Free Developer Tools

These free developer tools cover daily dev tasks: formatting and validating JSON, minifying HTML, beautifying CSS, encoding Base64 and URLs, generating QR codes, secure passwords, hashes, and SEO meta tags. All tools run locally in your browser — safe for tokens, configs, and client data.

JSON Formatter Format, validate & minify JSON with error locations. HTML Minifier Minify HTML — strip comments & whitespace, see size savings. CSS Beautifier Format messy or minified CSS into clean, readable code. Base64 Encoder/Decoder Encode & decode Base64 text and files — UTF-8 safe. QR Code Generator Create QR codes for URLs, Wi-Fi, text & more — free PNG/SVG. Password Generator Generate strong random passwords with a crypto-secure RNG. Color Picker Pick colors & convert HEX, RGB, HSL — with palettes & shades. Meta Tag Generator Generate SEO meta tags, Open Graph & Twitter cards. Robots.txt Generator Build a correct robots.txt with AI-crawler controls. MD5 Hash Generator Generate MD5, SHA-1, SHA-256 & SHA-512 hashes instantly. URL Encoder/Decoder Encode & decode URLs and query strings — percent encoding.

Helpful guides

July 2, 2026 · 8 min read

How to Compress Images Without Losing Quality (2026 Guide)

Image compression can cut file sizes by 60–90% with zero visible difference — if you use the right quality settings and formats. Here's exactly how.

July 6, 2026 · 9 min read

EMI Calculator Explained: Formula, Examples & Money-Saving Tips

EMI looks like a magic number your bank hands you — but it comes from one formula you can verify yourself. Here it is, with worked examples and ways to pay less.