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Tools

Everything is client-side: fast, private, and mobile-friendly.

Open FormatterRead Docs

Compare & Validate

Spot differences and issues quickly.

JSON Diff
Popular
Compare two JSON documents visually.

Convert

Move data between formats safely.

JSON to CSV
Export arrays to CSV for spreadsheets.
JSON ↔ YAML
Convert config files for DevOps.
JSON to XML
Integrate with legacy systems.
SQL to JSON
Transform SQL results to JSON.

Encode & Decode

Developer helpers for everyday tasks.

JWT Decoder
Security
Inspect headers and payload safely.
Base64
Encode/decode UTF-8 strings.
URL Encode
Encode/decode query strings.
Timestamp
Unix/ISO conversions.

Validate & Generate

Validate data and generate identifiers.

JSON Schema Validator
New
Validate JSON against schema.
UUID Generator
New
Generate UUIDs v1/v4/v7.