Photograph a paper map or import a screenshot.
Tap the grid corners to fix perspective.
Sync two grid intersections to real coordinates.
Drape your map over live elevation data.
Quick Start Guide 2 min readEffective October 23, 2026
Terrain Labs is a free web app made by AMN Collective ("we", "us"). This policy explains what happens with your information when you use it. Short version: we don't sell your personal information, and nothing you put into the app is ever sent to us. If you allow it, we use Google Analytics to see how the app is used.
There are no accounts, no sign-ups and no ads. If you click “Accept” on the cookie banner, Google Analytics collects general usage information, such as pages viewed, approximate location (country/region), device and browser type, and how you found the app, using cookies. It also records which features you use, such as which buttons, tabs and settings you click or change, and whether you load a file. It does not record the values or text you enter, the files themselves or their names, or anything you draw or type. If you decline, no analytics cookies are set. You can change your choice anytime with Cookie settings. Photos you take or upload, the coordinates you type, your sketches and your 3D models are processed only inside your own browser and are never sent to us.
The app saves two things in your browser's own storage, only on your device: your light/dark theme choice, and any elevation (.hgt) files you choose to load so they work offline next time. You can delete them anytime with "Clear Saved Tiles" in the app or by clearing your browser's site data.
If you tap "Snap Map Photo", your phone or browser asks for permission to use the camera. The photo stays on your device. You can say no and upload a picture instead.
To work, the app loads a few things from other companies. When it does, your browser connects to them directly, and like any website they can see your IP address and basic browser info. We don't control them and don't receive that information.
Analytics only runs if you accept cookies, so you can turn it off by declining (or with Cookie settings). We don't respond to Do Not Track signals separately.
We do not sell or share personal information, and we don't use it for targeted advertising.
The app is meant for a general audience and is not aimed at children under 13. We don't knowingly collect personal information from children under 13.
Depending on where you live (for example Texas under the Texas Data Privacy and Security Act, California, other U.S. states, the EU or the UK), you may have the right to ask what data we hold about you, to correct it or to delete it. Since we don't hold any, there is normally nothing to provide, but you can always contact us and we'll reply within 45 days. If we ever decline a request, you can appeal by replying to that email.
If this policy changes, we'll update it here and change the effective date at the top.
AMN Collective: contact@amncollectives.com
Effective October 13, 2026
By using Terrain Labs you agree to these terms. If you don't agree, please don't use the app.
Terrain Labs is provided free by AMN Collective for personal and professional reference. You may use it for any lawful purpose. Please don't try to break, overload, copy and resell, or misuse the app.
Maps, photos and sketches you use stay yours. Only use maps and images you have the right to use. Because everything stays on your device, you are responsible for saving and backing up your own work.
Terrain Labs gives estimates for reference only. See the Disclaimer. Don't rely on it alone for navigation, route planning, or any decision where a mistake could cause injury, death or property damage.
The app is provided "as is" and "as available", without warranties of any kind, express or implied, including accuracy, fitness for a particular purpose, and non-infringement. We don't promise it will always be available, error-free or accurate.
To the fullest extent allowed by law, AMN Collective and its members are not liable for any indirect, incidental, special, consequential or punitive damages, or for any loss or injury resulting from your use of or reliance on the app. Since the app is free, our total liability for any claim is limited to $0, or the lowest amount the law allows.
You agree to cover AMN Collective against claims arising from your misuse of the app or your breaking of these terms.
The Terrain Labs name, logo, design and app are owned by AMN Collective. Open-source parts belong to their owners and are used under their licenses (see Credits & Licenses).
We may change or discontinue the app, or update these terms, at any time. Continuing to use the app means you accept the updated terms.
These terms are governed by the laws of the State of Texas, United States. If any part is found unenforceable, the rest stays in effect.
3D models, elevations, coordinates, distances, line-of-sight results, routes and the ridge, valley, peak and saddle markings are computer estimates. They can be wrong because of:
Always check against official maps, a GPS/compass, and what you can actually see on the ground. Conditions such as weather, vegetation, buildings, water and closures are not shown. You use Terrain Labs at your own risk, and you are responsible for your own decisions and safety.
Terrain Labs is an independent product of AMN Collective. It is not affiliated with or endorsed by the U.S. Geological Survey, NASA, NOAA, Amazon, Google or any government agency.
AMN Collective wants Terrain Labs to be usable by as many people as possible. We aim to follow the Web Content Accessibility Guidelines (WCAG) 2.1 Level AA where we can.
Some core features are visual by nature: tapping map corners, the 3D terrain view and the sketch canvas. These may be hard or impossible to use with a screen reader. We're working to improve this.
If something doesn't work for you, email contact@amncollectives.com and tell us what you were trying to do. We'll do our best to help.
Elevation data from Terrain Tiles on AWS (Mapzen / Linux Foundation Tilezen), via the AWS Registry of Open Data. Source data:
Offline .hgt files you load yourself come from their own providers (for example SRTM, courtesy of the U.S. Geological Survey / NASA).
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Terrain Labs and the Terrain Labs logo are trademarks of AMN Collective. All other names belong to their owners.