Paste. Detect. Transform.
Format, decode, compare, convert, and generate developer data without sending sensitive input to a server.
Purpose-built utilities
Each tool has a direct workspace with useful documentation, examples, and local processing. Start here or open a focused utility.
JSON Formatter & Validator
Beautify, minify, and validate JSON locally with clear errors.
Open tool →JWT Decoder
Decode JWT headers and payloads locally and inspect expiry claims.
Open tool →Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 values in your browser.
Open tool →URL Encoder / Decoder
Encode URL components or decode percent-encoded text locally.
Open tool →Unix Timestamp Converter
Convert Unix seconds or milliseconds to readable dates and back.
Open tool →UUID Generator
Generate secure UUID v4 identifiers locally in your browser.
Open tool →JSON Diff
Compare two JSON or JSON5-style documents and see structural changes clearly.
Open tool →XML Diff
Compare XML documents with readable structural differences.
Open tool →SOAP Diff
Compare SOAP 1.1 or SOAP 1.2 envelopes, headers, bodies, and Faults locally.
Open tool →Text Diff
Compare plain text with readable additions and removals.
Open tool →Regex Tester
Test regular expressions and inspect matches and capture groups.
Open tool →JSON to TypeScript
Generate TypeScript interfaces from JSON examples locally.
Open tool →JSON to Java
Generate Java classes or records from JSON examples.
Open tool →JSON to YAML
Convert JSON to readable YAML in your browser.
Open tool →YAML to JSON
Convert YAML to formatted JSON locally.
Open tool →cURL to Code
Turn common cURL requests into code for popular languages.
Open tool →Cron Expression Parser
Explain cron expressions and calculate upcoming runs locally.
Open tool →