GeoJSON Validator
Validate, format, and inspect GeoJSON data with detailed error reports and live map preview. Catch structure errors, RFC 7946 compliance issues, and coordinate problems instantly.
Comprehensive GeoJSON Validation
More than a syntax checker — validate structure, coordinate integrity, and RFC 7946 compliance with actionable error messages.
Deep Structure Validation
Go beyond JSON syntax checking. Validates GeoJSON-specific structure including required fields, geometry types, coordinate formats, polygon ring closure, and position counts. Each issue includes the exact path to help you fix it quickly.
RFC 7946 Compliance Checks
Detects non-compliant patterns like incorrect polygon winding order, deprecated CRS fields, and coordinates outside WGS84 bounds. Warnings help you produce interoperable GeoJSON that works across all platforms.
Live Map Preview
See your valid GeoJSON rendered on an interactive map as you edit. Points, lines, and polygons are displayed with automatic styling. The map updates in real time as you fix validation errors.
How to Validate GeoJSON
Paste or Import GeoJSON
Enter your GeoJSON in the code editor on the left, or drag & drop a .geojson/.json file. The editor supports syntax highlighting and auto-formatting.
Review Validation Results
Errors, warnings, and info messages appear in the results panel. Each issue shows the severity, message, and the exact JSON path where the problem occurs.
Fix Issues
Edit your GeoJSON in the code editor to fix reported issues. Validation runs automatically as you type. Use the Format button to pretty-print your data.
Export Clean GeoJSON
Once your GeoJSON passes validation, copy it to your clipboard or export it as a .geojson file. Use Minify to reduce file size for production use.
Why Use Our GeoJSON Validator
Detailed Error Messages
Every validation issue includes the exact JSON path, so you can locate and fix problems instantly instead of guessing.
Data Statistics
See feature counts, geometry type distribution, coordinate counts, bounding box, and file size at a glance.
Format & Minify
Pretty-print for readability or minify for production. One-click formatting with the toolbar buttons.
Drag & Drop Import
Drag a .geojson or .json file directly onto the editor. No file dialogs needed.
100% Free
No usage limits, no account required. Professional GeoJSON validation at zero cost.
Privacy First
All validation runs in your browser. No data is sent to any server.
Frequently Asked Questions
What does this GeoJSON validator check?
What is the difference between errors and warnings?
What GeoJSON types are supported?
Is there a file size limit?
How is this different from the GeoJSON Editor?
Is my data sent to a server?