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Developer Tools — 23 Free Tools

23 free tools for developers. Format, validate, encode, generate — all browser-based.

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23 Free Tools
All tools are completely free to use with no hidden limits.
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100% Private
All processing happens in your browser. No file uploads.
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Instant Results
No waiting, no queue. Results are instant.
🔐Data & Encoding6 tools
JSON Formatter
Format & validate JSON
Free · No login
JSON to CSV
Convert JSON to CSV
Free · No login
Base64 Encoder
Encode/decode Base64
Free · No login
XML Formatter
Format & validate XML
Free · No login
YAML Validator
Validate YAML syntax
Free · No login
JWT Decoder
Decode JWT tokens
Free · No login
⚙️Generators7 tools
Hash Generator
MD5, SHA1, SHA256
Free · No login
MD5 Generator
Quick MD5 hash
Free · No login
UUID Generator
Generate unique IDs
Free · No login
QR Code Generator
Create QR codes instantly
Free · No login
Barcode Generator
Generate barcodes
Free · No login
Cron Generator
Build cron expressions
Free · No login
.htaccess Generator
Apache config builder
Free · No login
💅Code Formatters6 tools
HTML Minifier
Minify HTML code
Free · No login
CSS Minifier
Minify CSS code
Free · No login
JS Minifier
Minify JavaScript
Free · No login
SQL Formatter
Format SQL queries
Free · No login
PHP Formatter
Format PHP code
Free · No login
Regex Tester
Test regular expressions
Free · No login
🔢Number & Encoding4 tools
Binary Converter
Binary/hex/decimal
Free · No login
Number Base
Convert number bases
Free · No login
HTML Viewer
Preview HTML code live
Free · No login
Markdown Editor
Live Markdown preview
Free · No login