Free Online Developer Tools Suite

Popular

JSON Formatter & Validator

Beautify, format, minify, and validate JSON data with clear syntax error line highlighting.

Format JSON

Essential

CSS & JS Minifier

Compress CSS and JavaScript source files to reduce file sizes and boost page speed.

Minify Code

RFC4122

Unique ID Generator

Generate unique IDs, v4 UUIDs, and GUIDs in bulk with custom casing, hyphens, and brace options.

Generate Unique IDs

Real-Time

Unix Timestamp Converter

Convert Unix epoch timestamps (seconds/ms) to human dates, UTC, ISO 8601, and vice versa.

Convert Timestamp

Interactive

Regex Tester & Debugger

Test regular expression patterns live with regex flags, group extraction, and pattern presets.

Test Regex

Encoding

Base64 Encoder / Decoder

Encode text strings into Base64 or decode Base64 data with UTF-8 and URL-safe compatibility.

Encode / Decode

Web Tool

URL Encoder / Decoder

Safely percent-encode or decode web URLs, query parameters, and special characters.

Encode URL

Design

Color Palette & Picker

Pick HEX, RGB, and HSL colors, sample screen colors with EyeDropper, and build matching palettes.

Pick Colors

Security

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512, SHA-3, and HMAC hashes for text or files client-side.

Generate Hashes

Permissions

Chmod Calculator

Calculate Unix file permissions in octal (755, 644, 777) and symbolic notation (-rwxr-xr-x) with Linux terminal commands.

Calculate Chmod

SEO Social

Open Graph Generator

Generate Open Graph and Twitter Card social meta tags for SEO with live Facebook & Twitter card previews.

Generate OG Tags

Network

IP Address Lookup

Find location, ISP, ASN, timezone, and geolocation details for any IPv4, IPv6 address, or domain name.

Lookup IP