All developer tools

Every tool runs in your browser. Nothing you paste is uploaded.

JSON

JSON FormatterBeautify, validate, minify and explore JSON in an interactive tree.JSON ValidatorCheck JSON syntax and pinpoint the exact line of every error.JSON ViewerExplore large JSON documents as a collapsible tree.JSON MinifierStrip whitespace from JSON to shrink payloads.JSON Escape / UnescapeEscape text into a JSON string literal, or unescape it back.

XML

XML FormatterPretty-print, validate and minify XML with a tree view.XML to JSONConvert XML documents into clean, readable JSON.JSON to XMLTurn JSON objects into well-formed XML.

YAML

YAML FormatterValidate, format and explore YAML configuration files.JSON to YAMLConvert JSON into clean YAML for Kubernetes, CI and config files.YAML to JSONConvert YAML configuration into formatted JSON.

Markdown

Markdown EditorWrite Markdown with a live GitHub-style preview.

Converters

JSON to CSVFlatten JSON arrays into CSV for Excel and Google Sheets.CSV to JSONConvert CSV or TSV rows into a JSON array of objects.

Encoders & Decoders

Base64 Encode / DecodeEncode and decode Base64 and Base64URL, including UTF-8 and files.URL Encoder / DecoderEncode, decode and parse URLs and build query strings.JWT DecoderDecode JSON Web Token headers and payloads and check expiry.

Generators

UUID GeneratorGenerate random v4 and time-ordered v7 UUIDs in bulk.Hash GeneratorCompute SHA-256, SHA-1, SHA-384 and SHA-512 hashes of text or files.

Text & Time

Diff CheckerCompare two texts, JSON or XML files and highlight differences.Epoch ConverterConvert Unix timestamps to dates and back, in any timezone.

Choosing the right tool

If you have a minified API response, start with the JSON Formatter; to find out exactly why a payload fails to parse, the JSON Validator highlights the failing line as you type. Large nested documents are easiest to explore in the JSON Viewer.

For configuration work, the YAML Formatter catches indentation mistakes, and the converters move data between JSON, YAML, XML and CSV when one system expects a different format than another produces.

When you are debugging authentication, the JWT Decoder shows a token's claims and expiry, while the Base64 and URL tools reverse the encodings you meet in headers and query strings.