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Free Developer & SEO Tools
Format, minify, encode, hash, and generate — everyday tools for developers and SEO work, all running instantly in your browser. No sign-up, completely free. Click any tool below to open it.
JSON Formatter & Validator
Format, validate, and minify JSON with clear error messages.
CSS Minifier
Strip comments and whitespace to shrink your CSS file size.
HTML Minifier
Remove comments and extra whitespace from HTML markup.
Base64 Encoder/Decoder
Convert text to and from Base64 encoding, both directions.
URL Encoder/Decoder
Make text safe for use in a URL, or decode it back to normal.
Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes of any text.
QR Code Generator
Turn any text or URL into a downloadable, scannable QR code.
Meta Tag Generator
Generate title, description, Open Graph, and Twitter Card tags.
Keyword Density Checker
See how often each keyword appears in your content, as a percentage.
Slug Generator
Convert any text into a clean, SEO-friendly URL slug.