Developer Tools
Format JSON, decode JWT tokens, encode/decode Base64 strings, test regular expressions, and convert Unix timestamps online.
JSON Formatter & Validator
Developer Tools
Format, validate, beautify, and minify JSON data with real-time error highlights.
Base64 Encoder/Decoder
Developer Tools
Encode plain text or files to Base64 formats and decode back instantly.
JWT Analyzer & Decoder
Developer Tools
Parse tokens to audit active headers, claims, payloads, and signatures.
Regex Tester & Debugger
Developer Tools
Evaluate regular expressions, capture matches, and check group bindings.
URL Encoder & Decoder
Developer Tools
Sanitize query inputs, escape parameters, or decode URL paths.
HTML Entity Converter
Developer Tools
Escape markup text characters to HTML entities to secure code rendering.
Unix Timestamp Converter
Developer Tools
Translate epochs to local dates and follow real-time clock tickers.
UUID/GUID Generator
Developer Tools
Generate single or bulk RFC 4122 compliant UUID v1 and v4 keys.
Cron Expression Builder
Developer Tools
Construct visual schedules, view human translations, and next execution runs.
Code Beautifier / Minifier
Developer Tools
Format and minify HTML, CSS, JavaScript, JSON, and SQL codes in-browser.
Text Diff Checker
Developer Tools
Inspect side-by-side block differences, additions, and line alterations.
Markdown to HTML
Developer Tools
Convert markdown text to standard parsed HTML markup code.
About Developer Tools Utilities
Speed up everyday software development tasks. All utilities run client-side for maximum speed and data privacy — no data is logged or uploaded.
Frequently Asked Questions
Is it safe to paste sensitive JWT tokens or JSON payloads?
Yes — all formatting, decoding, and parsing operations run client-side in your browser JavaScript memory.