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JSON Formatter & Validator
Validate, prettify, minify, copy, and download JSON.
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Developer · Local processing
Format, encode, decode, validate, hash, convert, and generate developer data locally. Process sensitive text and developer inputs locally without sending them to an application server. No account required.
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Functional tools with crawlable routes, clear limitations, and honest output.
Validate, prettify, minify, copy, and download JSON.
Decode JWT headers and payloads without claiming signature verification.
Encode or decode UTF-8 text and local files as Base64.
Generate batches of cryptographically random UUID v4 identifiers.
Test regular expressions in a disposable worker with a timeout.
Create SHA-256, SHA-384, or SHA-512 digests for text and files.
Convert Unix seconds or milliseconds to UTC, ISO, and local dates.
Encode or decode URL components and complete URLs.
Convert JSON and YAML with a safe standards-based local parser.
Format standard SQL and common database dialects.
Preview GitHub-flavored Markdown through sanitized local HTML.
Create customizable passwords with Web Crypto randomness.