OpenAnyFile
Works
Viewing, inspecting and verifying. You get a collapsible, syntax-coloured tree you can expand node by node. File details, exact byte size and the detected signature are always shown.
How to open a .geojson file
A GEOJSON file is a GeoJSON, introduced by IETF in 2008. Below: what is actually inside one, and how to open it without installing special software.
What is a .geojson file?
GeoJSON is a data & config format developed by IETF, first appearing in 2008. It is normally produced by Mapbox, Leaflet, GIS tools.
RFC 7946 mandates WGS 84 coordinates in longitude, latitude order — the reversed order that breaks maps for so many first-time users.
| Full name | GeoJSON |
|---|---|
| File category | Data & config |
| MIME type | application/geo+json |
| Magic bytes (file signature) | 7B ({) |
| Developer | IETF |
| Introduced | 2008 |
| Usually created by | Mapbox, Leaflet, GIS tools |
| OpenAnyFile engine | JSON tree viewer |
| Opens without upload | Yes — parsed locally in your browser |
Open a .geojson file in your browser
OpenAnyFile routes .geojson to its JSON tree viewer, which parses a collapsible, syntax-coloured tree you can expand node by node.
- Open the OpenAnyFile opener in this browser — nothing to download or sign up for.
- Drag your .geojson file onto the drop zone, click to browse for it, or paste it with Ctrl+V.
- The extension is detected and the file is handed to the JSON tree viewer.
- Your GEOJSON opens on its own viewer page: a collapsible, syntax-coloured tree you can expand node by node.
- Use fullscreen for a closer look, or download the file back out unchanged. No account, no upload, no watermark, no file-size gate.
What you can and cannot do with it here
Does not work
Editing and re-saving. OpenAnyFile is a reader, not an editor — for changes you still need special software or an equivalent.
No upload, and here is why that matters for {E}
Handing a .geojson file to a random conversion site means handing over a copy you cannot get back. OpenAnyFile parses the file locally instead — the same way special software reads it off your disk, except the reader happens to be a web page. Nothing is transmitted, so there is nothing to leak, log or subpoena. It also means it keeps working with your Wi-Fi switched off.
Frequently asked questions about GEOJSON files
Can I open a .geojson file without installing special software?
Yes. OpenAnyFile's JSON tree viewer runs in your browser, so you can read a GEOJSON file with nothing installed. You get a collapsible, syntax-coloured tree you can expand node by node. For full editing you still need the original application — this is a viewer, not an editor.
How can I check a file really is a GEOJSON file?
Look at the first bytes rather than the extension. A genuine GEOJSON begins with 7B ({). Opening the file in OpenAnyFile shows that signature in the file-details panel, so a file renamed to .geojson by mistake is easy to spot.
Is it safe to open a GEOJSON file online?
With OpenAnyFile, yes, because nothing is uploaded. The file is read locally through your browser's File API and never leaves your device, so there is no server copy to leak, log or retain. That matters most for the kind of file people are least willing to hand to a random converter site.
What is a .geojson file, exactly?
GeoJSON — an application/geo+json format created by IETF since 2008. RFC 7946 mandates WGS 84 coordinates in longitude, latitude order — the reversed order that breaks maps for so many first-time users.
Does the same viewer handle formats related to GEOJSON?
Yes — the same engine also opens .json, .har, .jsonl, so you can compare related files without switching tools.
Related formats
These open with the same engine, so if you have one of these sitting next to your .geojson file, it will open too: