Web Dev Tools
Free online tools to help web developers optimize performance and streamline workflows.
CSS Sprite Generator
Free online CSS sprite generator. Upload images, arrange into sprite sheet, generate CSS code with retina @2x/@3x support. 100% client-side.
Favicon Generator
Generate a complete favicon package: favicon.ico, apple-touch-icon, Android Chrome PNGs, PWA maskable icons & site.webmanifest. Free, no signup.
Regex Tester
Test regular expressions live in your browser on Rust's linear-time engine. Match highlighting, groups, replace, lists and explanations. Nothing is uploaded.
Base64 Encoder / Decoder
Encode or decode Base64 in your browser: paste text, or drop a file too big to paste. URL-safe alphabet, padding and data URI options. Nothing is uploaded.
Hex Encoder / Decoder
Convert text and files to hex, or hex back to bytes, in your browser. Reads hexdumps, C arrays and 0x prefixes; writes any separator. Nothing is uploaded.