GeoJSON Formatter

GeoJSON Formatter provides a strict formatting and validation workflow for GeoJSON data used in GIS pipelines, APIs, and data exchanges. It accepts raw GeoJSON, validates structure and geometry types, and outputs a clean, machine-friendly JSON string. It targets developers, data engineers, GIS analysts, and QA engineers who need consistent formatting to simplify diffs, deployments, automated processing, and interoperability across services.
Conceptually, the tool parses the input, validates against RFC 7946, and then re-serializes with user-specified styling. It supports compact or pretty output, optional key sorting for deterministic results, and coordinate precision control to limit decimal places without altering topology. If the input is a raw Geometry, it can wrap it into a Feature or FeatureCollection to maintain a uniform data model for downstream systems.
Unique value lies in deterministic, scalable formatting for large payloads, comprehensive error reporting with JSON paths, and optional normalization of coordinates to a chosen precision. It helps teams maintain consistent data footprints, reduces churn in version control, and improves automation pipelines. The formatter is language- and platform-agnostic, producing valid JSON that can be consumed by mapping libraries, databases, and REST APIs with minimal post-processing.
Core features include strict validation, pretty or compact output, precision trimming, optional wrapping into FeatureCollections, and clear validation messages. Typical use cases include preparing GeoJSON for API requests, validating data before storage, and auditing datasets. The tool differentiates itself by focusing on RFC 7946 conformance, deterministic output, and safe, non-destructive formatting that preserves geometry integrity while improving readability and interoperability.