Terrain Viewer
Features

Walkthrough

Every step of the in-app guided tour (Coachmark) — intro, Terrain deep dive, Historical Imagery deep dive

The app ships a guided tour (Coachmark) that auto-starts on first visit, or any time from Settings → Take the Tour. It's five shared intro steps, then a fork — go deeper on Terrain visualization tools, or jump into Historical Imagery. This page walks through every step of both branches as a screenshot gallery; the in-app tour itself is generally the faster way to get oriented — open the app with the tour running ↗ (or click any thumbnail below to zoom in, then arrow-key through the rest).

Intro (shared)

Step 1 of 6, The Map Viewport — full-screen spotlight over a tilted Hillshade render, Matterhorn massif
Step 1 of 6, The Map Viewport — full-screen spotlight over a tilted Hillshade render, Matterhorn massifStep 2 of 6, The Control Panel — spotlighting the full sidebarStep 3 of 6, General Settings — View Mode, Split Mode, Project import/export, Terrain ExaggerationStep 4 of 6, Terrain vs Historical Satellite Modes — explaining the mode switchStep 5 of 6, Everything is Saved — URL state, local storage persistence, Download and SnapshotStep 6 of 6, Where to next — the branch choice between Terrain Tools and Historical Imagery

Terrain Tools branch

Step 7 of 19, Visualization Modes — each checkbox is one layer, with its own opacity slider
Step 7 of 19, Visualization Modes — each checkbox is one layer, with its own opacity sliderStep 8 of 19, Data Layers — every visualization mode as a card with a thumbnail; click a card to turn it onStep 9 of 19, Hillshade — method selector and light-direction padStep 10 of 19, Color by Elevation (Hypsometric) — color ramps and min/max rangeStep 11 of 19, Terrain Analysis — surface derivatives, neighborhood statistics, principal componentsStep 12 of 19, Relief Visualization — LRM, Sky View Factor, Openness, Local DominanceStep 13 of 19, Terrain Sources — the elevation (DEM) pickerStep 14 of 19, Raster Basemap — satellite/aerial imagery draped over terrainStep 15 of 19, Bring Your Own Data — Add Dataset, Batch Edit, Sample sourcesStep 16 of 19, Split / Compare Mode — Off, Overlay, SideStep 17 of 19, Modes per View — a 2x2 grid with imagery, contours, slope and matcap on different views, the sync toggle offStep 18 of 19, Tools — Drawing, Elevation Picker, Sun/Shadow Calculator, Animation, Source InfoStep 19 of 19, Keyboard Shortcuts — the Terrain-branch wrap-up

Historical Imagery branch

Step 7 of 12, Compare and Blend — Historical mode's split/grid/blend home
Step 7 of 12, Compare and Blend — Historical mode's split/grid/blend homeStep 8 of 12, Overlay Blend Modes — Multiply, Difference, ScreenStep 9 of 12, Split Side Grid Layout — up to 4x2 panes with colored bordersStep 10 of 12, Match Colors — histogram matching onto reference view AStep 11 of 12, Historical Imagery Timeline — ESRI Wayback, Google Earth Historical, Bing, Planet, NASA HLS, EOX Sentinel-2 in one scrubbable timelineStep 12 of 12, Tools — the Historical-branch wrap-up: Drawing, Sun/Shadow Calculator, Source Info

Feature Overview

Every feature of the free browser terrain viewer, section by section: hillshade and lighting, slope and terrain analysis, contours, hypsometric tint, 3D and globe, split views, historical imagery, national LiDAR, your own COGs, export and share.

Visualization Modes

Each visualization mode of the free terrain viewer, with a picture: hillshade and multidirectional lighting, slope, aspect, curvature, sky-view factor, local relief model, contours, hypsometric tint, and how to combine them.