Developer Tools & Utilities

Paste your JSON into the JSON Formatter and it instantly detects syntax errors, highlights them by line number, and reformats with proper indentation. Valid JSON shows a green checkmark; invalid shows the exact error position. Supports minification for production use. Everything runs in your browser — no data sent to any server.

Base64 converts binary data or text into ASCII characters using a 64-character alphabet. To encode: paste your text and click Encode. To decode: paste a Base64 string and click Decode. Common uses: encoding images for CSS, passing data in URLs, storing binary in JSON. Use the Base64 Encoder / Decoder for instant two-way conversion.

A UUID is a 128-bit identifier formatted as 8-4-4-4-12 hex characters, e.g. 550e8400-e29b-41d4-a716-446655440000. Version 4 UUIDs are randomly generated with a collision probability so low they are considered globally unique. Use the UUID Generator to create one or multiple v4 UUIDs instantly for databases, APIs, or testing.

Enter your regex pattern and your test string in the Regex Tester. It highlights all matches in real time as you type. You can test flags: global (g), case-insensitive (i), and multiline (m). Common uses: email validation, phone number parsing, log file extraction. Uses the JavaScript engine — matches browser and Node.js behavior exactly.

A secure password needs at least 16 characters including uppercase, lowercase, numbers, and symbols. Avoid dictionary words or predictable patterns. The Password Generator uses the Web Crypto API for cryptographically random output. Set length from 8 to 128 characters and choose which character types to include.

A JWT (JSON Web Token) consists of three Base64-encoded parts separated by dots: header (algorithm), payload (claims), and signature. Paste the full JWT into the JWT Decoder to see the algorithm, issued-at time, expiry, and all custom claims. Note: decoding only inspects the payload — it does not verify the signature.

HEX #FF5733 converts to RGB by splitting into pairs: FF=255, 57=87, 33=51 → rgb(255, 87, 51). Use the Color Picker which converts instantly between HEX, RGB, HSL, and RGBA with a visual picker and CSS-ready output you can copy directly.

Binary 1010 = decimal 10 = hexadecimal A. Method: multiply each binary digit by its power of 2 from right to left and sum: 1×8 + 0×4 + 1×2 + 0×1 = 10. Use the Number Base Converter for instant conversion between binary, octal, decimal, and hexadecimal.

MD5 produces a 128-bit (32 hex character) hash. SHA-256 produces a 256-bit (64 hex character) hash and is cryptographically stronger. MD5 is no longer secure for cryptographic use but works for checksums and non-security identifiers. Use the Hash Generator for MD5, SHA-1, SHA-256, and SHA-512 — computed entirely in your browser.

Your public IP is assigned by your ISP and is what websites see when you connect. It differs from your local/private IP (192.168.x.x or 10.x.x.x) which is only visible on your local network. The What Is My IP tool shows your current public IPv4 and IPv6 address, approximate location, ISP name, and connection type. No data is stored.