Developer Tools
UUID, Base64, binary conversion, and other dev utilities in your browser.
JSON Minifier & Formatter
Free online JSON minifier and formatter. Minify JSON to shrink payloads or beautify (pretty-print) JSON with 2-space indentation. Validates as you go - no upload required.
HTML Minifier
Free online HTML minifier. Compress and minify HTML by removing comments and collapsing whitespace - smaller files, faster page loads. Runs in your browser, no upload required.
CSS Minifier
Free online CSS minifier. Compress and minify CSS by removing comments and collapsing whitespace - smaller stylesheets, faster page loads. Runs in your browser, no upload required.
JavaScript Minifier
Free online JavaScript minifier. Compress and minify JS by removing comments and collapsing whitespace - smaller files, faster page loads. Runs in your browser, no upload required.
UUID Generator
Generate UUID v4 and GUID identifiers in your browser. Create one or many random UUIDs for databases, APIs, and testing.
Base64 Encoder / Decoder
Free online Base64 encoder and decoder. Encode text to Base64 or decode Base64 back to plain text, with full Unicode (UTF-8) support - runs entirely in your browser.
Image to Base64 Converter
Convert an image to Base64 or a data URL in your browser - your image never leaves your browser. Paste screenshots, copy CSS/HTML/Markdown snippets, or decode Base64 back to a downloadable file.
Text to Binary Converter
Convert text to binary and binary back to text. Free ASCII/UTF-8 text to binary converter that runs in your browser.
URL Encoder / Decoder
Encode text and URLs to percent-encoding or decode encoded URLs back to plain text. Switch between encodeURIComponent and encodeURI, right in your browser.
Hash Generator
Generate SHA-256, SHA-1, SHA-384, and SHA-512 hashes from any text. Get the lowercase hex digest instantly in your browser - nothing is uploaded.
JWT Decoder
Decode JWT header, payload, and signature in your browser. Free JSON Web Token decoder - no signature verification, nothing uploaded.
Regex Tester
Test JavaScript regular expressions in your browser. See match groups, flags, and highlights - nothing is uploaded.
Cron Expression Generator
Build or paste a Unix cron expression in your browser. See plain-English meaning, field-by-field breakdown, next 5 run times, and copy crontab or GitHub Actions snippets. Nothing is uploaded.
Browse 13 free developer tools on ToolsMinify. UUID, Base64, binary conversion, and other dev utilities in your browser.