Developer Tools

Encoding, hashing, JSON, regex, and generators

31 tools

Base64 Encoder/Decoder

Encode and decode Base64

URL Encoder/Decoder

Encode and decode URL-encoded strings

URL Parser

Parse URL into components

QR Code Generator

Generate QR codes from URLs or text

Subnet Calculator

Calculate network addresses

IP Range Calculator

Calculate IP ranges

Email Validator

Validate email format and check MX records

JSON Formatter

Format, validate, and minify JSON data

Hash Generator

Generate MD5, SHA1, SHA256, SHA512 hashes

UUID Generator

Generate unique identifiers (UUID v4)

Password Generator

Generate secure random passwords

JWT Decoder

Decode and inspect JSON Web Tokens

Timestamp Converter

Convert between Unix timestamps and dates

Cron Parser

Parse and explain cron expressions

Color Converter

Convert between HEX, RGB, HSL color formats

Regex Tester

Test and debug regular expressions

CIDR Calculator

Calculate CIDR notation and IP ranges

What's My IP

Show your public IP address

Lorem Ipsum Generator

Generate placeholder text

Random Number Generator

Generate random numbers within a range

XML Formatter

Format, minify, and validate XML documents

Slug Generator

Create clean URL slugs from text with bulk mode and options

Code Image Generator

Turn code into themed SVG and PNG share cards

Terminal Screenshot Generator

Render shell output as terminal-style snapshots

Diff Image Generator

Render unified diffs as color-coded image cards

YAML Formatter

Validate and pretty-print YAML documents locally

JSON Tree Viewer

Inspect nested JSON structures in a tree view

XML Tree Viewer

Inspect XML nodes, attributes, and text structure

CSV Explorer

Parse CSV into a lightweight local table explorer

JSON Schema Generator

Infer a basic schema from example JSON documents

Mermaid Live Editor

Render Mermaid diagrams and export SVG output

Frequently asked questions

How do I decode a JWT token?: JWT tokens have three Base64-encoded parts separated by dots: header, payload, and signature. Our JWT Decoder parses tokens to show the header claims, payload data, and expiration time without needing a secret key.
How do I validate a regular expression?: Our Regex Tester lets you enter a pattern and test string to see matches in real-time. It supports JavaScript regex syntax, shows capture groups, and highlights all matches in your test content.
How do I format and validate JSON?: Our JSON Formatter validates JSON syntax, pretty-prints with proper indentation, and highlights errors with line numbers. Paste your JSON to instantly see if it is valid and get a readable formatted version.
How do I generate a UUID?: UUIDs (Universally Unique Identifiers) are 128-bit identifiers. Our UUID Generator creates version 4 random UUIDs that are safe for database keys, session IDs, and distributed systems. Generate one or bulk generate multiple.
How do I convert colors between formats?: Our Color Converter transforms between HEX, RGB, HSL, and other color formats. Enter any color value to see all equivalent representations, useful for CSS, design tools, and cross-platform development.
How do I decode Base64 strings?: Base64 is an encoding scheme that represents binary data as ASCII text. Our Base64 Encoder/Decoder converts text to Base64 and decodes Base64 back to readable text, supporting both standard and URL-safe variants.
How do I parse a cron expression?: Cron expressions define scheduled task timing using 5 or 6 fields. Our Cron Parser explains each field (minute, hour, day, month, weekday) and shows the next scheduled run times in human-readable format.
How do I find my public IP address?: Your public IP is the address visible to websites and services. Our What Is My IP tool instantly shows your IPv4 and IPv6 addresses along with basic geolocation information like city and country.