GeoJSON Validator
Validate GeoJSON structure, coordinate ranges, ring closure, and common topology problems with severity-labelled findings.
Input
Self-intersections and ambiguous axis order are flagged for review and never repaired automatically.
Review these warnings
Validation report
Map preview
Understanding GeoJSON Validator
Validity, topology and data quality
Validate GeoJSON structure, coordinate ranges, ring closure, and common topology problems with severity-labelled findings.
GeoJSON Validator checks or changes structural properties of spatial data. Geometric validity concerns rules such as ring closure and self-intersection; factual accuracy requires separate real-world verification.
How to review a repair
Self-intersections and ambiguous axis order are flagged for review and never repaired automatically.
After GeoJSON Validator, compare changed feature counts, coordinates and shapes with the source. Automated cleaning can resolve a technical defect while introducing an unwanted geographic change.