Developer Tools

JSON, hashing, regex, SQL and more — the utilities developers reach for daily, all running client-side in your browser.

Text Tools Developer Tools Generator Tools Calculator Tools Design Tools Productivity Tools Files & Media Games
JSON Path Finder
Paste JSON and click any key to instantly get its dot or bracket notation path.
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Base64 Encoder/Decoder
Encode text to Base64 or decode back to plain text. Convert files to Base64 data URIs instantly.
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Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text or files instantly in your browser.
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Regex Tester
Test regular expressions live with match highlighting, replace mode, flags and quick reference.
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JWT Decoder
Decode and inspect JWT tokens — header, payload, expiry date and signature info in one click.
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Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal bases with explanations.
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JSON Formatter
Paste JSON to auto-format, validate and syntax-highlight it. Detects all errors at once with line numbers.
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Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Live clock, 10 output formats, copy in one click.
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SQL Formatter
Paste messy SQL to format, syntax-highlight and minify instantly. Supports SELECT, INSERT, UPDATE, DELETE and more.
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JSON ↔ CSV Converter
Convert JSON arrays to CSV spreadsheets and back — bidirectional, with auto type detection and download.
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Code Playground
Write HTML, CSS and JS with a live preview — like CodePen. Switch layouts, preview on mobile/tablet, and minify.
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HTML Editor
Write HTML with a live preview — see your changes rendered instantly in desktop, tablet or mobile width.
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