Free tools for developers
50+ tools · runs in browser

Developer Tools, Fast & Free

No login. No ads. No nonsense. Just tools that work.

Data & Formatting

JSON Formatter

Format and validate JSON instantly in your browser.

Base64 Encoder / Decoder

Encode or decode Base64 strings with one click.

URL Encoder / Decoder

Encode special characters in URLs or decode percent-encoded URLs.

UUID Generator

Generate unique UUIDs for your projects.
Text Tools

Word Counter

Count words, characters, sentences and paragraphs.

Timestamp Converter

Convert Unix timestamps to readable dates and back.

Lorem Ipsum Generator

Generate placeholder text for designs and mockups.

Diff Checker

Compare two pieces of text and spot the differences.

Markdown to HTML

Convert Markdown to clean HTML instantly with preview.
Developer Utilities

Regex Tester

Test and debug regular expressions in real time.

JWT Decoder

Decode and inspect JWT tokens instantly.
Security & Crypto

Password Generator

Generate strong random passwords with custom options.

Hash Generator

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
CSS & Color

CSS Minifier

Minify CSS to reduce file size instantly.

Color Converter

Convert between HEX, RGB, and HSL color formats.
Code Formatters

HTML Formatter

Format and beautify HTML code with proper indentation instantly.

CSS Beautifier

Convert minified CSS to readable formatted code instantly.
Data Tools

JSON to CSV

Convert JSON arrays to CSV format. Download as a file instantly.

Remove Duplicate Lines

Remove duplicate lines from any list. Sort and trim options included.

Text Case Converter

Convert text between camelCase, snake_case, Title Case and more.
Utilities

QR Code Generator

Generate QR codes for URLs, text, WiFi, email and more. Download as PNG.

Number Base Converter

Convert between binary, decimal, octal and hexadecimal instantly.

String Length Counter

Count characters, bytes, words and lines. Check against any limit.

HTML Entity Encoder

Encode special characters to HTML entities and decode them back.

Cron Expression Generator

Build cron schedules visually with plain English explanation.

JavaScript Minifier

Minify JavaScript to reduce file size. Removes comments and whitespace.

XML to JSON

Convert XML documents to clean JSON format instantly.

YAML Validator

Validate YAML and see the parsed structure as JSON instantly.

Robots.txt Generator

Generate a robots.txt file for your website with presets and download.

HTTP Status Codes

Complete reference of all HTTP status codes with descriptions. Searchable.
Media & Files

Image Compressor

Compress JPG and PNG images in your browser. No upload to any server.
Design Tools

Color Picker

Pick any color and get HEX, RGB and HSL values. Save your palette.

Color Palette Generator

Generate complementary, analogous and triadic color palettes instantly.

Favicon Generator

Create favicons from text or emoji. Download in multiple sizes.
Developer Tools

JSON to XML

Convert JSON to clean XML format instantly in your browser.

SQL Formatter

Format and beautify SQL queries with proper indentation instantly.

Chmod Calculator

Calculate Unix file permissions. Convert between octal and symbolic notation.
Writing & Editing

Markdown Editor

Write Markdown with live preview. Export to HTML. Auto-saves in browser.
CSS Generators

CSS Grid Generator

Build CSS grid layouts visually. Copy the code instantly.

Box Shadow Generator

Create CSS box shadows visually with live preview and presets.

Border Radius Generator

Create rounded corners and organic shapes. Copy the CSS instantly.
SEO Tools

Meta Tag Generator

Generate SEO meta tags, Open Graph and Twitter Card tags instantly.
Productivity

Pomodoro Timer

Stay focused with 25 minute sessions and breaks. Tracks your daily sessions.
Calculators

Age Calculator

Calculate exact age in years, months, days and hours. Find days to next birthday.

BMI Calculator

Calculate Body Mass Index using metric or imperial units instantly.

Tip Calculator

Calculate tips and split bills between any number of people.

Percentage Calculator

Six percentage calculations in one place. Instant results.

Aspect Ratio Calculator

Calculate and scale dimensions while maintaining aspect ratio.
Advanced Tools

SVG to CSS

Convert SVG to CSS background-image data URI. No extra HTTP requests.

JSON Schema Generator

Generate JSON Schema from JSON data. For API validation and documentation.