Data transformation & validation

Mutate, compare, and validate structured documents. Pretty-print or minify JSON; apply RFC 6902 patches; produce diffs between two versions; check that a CSV's row shapes match its header; or generate a JSON Schema (Draft 2020-12) from one or more sample documents. Each tool is deterministic and never mutates input — perfect for CI pipelines, schema-evolution checks, and structured-content review workflows.

CSV validate

Validate CSV structure: row count, column consistency, quote balance.

Format JSON

Pretty-print, minify, or sort the keys of a JSON document.

JSON diff

Compare two JSON documents and emit a list of differences.

JSON patch

Apply a JSON Patch (RFC 6902) or a JSON Merge Patch (RFC 7396) to a document.

JSON to JSON Schema

Generate a JSON Schema from one or more example documents.