TopoScout

About TopoScout

This tool helps you analyze terrain to find highest points, calculate maximum ascent, visualize slope steepness, and overlay GPX routes on the map. The app is designed to work on mobile devices as well.

GitHub Project / droidgren.github.io

Version: 2.22.0 (Build 3027)

Changelog

v2.22.0: Reverted the map engine to MapLibre GL JS 5.24.0, undoing the 6.x upgrade below. A WebGL2 browser is no longer required and the map renders again when opening the page straight from disk; the 6.3.0 slope-overlay and terrain-gesture fixes are given up in exchange.
v2.21.0: New Edit track mode — drag handles along a loaded GPX route to reshape it. Edits snap to real trails and roads via routing (running or MTB), with Undo/Redo and a freehand toggle. Routes that snap far from the track are rejected in favour of a straight line.
v2.20.0: The search box now understands DMS (57° 44' 24" N, 12° 06' 36" E), degrees + decimal minutes, decimal degrees written with a comma (57,811266 12,091825) and Plus Codes (R36R+GP4 Göteborg). Precise coordinates now zoom to level 15.
v2.19.2: Updated the map engine to MapLibre GL JS 6.3.0 — tilt/3D pan and zoom gestures no longer slip off the terrain point you grabbed, and the slope map overlay stops leaking video memory each time its opacity slider moves.
v2.19.1: Opening index.html directly from disk now shows a clear explanation instead of a blank page — the map engine needs the app to be served over http (installing the app still works fully offline).

Full changelog →

Advanced settings

Crosshair color: i Color of the crosshair marking the map's center. Choose one that stands out against your usual basemap. (Default: Black) Enable 3D exaggeration slider i Adds an on-map slider to exaggerate terrain height in 3D, making slopes look steeper or flatter. (Default: Disabled) Enable Hillshade opacity slider i Adds an on-map slider to set the strength (opacity) of the Hillshade relief shading. (Default: Disabled) Enable contour line layer i Draws topographic contour lines over the terrain, generated from the elevation data. (Default: Disabled) Enable contour labels i Labels the major contour lines with their elevation. Only applies when the contour layer is on. (Default: Enabled) Enable sync map with elevation profile i While viewing a GPX route's elevation profile, moves a marker along the map as you scrub the profile. (Default: Enabled) Enable tilt i Lets you tilt the map into a 3D view with a two-finger drag or the Tilt button. (Default: Enabled) Max tilt angle: i How far the map may tilt, from 0° (flat) to 85°. The Tilt and 3D buttons ease to this angle. (Default: 60°) 60° Overzoom i Lets you zoom in beyond the map tiles' native detail. Tiles are stretched, so they may look blurry. (Default: Disabled) Show crosshair i Shows a crosshair at the center of the map marking the exact point being measured. (Default: Enabled) Show zoom i Shows the current zoom level in the panel footer. (Default: Enabled) Show scale i Shows the current map scale (e.g. 1:50 000) in the panel footer. (Default: Disabled) Show center to GPS i Shows the distance from your GPS position to the map crosshair while GPS is on. (Default: Disabled) Show coordinates i Shows the coordinates of the map center in the panel footer. Tap to copy. (Default: Disabled)

Debug settings

Water analysis (filter water from results) i Filters out water bodies (lakes, sea) from the highest-points results, so peaks found on water are ignored. (Default: Disabled) Climb Step Res. (m): i Spacing between elevation samples taken along a climb. Smaller values are more precise but slower to compute. (Default: 10) Peak Min Dist. (px): i Minimum distance, in pixels, between two detected peaks. Larger values spread the highest points further apart. (Default: 40) Scan Angles: i Number of directions sampled around each point when measuring the steepest ascent. More angles are more accurate but slower. (Default: 32)

This application is fully client-side. No data saved on server.

About TopoScout

Enter API Key

Install TopoScout

Load GPX Route

Points of Interest

New POI

TopoScout