diff --git a/assets/question_catalog/definition.json b/assets/question_catalog/definition.json
index 08352d97..9112f0bb 100644
--- a/assets/question_catalog/definition.json
+++ b/assets/question_catalog/definition.json
@@ -9,21 +9,21 @@
          "input": [
             {
                "name": "@transportationModesBusOption",
-               "image": "assets/question_catalog/images/bus.jpg",
+               "image": "assets/question_catalog/images/bus.webp",
                "osm_tags": {
                   "bus": "yes"
                }
             },
             {
                "name": "@transportationModesTramOption",
-               "image": "assets/question_catalog/images/tram.jpg",
+               "image": "assets/question_catalog/images/tram.webp",
                "osm_tags": {
                   "tram": "yes"
                }
             },
             {
                "name": "@transportationModesTrainOptionName",
-               "image": "assets/question_catalog/images/train.jpg",
+               "image": "assets/question_catalog/images/train.webp",
                "description": "@transportationModesTrainOptionDescription",
                "osm_tags": {
                   "train": "yes"
@@ -31,7 +31,7 @@
             },
             {
                "name": "@transportationModesLightRailOptionName",
-               "image": "assets/question_catalog/images/lightrail.jpg",
+               "image": "assets/question_catalog/images/lightrail.webp",
                "description": "@transportationModesLightRailOptionDescription",
                "osm_tags": {
                   "light_rail": "yes"
@@ -39,14 +39,14 @@
             },
             {
                "name":"@transportationModesSubwayOption",
-               "image": "assets/question_catalog/images/subway.jpg",
+               "image": "assets/question_catalog/images/subway.webp",
                "osm_tags": {
                   "subway": "yes"
                }
             },
             {
                "name": "@transportationModesMonorailOptionName",
-               "image": "assets/question_catalog/images/monorail.jpg",
+               "image": "assets/question_catalog/images/monorail.webp",
                "description": "@transportationModesMonorailOptionDescription",
                "osm_tags": {
                   "monorail": "yes"
@@ -191,28 +191,28 @@
          "input": [
             {
                "name": "@parkingTypeGroundLevelOption",
-               "image": "assets/question_catalog/images/parking_surface.jpg",
+               "image": "assets/question_catalog/images/parking_surface.webp",
                "osm_tags": {
                   "parking": "surface"
                }
             },
             {
                "name": "@parkingTypeUndergroundOption",
-               "image": "assets/question_catalog/images/parking_underground.jpg",
+               "image": "assets/question_catalog/images/parking_underground.webp",
                "osm_tags": {
                   "parking": "underground"
                }
             },
             {
                "name": "@parkingTypeBayOption",
-               "image": "assets/question_catalog/images/parking_street_side.jpg",
+               "image": "assets/question_catalog/images/parking_street_side.webp",
                "osm_tags": {
                   "parking": "street_side"
                }
             },
             {
                "name": "@parkingTypeMultiStoreyOption",
-               "image": "assets/question_catalog/images/parking_multistorey.jpg",
+               "image": "assets/question_catalog/images/parking_multistorey.webp",
                "osm_tags": {
                   "parking": "multi-storey"
                }
@@ -238,10 +238,10 @@
          "name": "@disabledParkingName",
          "text": "@disabledParkingText",
          "image": [
-            "assets/question_catalog/images/traffic_sign_314_1044-10.png",
-            "assets/question_catalog/images/disabled_parking_1.jpg",
-            "assets/question_catalog/images/disabled_parking_2.jpg",
-            "assets/question_catalog/images/disabled_parking_3.jpg"
+            "assets/question_catalog/images/traffic_sign_314_1044-10.webp",
+            "assets/question_catalog/images/disabled_parking_1.webp",
+            "assets/question_catalog/images/disabled_parking_2.webp",
+            "assets/question_catalog/images/disabled_parking_3.webp"
          ]
       },
       "answer": {
@@ -311,8 +311,8 @@
          "text": "@parkAndRideText",
          "description": "@parkAndRideDescription",
          "image": [
-            "assets/question_catalog/images/traffic_sign_316.png",
-            "assets/question_catalog/images/park_and_ride.jpg"
+            "assets/question_catalog/images/traffic_sign_316.webp",
+            "assets/question_catalog/images/park_and_ride.webp"
          ]
       },
       "answer": {
@@ -383,7 +383,7 @@
          "name": "@toiletAccessibilityName",
          "text": "@toiletAccessibilityText",
          "image": [
-            "assets/question_catalog/images/toilet_house.jpg"
+            "assets/question_catalog/images/toilet_house.webp"
          ]
       },
       "answer": {
@@ -463,8 +463,8 @@
          "name": "@stopSeatsName",
          "text": "@stopSeatsText",
          "image": [
-            "assets/question_catalog/images/platform_shelter_1.jpg",
-            "assets/question_catalog/images/platform_shelter_2.jpg"]
+            "assets/question_catalog/images/platform_shelter_1.webp",
+            "assets/question_catalog/images/platform_shelter_2.webp"]
       },
       "answer": {
          "type": "Bool",
@@ -502,8 +502,8 @@
          "name": "@stopCoveredAreaName",
          "text": "@stopCoveredAreaText",
          "image": [
-            "assets/question_catalog/images/platform_shelter_1.jpg",
-            "assets/question_catalog/images/platform_shelter_2.jpg"
+            "assets/question_catalog/images/platform_shelter_1.webp",
+            "assets/question_catalog/images/platform_shelter_2.webp"
          ]
       },
       "answer": {
@@ -551,14 +551,14 @@
          "input": [
             {
                "name": "@timetableDisplayDynamicOption",
-               "image": "assets/question_catalog/images/station_departures_board_digital_1.jpg",
+               "image": "assets/question_catalog/images/station_departures_board_digital_1.webp",
                "osm_tags": {
                   "departures_board": "realtime"
                }
             },
             {
                "name": "@timetableDisplayStaticOption",
-               "image": "assets/question_catalog/images/station_departures_board_analog.jpg",
+               "image": "assets/question_catalog/images/station_departures_board_analog.webp",
                "osm_tags": {
                   "departures_board": "timetable"
                }
@@ -594,7 +594,7 @@
          "text": "@timetableDisplaySpeechOutputText",
          "description": "@timetableDisplaySpeechOutputDescription",
          "image": [
-            "assets/question_catalog/images/station_departures_board_digital_2.jpg"
+            "assets/question_catalog/images/station_departures_board_digital_2.webp"
          ]
       },
       "answer": {
@@ -631,9 +631,9 @@
          "text": "@passengerInformationDisplayText",
          "description": "@passengerInformationDisplayDescription",
          "image": [
-            "assets/question_catalog/images/platform_departures_board_1.jpg",
-            "assets/question_catalog/images/platform_departures_board_2.jpg",
-            "assets/question_catalog/images/platform_departures_board_3.jpg"
+            "assets/question_catalog/images/platform_departures_board_1.webp",
+            "assets/question_catalog/images/platform_departures_board_2.webp",
+            "assets/question_catalog/images/platform_departures_board_3.webp"
          ]
       },
       "answer": {
@@ -676,7 +676,7 @@
          "text": "@passengerInformationDisplaySpeechOutputText",
          "description": "@passengerInformationDisplaySpeechOutputDescription",
          "image": [
-            "assets/question_catalog/images/passenger_information_display_speech_output.jpg"
+            "assets/question_catalog/images/passenger_information_display_speech_output.webp"
          ]
       },
       "answer": {
@@ -717,7 +717,7 @@
          "text": "@passengerInformationDisplaySpeechOutputText",
          "description": "@passengerInformationDisplaySpeechOutputDescription",
          "image": [
-            "assets/question_catalog/images/passenger_information_display_speech_output.jpg"
+            "assets/question_catalog/images/passenger_information_display_speech_output.webp"
          ]
       },
       "answer": {
@@ -759,8 +759,8 @@
          "text": "@announcementsText",
          "description": "@announcementsDescription",
          "image": [
-            "assets/question_catalog/images/announcement_1.jpg",
-            "assets/question_catalog/images/announcement_2.jpg"
+            "assets/question_catalog/images/announcement_1.webp",
+            "assets/question_catalog/images/announcement_2.webp"
          ]
       },
       "answer": {
@@ -860,21 +860,21 @@
          "input": [
             {
                "name": "@stopCurbTypeRaisedOption",
-               "image": "assets/question_catalog/images/approach_aid_no.jpg",
+               "image": "assets/question_catalog/images/approach_aid_no.webp",
                "osm_tags": {
                   "kerb": "raised"
                }
             },
             {
                "name": "@stopCurbTypeLoweredOption",
-               "image": "assets/question_catalog/images/kerb_lowered.jpg",
+               "image": "assets/question_catalog/images/kerb_lowered.webp",
                "osm_tags": {
                   "kerb": "lowered"
                }
             },
             {
                "name": "@stopCurbTypeFlushOption",
-               "image": "assets/question_catalog/images/kerb_flush.jpg",
+               "image": "assets/question_catalog/images/kerb_flush.webp",
                "osm_tags": {
                   "kerb": "flush"
                }
@@ -903,7 +903,7 @@
          "text": "@platformWidthText",
          "description": "@platformWidthDescription",
          "image": [
-            "assets/question_catalog/images/platform_width.png"
+            "assets/question_catalog/images/platform_width.webp"
          ]
       },
       "answer": {
@@ -935,8 +935,8 @@
          "text": "@approachAidText",
          "description": "@approachAidDescription",
          "image": [
-            "assets/question_catalog/images/approach_aid_1.jpg",
-            "assets/question_catalog/images/approach_aid_2.jpg"
+            "assets/question_catalog/images/approach_aid_1.webp",
+            "assets/question_catalog/images/approach_aid_2.webp"
          ]
       },
       "answer": {
@@ -977,7 +977,7 @@
          "text": "@portableRampText",
          "description": "@portableRampDescription",
          "image": [
-            "assets/question_catalog/images/wheelchair_ramp_1.jpg"
+            "assets/question_catalog/images/wheelchair_ramp_1.webp"
          ]
       },
       "answer": {
@@ -1020,7 +1020,7 @@
          "text": "@portableRampLengthText",
          "description": "@portableRampLengthDescription",
          "image": [
-            "assets/question_catalog/images/wheelchair_ramp_length.png"
+            "assets/question_catalog/images/wheelchair_ramp_length.webp"
          ]
       },
       "answer": {
@@ -1057,7 +1057,7 @@
          "text": "@portableRampWidthText",
          "description": "@portableRampWidthDescription",
          "image": [
-            "assets/question_catalog/images/wheelchair_ramp_width.png"
+            "assets/question_catalog/images/wheelchair_ramp_width.webp"
          ]
       },
       "answer": {
@@ -1094,7 +1094,7 @@
          "text": "@portableRampLoadCapacityText",
          "description": "@portableRampLoadCapacityDescription",
          "image": [
-            "assets/question_catalog/images/wheelchair_ramp_1.jpg"
+            "assets/question_catalog/images/wheelchair_ramp_1.webp"
          ]
       },
       "answer": {
@@ -1125,8 +1125,8 @@
          "text": "@portableLiftText",
          "description": "@portableLiftDescription",
          "image": [
-            "assets/question_catalog/images/wheelchair_lift_1.jpg",
-            "assets/question_catalog/images/wheelchair_lift_2.jpg"
+            "assets/question_catalog/images/wheelchair_lift_1.webp",
+            "assets/question_catalog/images/wheelchair_lift_2.webp"
          ]
       },
       "answer": {
@@ -1168,8 +1168,8 @@
          "text": "@portableLiftLengthText",
          "description": "@portableLiftLengthDescription",
          "image": [
-            "assets/question_catalog/images/wheelchair_lift_1.jpg",
-            "assets/question_catalog/images/wheelchair_lift_2.jpg"
+            "assets/question_catalog/images/wheelchair_lift_1.webp",
+            "assets/question_catalog/images/wheelchair_lift_2.webp"
          ]
       },
       "answer": {
@@ -1207,8 +1207,8 @@
          "text": "@portableLiftLoadCapacityText",
          "description": "@portableLiftLoadCapacityDescription",
          "image": [
-            "assets/question_catalog/images/wheelchair_lift_1.jpg",
-            "assets/question_catalog/images/wheelchair_lift_2.jpg"
+            "assets/question_catalog/images/wheelchair_lift_1.webp",
+            "assets/question_catalog/images/wheelchair_lift_2.webp"
          ]
       },
       "answer": {
@@ -1317,28 +1317,28 @@
          "input": [
             {
                "name": "@doorTypeHingedOption",
-               "image": "assets/question_catalog/images/door_hinged.png",
+               "image": "assets/question_catalog/images/door_hinged.webp",
                "osm_tags": {
                   "door": "hinged"
                }
             },
             {
                "name": "@doorTypeSwingingOption",
-               "image": "assets/question_catalog/images/door_swinging.png",
+               "image": "assets/question_catalog/images/door_swinging.webp",
                "osm_tags": {
                   "door": "swinging"
                }
             },
             {
                "name": "@doorTypeSlidingOption",
-               "image": "assets/question_catalog/images/door_sliding.png",
+               "image": "assets/question_catalog/images/door_sliding.webp",
                "osm_tags": {
                   "door": "sliding"
                }
             },
             {
                "name": "@doorTypeRevolvingOption",
-               "image": "assets/question_catalog/images/door_revolving.png",
+               "image": "assets/question_catalog/images/door_revolving.webp",
                "osm_tags": {
                   "door": "revolving"
                }
@@ -1556,14 +1556,14 @@
          "input": [
             {
                "name": "@doorAutomatismTypeMotionDetectorOption",
-               "image": "assets/question_catalog/images/sliding_door_automatic.jpg",
+               "image": "assets/question_catalog/images/sliding_door_automatic.webp",
                "osm_tags": {
                   "automatic_door": "motion"
                }
             },
             {
                "name": "@doorAutomatismTypeButtonPressOption",
-               "image": "assets/question_catalog/images/automatic_door_button.jpg",
+               "image": "assets/question_catalog/images/automatic_door_button.webp",
                "osm_tags": {
                   "automatic_door": "button"
                }
@@ -1795,21 +1795,21 @@
          "input": [
             {
                "name": "@doorOpenNoOption",
-               "image": "assets/question_catalog/images/door_open_no.png",
+               "image": "assets/question_catalog/images/door_open_no.webp",
                "osm_tags": {
                   "open": "no"
                }
             },
             {
                "name": "@doorOpenPartialOption",
-               "image": "assets/question_catalog/images/door_open_partial.png",
+               "image": "assets/question_catalog/images/door_open_partial.webp",
                "osm_tags": {
                   "open": "partial"
                }
             },
             {
                "name": "@doorOpenFullOption",
-               "image": "assets/question_catalog/images/door_open_full.png",
+               "image": "assets/question_catalog/images/door_open_full.webp",
                "osm_tags": {
                   "open": "full"
                }
@@ -1933,14 +1933,14 @@
          "input": [
             {
                "name": "@waySegregatedYesOption",
-               "image": "assets/question_catalog/images/segregated_yes_sign_241-30.png",
+               "image": "assets/question_catalog/images/segregated_yes_sign_241-30.webp",
                "osm_tags": {
                   "segregated": "yes"
                }
             },
             {
                "name": "@waySegregatedNoOption",
-               "image": "assets/question_catalog/images/segregated_no_sign_240.png",
+               "image": "assets/question_catalog/images/segregated_no_sign_240.webp",
                "osm_tags": {
                   "segregated": "no"
                }
@@ -1977,14 +1977,14 @@
          "input": [
             {
                "name": "@surfacePavedOption",
-               "image": "assets/question_catalog/images/surface_paved.jpg",
+               "image": "assets/question_catalog/images/surface_paved.webp",
                "osm_tags": {
                   "surface": "paved"
                }
             },
             {
                "name": "@surfaceUnpavedOption",
-               "image": "assets/question_catalog/images/surface_unpaved.jpg",
+               "image": "assets/question_catalog/images/surface_unpaved.webp",
                "osm_tags": {
                   "surface": "unpaved"
                }
@@ -2052,14 +2052,14 @@
          "input": [
             {
                "name": "@surfacePavedOption",
-               "image": "assets/question_catalog/images/surface_paved.jpg",
+               "image": "assets/question_catalog/images/surface_paved.webp",
                "osm_tags": {
                   "footway:surface": "paved"
                }
             },
             {
                "name": "@surfaceUnpavedOption",
-               "image": "assets/question_catalog/images/surface_unpaved.jpg",
+               "image": "assets/question_catalog/images/surface_unpaved.webp",
                "osm_tags": {
                   "footway:surface": "unpaved"
                }
@@ -2096,14 +2096,14 @@
          "input": [
             {
                "name": "@surfacePavedOption",
-               "image": "assets/question_catalog/images/surface_paved.jpg",
+               "image": "assets/question_catalog/images/surface_paved.webp",
                "osm_tags": {
                   "cycleway:surface": "paved"
                }
             },
             {
                "name": "@surfaceUnpavedOption",
-               "image": "assets/question_catalog/images/surface_unpaved.jpg",
+               "image": "assets/question_catalog/images/surface_unpaved.webp",
                "osm_tags": {
                   "cycleway:surface": "unpaved"
                }
@@ -2171,8 +2171,8 @@
          "text": "@tactilePavingsStopText",
          "description": "@tactilePavingsStopDescription",
          "image": [
-            "assets/question_catalog/images/platform_tactile_paving_1.jpg",
-            "assets/question_catalog/images/tactile_paving_1.jpg"
+            "assets/question_catalog/images/platform_tactile_paving_1.webp",
+            "assets/question_catalog/images/tactile_paving_1.webp"
          ]
       },
       "answer": {
@@ -2216,28 +2216,28 @@
          "input": [
             {
                "name": "@cycleBarrierTypeSingleOption",
-               "image": "assets/question_catalog/images/cycle_barrier_single.png",
+               "image": "assets/question_catalog/images/cycle_barrier_single.webp",
                "osm_tags": {
                   "cycle_barrier": "single"
                }
             },
             {
                "name": "@cycleBarrierTypeDoubleOption",
-               "image": "assets/question_catalog/images/cycle_barrier_double.png",
+               "image": "assets/question_catalog/images/cycle_barrier_double.webp",
                "osm_tags": {
                   "cycle_barrier": "double"
                }
             },
             {
                "name": "@cycleBarrierTypeTripleOption",
-               "image": "assets/question_catalog/images/cycle_barrier_triple.png",
+               "image": "assets/question_catalog/images/cycle_barrier_triple.webp",
                "osm_tags": {
                   "cycle_barrier": "triple"
                }
             },
             {
                "name": "@cycleBarrierTypeDiagonalOption",
-               "image": "assets/question_catalog/images/cycle_barrier_diagonal.png",
+               "image": "assets/question_catalog/images/cycle_barrier_diagonal.webp",
                "osm_tags": {
                   "cycle_barrier": "diagonal"
                }
@@ -2259,7 +2259,7 @@
          "name": "@cycleBarrierWidthName",
          "text": "@cycleBarrierWidthText",
          "image": [
-            "assets/question_catalog/images/cycle_barrier_width.png"
+            "assets/question_catalog/images/cycle_barrier_width.webp"
          ],
          "description": "@cycleBarrierWidthDescription"
       },
@@ -2300,8 +2300,8 @@
          "name": "@cycleBarrierOpeningName",
          "text": "@cycleBarrierOpeningText",
          "image": [
-            "assets/question_catalog/images/cycle_barrier_double_opening.png",
-            "assets/question_catalog/images/cycle_barrier_triple_opening.png"
+            "assets/question_catalog/images/cycle_barrier_double_opening.webp",
+            "assets/question_catalog/images/cycle_barrier_triple_opening.webp"
          ],
          "description": "@cycleBarrierOpeningDescription"
       },
@@ -2342,8 +2342,8 @@
          "name": "@cycleBarrierSpacingName",
          "text": "@cycleBarrierSpacingText",
          "image": [
-            "assets/question_catalog/images/cycle_barrier_double_spacing.png",
-            "assets/question_catalog/images/cycle_barrier_triple_spacing.png"
+            "assets/question_catalog/images/cycle_barrier_double_spacing.webp",
+            "assets/question_catalog/images/cycle_barrier_triple_spacing.webp"
          ],
          "description": "@cycleBarrierSpacingDescription"
       },
@@ -2384,8 +2384,8 @@
          "name": "@stairLiftName",
          "text": "@stairLiftText",
          "image": [
-            "assets/question_catalog/images/stair_lift_1.jpg",
-            "assets/question_catalog/images/stair_lift_2.jpg"
+            "assets/question_catalog/images/stair_lift_1.webp",
+            "assets/question_catalog/images/stair_lift_2.webp"
          ]
       },
       "answer": {
@@ -2422,7 +2422,7 @@
          "name": "@stairLiftLengthName",
          "text": "@stairLiftLengthText",
          "image": [
-            "assets/question_catalog/images/stair_lift_length.png"
+            "assets/question_catalog/images/stair_lift_length.webp"
          ],
          "description": "@stairLiftLengthDescription"
       },
@@ -2461,7 +2461,7 @@
          "name": "@elevatorLengthName",
          "text": "@elevatorLengthText",
          "image": [
-            "assets/question_catalog/images/elevator_length.png"
+            "assets/question_catalog/images/elevator_length.webp"
          ],
          "description": "@elevatorLengthDescription"
       },
@@ -2502,7 +2502,7 @@
          "name": "@stairLiftWidthName",
          "text": "@stairLiftWidthText",
          "image": [
-            "assets/question_catalog/images/stair_lift_width.png"
+            "assets/question_catalog/images/stair_lift_width.webp"
          ],
          "description": "@stairLiftWidthDescription"
       },
@@ -2541,7 +2541,7 @@
          "name": "@elevatorWidthName",
          "text": "@elevatorWidthText",
          "image": [
-            "assets/question_catalog/images/elevator_width.png"
+            "assets/question_catalog/images/elevator_width.webp"
          ],
          "description": "@elevatorWidthDescription"
       },
@@ -2582,7 +2582,7 @@
          "name": "@elevatorHeightName",
          "text": "@elevatorHeightText",
          "image": [
-            "assets/question_catalog/images/elevator_height.png"
+            "assets/question_catalog/images/elevator_height.webp"
          ]
       },
       "answer": {
@@ -2655,7 +2655,7 @@
          "name": "@elevatorDoorWidthName",
          "text": "@elevatorDoorWidthText",
          "image": [
-            "assets/question_catalog/images/elevator_door_width.png"
+            "assets/question_catalog/images/elevator_door_width.webp"
          ],
          "description": "@elevatorDoorWidthDescription"
       },
@@ -2715,7 +2715,7 @@
          "name": "@elevatorDoorHeightName",
          "text": "@elevatorDoorHeightText",
          "image": [
-            "assets/question_catalog/images/elevator_door_height.png"
+            "assets/question_catalog/images/elevator_door_height.webp"
          ],
          "description": "@elevatorDoorHeightDescription"
       },
@@ -2775,7 +2775,7 @@
          "name": "@elevatorTactileWritingName",
          "text": "@elevatorTactileWritingText",
          "image": [
-            "assets/question_catalog/images/lift_buttons_tactile_writing.jpg"
+            "assets/question_catalog/images/lift_buttons_tactile_writing.webp"
          ],
          "description": "@elevatorTactileWritingDescription"
       },
@@ -2913,28 +2913,28 @@
          "input": [
             {
                "name": "@stairsTactilePavingBothOption",
-               "image": "assets/question_catalog/images/steps_tactile_paving_yes.jpg",
+               "image": "assets/question_catalog/images/steps_tactile_paving_yes.webp",
                "osm_tags": {
                   "tactile_paving": "yes"
                }
             },
             {
                "name": "@stairsTactilePavingTopOption",
-               "image": "assets/question_catalog/images/steps_tactile_paving_partial.jpg",
+               "image": "assets/question_catalog/images/steps_tactile_paving_partial.webp",
                "osm_tags": {
                   "tactile_paving": "partial"
                }
             },
             {
                "name": "@stairsTactilePavingBottomOption",
-               "image": "assets/question_catalog/images/steps_tactile_paving_incorrect.jpg",
+               "image": "assets/question_catalog/images/steps_tactile_paving_incorrect.webp",
                "osm_tags": {
                   "tactile_paving": "incorrect"
                }
             },
             {
                "name": "@stairsTactilePavingNoOption",
-               "image": "assets/question_catalog/images/steps_tactile_paving_no.jpg",
+               "image": "assets/question_catalog/images/steps_tactile_paving_no.webp",
                "osm_tags": {
                   "tactile_paving": "no"
                }
@@ -2957,8 +2957,8 @@
          "name": "@handrailTactileWritingName",
          "text": "@handrailTactileWritingText",
          "image": [
-            "assets/question_catalog/images/handrail_tactile_writing_1.jpg",
-            "assets/question_catalog/images/handrail_tactile_writing_2.jpg"
+            "assets/question_catalog/images/handrail_tactile_writing_1.webp",
+            "assets/question_catalog/images/handrail_tactile_writing_2.webp"
          ],
          "description": "@handrailTactileWritingDescription"
       },
@@ -2993,8 +2993,8 @@
          "name": "@stairsHandrailName",
          "text": "@stairsHandrailText",
          "image": [
-            "assets/question_catalog/images/handrail_1.jpg",
-            "assets/question_catalog/images/handrail_2.jpg"
+            "assets/question_catalog/images/handrail_1.webp",
+            "assets/question_catalog/images/handrail_2.webp"
          ]
       },
       "answer": {
@@ -3081,14 +3081,14 @@
          "input": [
             {
                "name": "@crossingMarkingsSharedOption",
-               "image": "assets/question_catalog/images/crossing_markings_shared.png",
+               "image": "assets/question_catalog/images/crossing_markings_shared.webp",
                "osm_tags": {
                   "crossing:markings": "yes"
                }
             },
             {
                "name": "@crossingMarkingsSeparateOption",
-               "image": "assets/question_catalog/images/crossing_markings_separate.png",
+               "image": "assets/question_catalog/images/crossing_markings_separate.webp",
                "osm_tags": {
                   "footway:crossing:markings": "yes",
                   "cycleway:crossing:markings": "yes"
@@ -3096,7 +3096,7 @@
             },
             {
                "name": "@crossingMarkingsFootwayOption",
-               "image": "assets/question_catalog/images/crossing_markings_foot.png",
+               "image": "assets/question_catalog/images/crossing_markings_foot.webp",
                "osm_tags": {
                   "footway:crossing:markings": "yes",
                   "cycleway:crossing:markings": "no"
@@ -3104,7 +3104,7 @@
             },
             {
                "name": "@crossingMarkingsCyclewayOption",
-               "image": "assets/question_catalog/images/crossing_markings_cycle.png",
+               "image": "assets/question_catalog/images/crossing_markings_cycle.webp",
                "osm_tags": {
                   "footway:crossing:markings": "no",
                   "cycleway:crossing:markings": "yes"
@@ -3112,7 +3112,7 @@
             },
             {
                "name": "@crossingMarkingsNoneOption",
-               "image": "assets/question_catalog/images/crossing_markings_none.png",
+               "image": "assets/question_catalog/images/crossing_markings_none.webp",
                "osm_tags": {
                   "crossing:markings": "no"
                }
@@ -3516,49 +3516,49 @@
          "input": [
             {
                "name": "@crossingMarkingsTypeZebraOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_zebra.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_zebra.webp",
                "osm_tags": {
                   "crossing:markings": "zebra"
                }
             },
             {
                "name": "@crossingMarkingsTypeLinesOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_lines.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_lines.webp",
                "osm_tags": {
                   "crossing:markings": "lines"
                }
             },
             {
                "name": "@crossingMarkingsTypeLadderOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_ladder.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_ladder.webp",
                "osm_tags": {
                   "crossing:markings": "ladder"
                }
             },
             {
                "name": "@crossingMarkingsTypeDashesOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_dashes.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_dashes.webp",
                "osm_tags": {
                   "crossing:markings": "dashes"
                }
             },
             {
                "name": "@crossingMarkingsTypeDotsOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_dots.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_dots.webp",
                "osm_tags": {
                   "crossing:markings": "dots"
                }
             },
             {
                "name": "@crossingMarkingsTypeSurfaceOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_surface.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_surface.webp",
                "osm_tags": {
                   "crossing:markings": "surface"
                }
             },
             {
                "name": "@crossingMarkingsTypePictogramsOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_pictograms.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_pictograms.webp",
                "osm_tags": {
                   "crossing:markings": "pictograms"
                }
@@ -3619,49 +3619,49 @@
          "input": [
             {
                "name": "@crossingMarkingsTypeZebraOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_zebra.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_zebra.webp",
                "osm_tags": {
                   "cycleway:crossing:markings": "zebra"
                }
             },
             {
                "name": "@crossingMarkingsTypeLinesOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_lines.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_lines.webp",
                "osm_tags": {
                   "cycleway:crossing:markings": "lines"
                }
             },
             {
                "name": "@crossingMarkingsTypeLadderOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_ladder.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_ladder.webp",
                "osm_tags": {
                   "cycleway:crossing:markings": "ladder"
                }
             },
             {
                "name": "@crossingMarkingsTypeDashesOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_dashes.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_dashes.webp",
                "osm_tags": {
                   "cycleway:crossing:markings": "dashes"
                }
             },
             {
                "name": "@crossingMarkingsTypeDotsOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_dots.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_dots.webp",
                "osm_tags": {
                   "cycleway:crossing:markings": "dots"
                }
             },
             {
                "name": "@crossingMarkingsTypeSurfaceOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_surface.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_surface.webp",
                "osm_tags": {
                   "cycleway:crossing:markings": "surface"
                }
             },
             {
                "name": "@crossingMarkingsTypePictogramsOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_pictograms.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_pictograms.webp",
                "osm_tags": {
                   "cycleway:crossing:markings": "pictograms"
                }
@@ -3705,49 +3705,49 @@
          "input": [
             {
                "name": "@crossingMarkingsTypeZebraOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_zebra.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_zebra.webp",
                "osm_tags": {
                   "footway:crossing:markings": "zebra"
                }
             },
             {
                "name": "@crossingMarkingsTypeLinesOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_lines.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_lines.webp",
                "osm_tags": {
                   "footway:crossing:markings": "lines"
                }
             },
             {
                "name": "@crossingMarkingsTypeLadderOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_ladder.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_ladder.webp",
                "osm_tags": {
                   "footway:crossing:markings": "ladder"
                }
             },
             {
                "name": "@crossingMarkingsTypeDashesOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_dashes.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_dashes.webp",
                "osm_tags": {
                   "footway:crossing:markings": "dashes"
                }
             },
             {
                "name": "@crossingMarkingsTypeDotsOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_dots.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_dots.webp",
                "osm_tags": {
                   "footway:crossing:markings": "dots"
                }
             },
             {
                "name": "@crossingMarkingsTypeSurfaceOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_surface.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_surface.webp",
                "osm_tags": {
                   "footway:crossing:markings": "surface"
                }
             },
             {
                "name": "@crossingMarkingsTypePictogramsOption",
-               "image": "assets/question_catalog/images/crossing_markings_type_pictograms.png",
+               "image": "assets/question_catalog/images/crossing_markings_type_pictograms.webp",
                "osm_tags": {
                   "footway:crossing:markings": "pictograms"
                }
@@ -3867,8 +3867,8 @@
          "text": "@pedestrianLightsButtonText",
          "description": "@pedestrianLightsButtonDescription",
          "image": [
-            "assets/question_catalog/images/traffic_signals_pushbutton_1.jpg",
-            "assets/question_catalog/images/traffic_signals_pushbutton_2.jpg"
+            "assets/question_catalog/images/traffic_signals_pushbutton_1.webp",
+            "assets/question_catalog/images/traffic_signals_pushbutton_2.webp"
          ]
       },
       "answer": {
@@ -3927,7 +3927,7 @@
          "text": "@pedestrianLightsTactileArrowText",
         "description": "@pedestrianLightsTactileArrowDescription",
         "image": [
-            "assets/question_catalog/images/traffic_signals_arrow.jpg"
+            "assets/question_catalog/images/traffic_signals_arrow.webp"
          ]
       },
       "answer": {
@@ -3986,9 +3986,9 @@
          "text": "@pedestrianLightsAcousticSignalText",
          "description": "@pedestrianLightsAcousticSignalDescription",
          "image": [
-            "assets/question_catalog/images/traffic_signals_blind.jpg",
-            "assets/question_catalog/images/traffic_signals_blind_pushbutton_1.jpg",
-            "assets/question_catalog/images/traffic_signals_blind_pushbutton_2.jpg"
+            "assets/question_catalog/images/traffic_signals_blind.webp",
+            "assets/question_catalog/images/traffic_signals_blind_pushbutton_1.webp",
+            "assets/question_catalog/images/traffic_signals_blind_pushbutton_2.webp"
          ]
       },
       "answer": {
@@ -4051,8 +4051,8 @@
          "text": "@pedestrianLightsVibrationSignalText",
          "description": "@pedestrianLightsVibrationSignalDescription",
          "image": [
-            "assets/question_catalog/images/traffic_signals_blind_pushbutton_1.jpg",
-            "assets/question_catalog/images/traffic_signals_blind_pushbutton_2.jpg"
+            "assets/question_catalog/images/traffic_signals_blind_pushbutton_1.webp",
+            "assets/question_catalog/images/traffic_signals_blind_pushbutton_2.webp"
          ]
       },
       "answer": {
@@ -4116,7 +4116,7 @@
             {
                "name": "@tramCrossingSignalLightsStopOption",
                "description": "@tramCrossingSignalLightsStopOptionDescription",
-               "image": "assets/question_catalog/images/tram_signal_lights_stop.png",
+               "image": "assets/question_catalog/images/tram_signal_lights_stop.webp",
                "osm_tags": {
                   "crossing:signals": "yes",
                   "crossing:light": "no"
@@ -4125,7 +4125,7 @@
             {
                "name": "@tramCrossingSignalLightsWarningOption",
                "description": "@tramCrossingSignalLightsWarningOptionDescription",
-               "image": "assets/question_catalog/images/tram_signal_lights_warning.png",
+               "image": "assets/question_catalog/images/tram_signal_lights_warning.webp",
                "osm_tags": {
                   "crossing:signals": "no",
                   "crossing:light": "yes"
@@ -4161,21 +4161,21 @@
          "input": [
             {
                "name": "@curbTypeRaisedOption",
-               "image": "assets/question_catalog/images/approach_aid_no.jpg",
+               "image": "assets/question_catalog/images/approach_aid_no.webp",
                "osm_tags": {
                   "kerb": "raised"
                }
             },
             {
                "name": "@curbTypeLoweredOption",
-               "image": "assets/question_catalog/images/kerb_lowered.jpg",
+               "image": "assets/question_catalog/images/kerb_lowered.webp",
                "osm_tags": {
                   "kerb": "lowered"
                }
             },
             {
                "name": "@curbTypeFlush",
-               "image": "assets/question_catalog/images/kerb_flush.jpg",
+               "image": "assets/question_catalog/images/kerb_flush.webp",
                "osm_tags": {
                   "kerb": "flush"
                }
@@ -4198,7 +4198,7 @@
          "text": "@tactilePavingText",
          "description": "@tactilePavingDescription",
          "image": [
-            "assets/question_catalog/images/tactile_paving_on_kerb.jpg"
+            "assets/question_catalog/images/tactile_paving_on_kerb.webp"
          ]
       },
       "answer": {
@@ -4236,7 +4236,7 @@
          "input": [
             {
                "name": "@crossingBarrierOption",
-               "image": "assets/question_catalog/images/crossing_barrier_full.png",
+               "image": "assets/question_catalog/images/crossing_barrier_full.webp",
                "osm_tags": {
                   "crossing:barrier": "full",
                   "crossing:chicane": "no"
@@ -4244,7 +4244,7 @@
             },
             {
                "name": "@crossingBarrierChicaneOption",
-               "image": "assets/question_catalog/images/crossing_chicane.png",
+               "image": "assets/question_catalog/images/crossing_chicane.webp",
                "osm_tags": {
                   "crossing:chicane": "yes",
                   "crossing:barrier": "no"
@@ -4252,7 +4252,7 @@
             },
             {
                "name": "@crossingBarrierGateOption",
-               "image": "assets/question_catalog/images/crossing_barrier_gate.png",
+               "image": "assets/question_catalog/images/crossing_barrier_gate.webp",
                "osm_tags": {
                   "crossing:barrier": "gate",
                   "crossing:chicane": "no"
@@ -4260,7 +4260,7 @@
             },
             {
                "name": "@crossingBarrierChainOption",
-               "image": "assets/question_catalog/images/crossing_barrier_chain.png",
+               "image": "assets/question_catalog/images/crossing_barrier_chain.webp",
                "osm_tags": {
                   "crossing:barrier": "chain",
                   "crossing:chicane": "no"
@@ -4268,7 +4268,7 @@
             },
             {
                "name": "@crossingBarrierUnsecuredOption",
-               "image": "assets/question_catalog/images/crossing_barrier_no.png",
+               "image": "assets/question_catalog/images/crossing_barrier_no.webp",
                "osm_tags": {
                   "crossing:barrier": "no",
                   "crossing:chicane": "no"
@@ -4297,28 +4297,28 @@
          "input": [
             {
                "name": "@crossingBarrierOption",
-               "image": "assets/question_catalog/images/crossing_barrier_full.png",
+               "image": "assets/question_catalog/images/crossing_barrier_full.webp",
                "osm_tags": {
                   "crossing:barrier": "full"
                }
             },
             {
                "name": "@crossingBarrierGateOption",
-               "image": "assets/question_catalog/images/crossing_barrier_gate.png",
+               "image": "assets/question_catalog/images/crossing_barrier_gate.webp",
                "osm_tags": {
                   "crossing:barrier": "gate"
                }
             },
             {
                "name": "@crossingBarrierChainOption",
-               "image": "assets/question_catalog/images/crossing_barrier_chain.png",
+               "image": "assets/question_catalog/images/crossing_barrier_chain.webp",
                "osm_tags": {
                   "crossing:barrier": "chain"
                }
             },
             {
                "name": "@crossingBarrierUnsecuredOption",
-               "image": "assets/question_catalog/images/crossing_barrier_no.png",
+               "image": "assets/question_catalog/images/crossing_barrier_no.webp",
                "osm_tags": {
                   "crossing:barrier": "no"
                }
@@ -4341,7 +4341,7 @@
          "name": "@railroadChicaneName",
          "text": "@railroadChicaneText",
          "image": [
-            "assets/question_catalog/images/crossing_chicane.png"
+            "assets/question_catalog/images/crossing_chicane.webp"
          ]
       },
       "answer": {
@@ -4472,8 +4472,8 @@
          "text": "@crossingGroundIndicatorText",
          "description": "@crossingGroundIndicatorDescription",
          "image": [
-            "assets/question_catalog/images/crossing_tram.jpg",
-            "assets/question_catalog/images/crossing_rail.jpg"
+            "assets/question_catalog/images/crossing_tram.webp",
+            "assets/question_catalog/images/crossing_rail.webp"
          ]
       },
       "answer": {
diff --git a/assets/question_catalog/images/announcement_1.jpg b/assets/question_catalog/images/announcement_1.jpg
deleted file mode 100644
index 38a67717..00000000
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diff --git a/assets/question_catalog/images/announcement_1.webp b/assets/question_catalog/images/announcement_1.webp
new file mode 100644
index 00000000..7881f410
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diff --git a/assets/question_catalog/images/announcement_2.jpg b/assets/question_catalog/images/announcement_2.jpg
deleted file mode 100644
index 3af51eb0..00000000
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diff --git a/assets/question_catalog/images/announcement_2.webp b/assets/question_catalog/images/announcement_2.webp
new file mode 100644
index 00000000..0f768f20
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diff --git a/assets/question_catalog/images/approach_aid_1.jpg b/assets/question_catalog/images/approach_aid_1.jpg
deleted file mode 100644
index 6fdea44e..00000000
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diff --git a/assets/question_catalog/images/approach_aid_1.webp b/assets/question_catalog/images/approach_aid_1.webp
new file mode 100644
index 00000000..d2184865
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diff --git a/assets/question_catalog/images/approach_aid_2.jpg b/assets/question_catalog/images/approach_aid_2.jpg
deleted file mode 100644
index 1fe8b802..00000000
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diff --git a/assets/question_catalog/images/approach_aid_2.webp b/assets/question_catalog/images/approach_aid_2.webp
new file mode 100644
index 00000000..df972f51
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diff --git a/assets/question_catalog/images/approach_aid_no.jpg b/assets/question_catalog/images/approach_aid_no.jpg
deleted file mode 100644
index ddeb3861..00000000
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diff --git a/assets/question_catalog/images/approach_aid_no.webp b/assets/question_catalog/images/approach_aid_no.webp
new file mode 100644
index 00000000..d3262493
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diff --git a/assets/question_catalog/images/automatic_door_button.jpg b/assets/question_catalog/images/automatic_door_button.jpg
deleted file mode 100644
index d89b536f..00000000
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diff --git a/assets/question_catalog/images/automatic_door_button.webp b/assets/question_catalog/images/automatic_door_button.webp
new file mode 100644
index 00000000..97f06d22
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diff --git a/assets/question_catalog/images/bus.jpg b/assets/question_catalog/images/bus.jpg
deleted file mode 100644
index ce153ae1..00000000
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diff --git a/assets/question_catalog/images/bus.webp b/assets/question_catalog/images/bus.webp
new file mode 100644
index 00000000..d69735cf
Binary files /dev/null and b/assets/question_catalog/images/bus.webp differ
diff --git a/assets/question_catalog/images/crossing_barrier_chain.png b/assets/question_catalog/images/crossing_barrier_chain.png
deleted file mode 100644
index 228ea83e..00000000
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new file mode 100644
index 00000000..a63b4c60
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diff --git a/assets/question_catalog/images/crossing_barrier_full.png b/assets/question_catalog/images/crossing_barrier_full.png
deleted file mode 100644
index c4f0699c..00000000
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index 00000000..a393fce8
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deleted file mode 100644
index 6012d3c4..00000000
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index 00000000..f9ffc34b
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