Developer & Tech Tools
Free, practical tools for developers and makers — encode Base64, format and validate JSON, generate hashes and secure passwords, convert colors and file sizes, inspect IP addresses, and test regular expressions. Everything runs in your browser.
🔁 Base64 Encoder / Decoder
Encode text to Base64 or decode it back, fully UTF-8 safe so accents, CJK, and emoji round-trip cleanly — all in your browser
✨ JSON Formatter
Beautify, validate, or minify JSON with 2- or 4-space indentation, and get a clear error message the moment the input is malformed
🔐 Hash Generator
Compute MD5, SHA-1, SHA-256, and SHA-512 digests of any text at once, locally with the Web Crypto API — for checksums and fingerprints
🎨 Color Converter
Convert a color between HEX, RGB, and HSL and preview a live swatch — paste any format and get the other two instantly
📦 File Size Converter
Convert file sizes across decimal (KB/MB/GB/TB) and binary (KiB/MiB/GiB/TiB) units side by side, with the exact byte count
🌐 IP Address Lookup
Validate and classify any IPv4 or IPv6 address — version, class, and private/loopback/link-local/multicast flags — with no external calls
🔑 Password Generator
Generate strong, random passwords with your choice of length and character sets, built on crypto.getRandomValues — nothing leaves the page
🔎 Regex Tester
Test JavaScript regular expressions against any string, toggle the g/i/m/s flags, and list every match with its index and capture groups