Developer Tools Collection
30 Free Developer Tools
Format, validate, encode, generate — all the tools developers need, 100% free and no login required.
All 30
JSON 3
Encoder/Decoder 4
HTML & CSS 4
JavaScript 2
Code Tools 4
Generator 6
Color 3
SEO 4
Popular
JSON Formatter
JSON
Beautify and prettify messy JSON with proper indentation and syntax highlighting in one click.
Popular
JSON Validator
JSON
Instantly validate and check JSON syntax. Highlights errors with line numbers for quick debugging.
New
JSON Viewer
JSON
View JSON data in a collapsible tree structure. Navigate nested objects and arrays with ease.
Popular
Base64 Encoder
Encoder / Decoder
Encode text or binary data to Base64 format. Supports file encoding for images and documents.
Free
Base64 Decoder
Encoder / Decoder
Decode Base64 encoded strings back to readable text or binary data instantly in your browser.
Free
URL Encoder
Encoder / Decoder
Encode special characters in URLs using percent-encoding. Essential for building correct API requests.
Free
URL Decoder
Encoder / Decoder
Decode percent-encoded URLs back to human-readable text. Perfect for parsing query strings.
Popular
HTML Minifier
HTML & CSS
Compress HTML by removing whitespace, comments, and unnecessary characters to reduce file size.
Free
HTML Beautifier
HTML & CSS
Format and prettify minified or messy HTML code with proper indentation for readability.
Popular
CSS Minifier
HTML & CSS
Minify CSS files by removing whitespace and comments to speed up your website load time.
Free
CSS Beautifier
HTML & CSS
Format and beautify CSS code with proper indentation, making it easier to read and maintain.
Hot
JavaScript Minifier
JavaScript
Minify JavaScript code to reduce file size and improve page load speed for production.
Free
JavaScript Beautifier
JavaScript
Unminify and prettify JavaScript code. Add proper indentation and line breaks for debugging.
Popular
SQL Formatter
Code Tools
Format and beautify SQL queries with proper indentation, capitalization and line breaks.
Free
XML Formatter
Code Tools
Prettify and format XML documents with proper indentation and structure for easy reading.
New
XML Validator
Code Tools
Validate XML documents for syntax errors and well-formedness with clear error messages.
Hot
Regex Tester
Code Tools
Test and debug regular expressions in real time. Highlights matches with group capture support.
Free
UUID Generator
Generator
Generate unique UUIDs v1 and v4. Copy single or bulk UUIDs for databases and APIs.
Hot
QR Code Generator
Generator
Generate QR codes for URLs, text, contact info, and WiFi. Download as PNG or SVG.
Popular
Password Generator
Generator
Generate strong random passwords with custom length, uppercase, numbers, and special symbols.
New
SHA256 Generator
Generator
Generate SHA-256 hash of any text or string. Used for data integrity verification and security.
Free
MD5 Generator
Generator
Generate MD5 hash from any text. Commonly used for checksums and legacy password hashing.
Free
Lorem Ipsum Generator
Generator
Generate placeholder Lorem Ipsum text in paragraphs, words, or sentences for design mockups.
Popular
Color Picker
Color
Pick colors from a visual palette and get HEX, RGB, HSL, and CMYK codes instantly.
Free
HEX to RGB Converter
Color
Convert HEX color codes to RGB values instantly. Supports short HEX codes and alpha channel.
Free
RGB to HEX Converter
Color
Convert RGB color values to HEX color codes. Enter R, G, B values and get the HEX instantly.
New
Unix Timestamp Converter
Utility
Convert Unix timestamps to human-readable dates and vice versa. Supports multiple timezones.
Hot
Meta Tag Generator
SEO
Generate SEO meta tags, Open Graph tags, and Twitter Card tags for your web pages instantly.
New
Robots.txt Generator
SEO
Generate a robots.txt file to control search engine crawlers. Define allow/disallow rules easily.
New
Sitemap Generator
SEO
Generate an XML sitemap for your website. Paste your URLs and download a ready-to-submit sitemap.