diff --git a/website/src/locales/cs.json b/website/src/locales/cs.json
index 683cb66b..9264e02d 100644
--- a/website/src/locales/cs.json
+++ b/website/src/locales/cs.json
@@ -134,7 +134,7 @@
                 "mud": "Bláto",
                 "sand": "Písek",
                 "woodchips": "Dřevěné štěpky",
-                "grass": "Grass",
+                "grass": "Tráva",
                 "grass_paver": "Grass paver"
             },
             "error": {
@@ -153,9 +153,9 @@
         },
         "time": {
             "tooltip": "Manage time data",
-            "start": "Start",
+            "start": "Začátek",
             "end": "End",
-            "total_time": "Moving time",
+            "total_time": "Doba v pohybu",
             "pick_date": "Pick a date",
             "artificial": "Create realistic time data",
             "update": "Update time data",
@@ -165,7 +165,7 @@
         "merge": {
             "merge_traces": "Connect the traces",
             "merge_contents": "Merge the contents and keep the traces disconnected",
-            "merge_selection": "Merge selection",
+            "merge_selection": "Sloučit výběr",
             "tooltip": "Merge file items together",
             "help_merge_traces": "Connecting the selected traces will create a single file containing a single continuous trace.",
             "help_cannot_merge_traces": "Your selection needs to contain several traces to connect them.",
@@ -201,7 +201,7 @@
             "delete_waypoints": "Delete points of interest",
             "delete_inside": "Delete inside selection",
             "delete_outside": "Delete outside selection",
-            "button": "Delete",
+            "button": "Smazat",
             "help": "Select a rectangle area on the map to remove GPS points and points of interest.",
             "help_no_selection": "Select a trace to clean GPS points and points of interest."
         }
@@ -217,31 +217,31 @@
             "urls": "URL(s)",
             "url_placeholder": "WMTS, WMS or Mapbox style JSON",
             "max_zoom": "Max zoom",
-            "layer_type": "Layer type",
-            "basemap": "Basemap",
-            "overlay": "Overlay",
+            "layer_type": "Typ vrstvy",
+            "basemap": "Základní mapa",
+            "overlay": "Překrytí",
             "create": "Create layer",
             "update": "Update layer"
         },
         "opacity": "Overlay opacity",
         "heatmap": "Strava Heatmap",
         "label": {
-            "basemaps": "Basemaps",
-            "overlays": "Overlays",
-            "custom": "Custom",
-            "world": "World",
-            "countries": "Countries",
+            "basemaps": "Základní mapy",
+            "overlays": "Překrytí",
+            "custom": "Vlastní",
+            "world": "Svět",
+            "countries": "Státy",
             "belgium": "Belgium",
-            "bulgaria": "Bulgaria",
-            "finland": "Finland",
-            "france": "France",
-            "new_zealand": "New Zealand",
-            "norway": "Norway",
-            "spain": "Spain",
-            "sweden": "Sweden",
-            "switzerland": "Switzerland",
-            "united_kingdom": "United Kingdom",
-            "united_states": "United States",
+            "bulgaria": "Bulharsko",
+            "finland": "Finsko",
+            "france": "Francie",
+            "new_zealand": "Nový Zéland",
+            "norway": "Norsko",
+            "spain": "Španělsko",
+            "sweden": "Švédsko",
+            "switzerland": "Švýcarsko",
+            "united_kingdom": "Velká Británie",
+            "united_states": "Spojené státy",
             "mapboxOutdoors": "Mapbox Outdoors",
             "mapboxSatellite": "Mapbox Satellite",
             "openStreetMap": "OpenStreetMap",
@@ -283,7 +283,7 @@
             "stravaHeatmapRide": "Cycling",
             "stravaHeatmapGravel": "Gravel Cycling",
             "stravaHeatmapMTB": "MTB",
-            "stravaHeatmapWater": "Water",
+            "stravaHeatmapWater": "Voda",
             "stravaHeatmapWinter": "Winter",
             "waymarked_trails": "Waymarked Trails",
             "waymarkedTrailsHiking": "Hiking",
@@ -294,43 +294,43 @@
             "waymarkedTrailsWinter": "Winter",
             "points_of_interest": "Points of interest",
             "food": "Food",
-            "bakery": "Bakery",
+            "bakery": "Pekařství",
             "food-store": "Food Store",
-            "eat-and-drink": "Eat and Drink",
-            "amenities": "Amenities",
-            "toilets": "Toilets",
-            "water": "Water",
-            "shower": "Shower",
+            "eat-and-drink": "Jídlo a pití",
+            "amenities": "Vybavení",
+            "toilets": "Toalety",
+            "water": "Voda",
+            "shower": "Sprcha",
             "motorized": "Cars and Motorcycles",
-            "fuel-station": "Fuel Station",
-            "parking": "Parking",
+            "fuel-station": "Čerpací stanice",
+            "parking": "Parkoviště",
             "garage": "Garage",
-            "barrier": "Barrier",
-            "tourism": "Tourism",
-            "attraction": "Attraction",
-            "viewpoint": "Viewpoint",
+            "barrier": "Zábrana",
+            "tourism": "Cestovní ruch",
+            "attraction": "Atrakce",
+            "viewpoint": "Vyhlídka",
             "hotel": "Hotel",
-            "campsite": "Campsite",
+            "campsite": "Stanový kemp",
             "hut": "Hut",
             "summit": "Summit",
             "pass": "Pass",
             "climbing": "Climbing",
-            "bicycle": "Bicycle",
-            "bicycle-parking": "Bicycle Parking",
-            "bicycle-rental": "Bicycle Rental",
-            "bicycle-shop": "Bicycle Shop",
-            "public-transport": "Public Transport",
-            "railway-station": "Railway Station",
-            "tram-stop": "Tram Stop",
-            "bus-stop": "Bus Stop",
+            "bicycle": "Jízdní kolo",
+            "bicycle-parking": "Parkoviště pro kola",
+            "bicycle-rental": "Půjčovna jízdních kol",
+            "bicycle-shop": "Prodejna jízdních kol",
+            "public-transport": "Veřejná doprava",
+            "railway-station": "Železniční stanice",
+            "tram-stop": "Zastávka tramvaje",
+            "bus-stop": "Autobusová zastávka",
             "ferry": "Ferry"
         },
         "color": {
-            "blue": "Blue",
+            "blue": "Modrá",
             "bluered": "Blue Red",
-            "gray": "Gray",
-            "hot": "Hot",
-            "purple": "Purple",
+            "gray": "Šedá",
+            "hot": "Horké",
+            "purple": "Fialová",
             "orange": "Orange"
         }
     },
@@ -345,25 +345,25 @@
         "show_power": "Show power data"
     },
     "quantities": {
-        "distance": "Distance",
-        "elevation": "Elevation",
+        "distance": "Vzdálenost",
+        "elevation": "Nadmořská výška",
         "temperature": "Temperature",
-        "speed": "Speed",
-        "pace": "Pace",
+        "speed": "Rychlost",
+        "pace": "Tempo",
         "heartrate": "Heart rate",
         "cadence": "Cadence",
         "power": "Power",
-        "slope": "Slope",
-        "surface": "Surface",
+        "slope": "Sklon",
+        "surface": "Povrch",
         "time": "Time",
         "moving": "Moving",
-        "total": "Total"
+        "total": "Celkem"
     },
     "units": {
         "meters": "m",
-        "feet": "ft",
+        "feet": "stop",
         "kilometers": "km",
-        "miles": "mi",
+        "miles": "mil",
         "celsius": "°C",
         "fahrenheit": "°F",
         "kilometers_per_hour": "km/h",
@@ -377,8 +377,8 @@
     "gpx": {
         "file": "File",
         "files": "Files",
-        "track": "Track",
-        "tracks": "Tracks",
+        "track": "Stopa",
+        "tracks": "Stopy",
         "segment": "Segment",
         "segments": "Segments",
         "waypoint": "Point of interest",
@@ -411,8 +411,8 @@
     "embedding": {
         "title": "Create your own map",
         "mapbox_token": "Mapbox access token",
-        "file_urls": "File URLs (separated by commas)",
-        "basemap": "Basemap",
+        "file_urls": "URL souborů (oddělené čárkami)",
+        "basemap": "Základní mapa",
         "height": "Height",
         "fill_by": "Fill by",
         "none": "None",
@@ -424,7 +424,7 @@
         "zoom": "Zoom",
         "pitch": "Pitch",
         "bearing": "Bearing",
-        "preview": "Preview",
+        "preview": "Náhled",
         "code": "Integration code"
     },
     "webgl2_required": "WebGL 2 is required to display the map.",