Developer Tools Suite
Essential developer utilities: JWT token decoders, regex visualizers, CSS minifiers, cryptographic hashers, and Linux permissions calculators.
JWT Token Decoder & Header Inspector
Decode JSON Web Tokens (JWT) locally in your browser. Inspect JOSE header, claims payload, and token expiration timestamps.
Regex Visual Tester & Match Inspector
Test and debug JavaScript regular expressions with real-time match highlighting, capture groups, and replacement substitution.
CSS Code Minifier & Compressor
Minify CSS stylesheets online: remove comments, compress whitespace, collapse zero dimensions, and optimize colors.
Cryptographic Hash Generator (MD5, SHA-256, SHA-512)
Generate cryptographic checksum hashes in your browser using native Web Crypto API: SHA-1, SHA-256, SHA-384, SHA-512, and MD5.
CSS Box Shadow Visual Generator
Create customizable CSS box-shadow effects with real-time blur, spread, X/Y offset, color, and inset controls.
Linux Permissions & Chmod Calculator
Interactive Linux file permission calculator: convert between octal numbers (e.g. 755, 644) and symbolic permissions (rwxr-xr-x).
URL Encoder & Decoder with Query Parser
Encode and decode URL percent-encoded characters, query strings, and parse query parameters into a key-value table.
JSON Obfuscator & Compressor
Minify payloads and encode keys or unicode string escapes with dictionary mapping.
ESBuild & JS Decompiler
Unpack bundled IIFEs, expand minified comma-statements, and restore clean ES6 formatting.
Universal Media Downloader
Save video streams from YouTube, Twitter/X, TikTok, and Instagram with zero quality loss.
Bulk Image ToolBulk Image Resizer
Scale, resize, and compress entire folders of PNG and JPEG images client-side.