All 73 Free Developer Tools

Encode or decode Base64 strings and files instantly

Encode or decode URL components and query strings

Encode or decode HTML entities and special characters

Decode and inspect JSON Web Tokens (JWT) header and payload

Encode or decode Base32 strings

Convert text to binary, hexadecimal, or octal representation

Encode and decode text using the ROT13 substitution cipher

Convert text to Morse code and Morse code to text with auto-detection

Format, beautify, minify, and validate JSON data

Convert between JSON and YAML formats instantly

Convert between JSON and XML formats

Convert between JSON arrays and CSV format

Convert between JSON and TOML formats

Format and beautify SQL queries for better readability

Format, beautify and validate XML documents

Convert Markdown text to HTML with live preview

View, format, and validate YAML documents

Convert numbers between binary, octal, decimal, and hexadecimal

Generate TypeScript interfaces and types from JSON data

Generate Go struct definitions from JSON data

Convert between CSV and JSON formats with type detection

Convert SVG markup to JSX or React components

Convert HTML markup to Markdown format

Convert Tailwind CSS classes to vanilla CSS properties

Convert Unix timestamps to dates and dates to timestamps

Convert between PX and REM CSS units with configurable base font size

Evaluate JSON path expressions and extract data from JSON documents

Convert epoch timestamps with relative time and multiple date formats

Generate UUID v1, v4, and v7 identifiers in bulk

Generate strong, secure random passwords with custom rules

Generate placeholder text in paragraphs, sentences, or words

Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text

Generate HMAC signatures with various hash algorithms

Generate QR codes from text, URLs, or any data

Convert colors between HEX, RGB, HSL formats with picker

Build cron expressions visually with human-readable descriptions

Generate HTML meta tags for SEO, Open Graph, and Twitter Cards

Generate random tokens, API keys, and secure strings

Test regular expressions with real-time matching and group highlighting

Compare two texts and highlight the differences

Convert text between camelCase, snake_case, kebab-case, PascalCase and more

Count words, characters, sentences, paragraphs and reading time

Convert text to URL-friendly slug format

Convert text to Unicode escape sequences and back

Obfuscate strings using various encoding methods

Calculate subnet mask, network address, broadcast, and host range

Parse and breakdown URL components: protocol, host, path, query, hash

Complete reference of HTTP status codes with descriptions

Parse and analyze browser user agent strings

Generate and verify bcrypt password hashes

Generate RSA public and private key pairs

Generate and validate TOTP/HOTP one-time passwords

Analyze password strength with detailed scoring and feedback

Generate BIP39 mnemonic seed phrases for crypto wallets

Calculate Unix file permissions with visual checkboxes

Convert docker run commands to docker-compose.yml format

Press any key to get its keycode, key, code, and location

Search and browse common MIME types and file extensions

Quick reference for common Git commands and workflows

Validate Turkish national ID numbers (TC Kimlik No) with algorithm check

Validate International Bank Account Numbers (IBAN) with country detection

Validate credit card numbers using the Luhn algorithm with card type detection

Validate email addresses with RFC compliance and disposable email detection

Complete ASCII character table with decimal, hex, octal, and binary values

Calculate Turkish VAT (KDV) - add or remove VAT from any amount

Calculate percentages, percentage change, and proportions

Calculate exact age in years, months, and days between two dates

Calculate Body Mass Index with category and ideal weight range

Convert between Celsius, Fahrenheit, and Kelvin temperatures

Convert between bytes, KB, MB, GB, TB with binary and decimal modes

Calculate simple and compound interest with monthly breakdown

Calculate area and perimeter of rectangle, circle, triangle, and trapezoid

Calculate days, weeks, and business days between two dates