All tools
Every tool on the platform — 32 of them, grouped by category. All free, all keyboard accessible, and the client-side ones never send your input anywhere. Press CtrlK to search from anywhere.
JSON
8 toolsFormat, validate, diff and convert JSON
JSON Formatter
JSON
Pretty-print JSON with configurable indentation and sorted keys.
Runs in your browser
JSON Validator
JSON
Check JSON syntax and get the exact line and column of any error.
Runs in your browser
JSON Diff
JSON
Compare two JSON documents structurally and see what changed.
Runs in your browser
JSON to YAML
JSON
Convert JSON into readable YAML for Kubernetes, CI and config files.
Runs in your browser
JSON Minifier
JSON
Strip whitespace from JSON and see exactly how many bytes you saved.
Runs in your browser
YAML to JSON
JSON
Convert YAML into JSON, with clear errors for invalid documents.
Runs in your browser
JSON Escape
JSON
Escape text into a valid JSON string literal.
Runs in your browser
JSON Unescape
JSON
Turn an escaped JSON string back into readable text.
Runs in your browser
API
4 toolsInspect tokens, status codes, headers and requests
JWT Decoder
API
Decode a JWT header and payload, and check expiry and standard claims.
Runs in your browser
HTTP Status Code Lookup
API
Search every HTTP status code with practical guidance on when to use it.
Runs in your browser
cURL Generator
API
Build a correct cURL command from a URL, method, headers and body.
Runs in your browser
HTTP Header Reference
API
Look up request and response headers, their direction and typical values.
Runs in your browser
Encoding
6 toolsBase64, URL and HTML encoding, both directions
Base64 Encoder
Encoding
Encode text or files to Base64, with URL-safe and MIME options.
Runs in your browser
Base64 Decoder
Encoding
Decode Base64 back to text or download it as a file.
Runs in your browser
URL Encoder
Encoding
Percent-encode a value for use in a URL path, query or form body.
Runs in your browser
URL Decoder
Encoding
Decode percent-encoded URLs and expand query parameters into a table.
Runs in your browser
HTML Encoder
Encoding
Escape HTML special characters to prevent broken or unsafe markup.
Runs in your browser
HTML Decoder
Encoding
Convert HTML entities back into the characters they represent.
Runs in your browser
Developer
7 toolsIDs, hashes, timestamps and regular expressions
Unix Timestamp Converter
Developer
Convert a Unix timestamp to a human date and back, in any time zone.
Runs in your browser
UUID Generator
Developer
Generate cryptographically random UUIDs in bulk (v4, v7 and nil).
Runs in your browser
Hash Generator
Developer
Hash text or files with MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32.
Runs in your browser
Regex Tester
Developer
Test a regular expression against sample text with live match highlighting.
Runs in your browser
Password Generator
Developer
Generate strong random passwords or passphrases with an entropy readout.
Runs in your browser
XML Formatter
Developer
Pretty-print XML with configurable indentation and well-formedness checks.
Runs in your browser
Epoch Converter
Developer
Work with epoch values in seconds, milliseconds, microseconds and ticks.
Runs in your browser
DevOps
2 toolsSchedules, pipelines and operational config
Database
3 toolsSQL formatting, minifying and conversion
SQL Formatter
Database
Format SQL into a consistent, reviewable shape with keyword casing options.
Runs in your browser
SQL to JSON
Database
Turn INSERT statements into JSON rows for fixtures, seeds and tests.
Runs in your browser
SQL Minifier
Database
Collapse SQL to a single line for embedding in code or config.
Runs in your browser
Networking
2 toolsCIDR maths, subnetting and address planning
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