Developer Tools
Browse our collection of developer tools. Find the perfect tool for your needs.
Base64 Encoder
Encode and decode Base64 strings online. Convert text to Base64 and Base64 to text instantly.
Credit Card Validator
Validate credit card numbers using Luhn algorithm. Identify card type and format card numbers. Free credit card validator tool.
Cron Expression Generator
Visual cron builder with human-readable descriptions. Validate cron expressions. Free cron expression generator tool.
CSS Formatter
Format, validate, and minify CSS code online. Free CSS formatter and validator tool.
CSS Validator
Validate CSS code and check for errors and warnings. Free CSS validator tool.
CSV to JSON Converter
Convert CSV files to JSON format and JSON to CSV. Support for custom delimiters and header rows. Free CSV to JSON converter tool.
Escape/Unescape Tool
Escape and unescape special characters in strings. Support for JavaScript, HTML, JSON, and URL escaping. Free escape/unescape tool.
Favicon Generator
Generate favicons from images. Multiple sizes (16x16, 32x32, etc.). Download as ICO or PNG. Free favicon generator tool.
Hash Generator
Generate MD5 and SHA256 hashes from text online. Create checksums and verify data integrity.
HTML Entity Encoder/Decoder
Encode special characters to HTML entities and decode HTML entities to text. Support for named and numeric entities. Free HTML entity encoder and decoder tool.
HTML Formatter
Format, beautify, minify, and validate HTML code online. Improve readability and optimize HTML files.
HTML Validator
Validate HTML code and check for errors. Free HTML validator tool.
HTTP Headers Parser
Parse HTTP headers string. Format and beautify. Extract specific headers. Free HTTP headers parser tool.
IBAN Verification Online
IBAN verification online - Check valid IBAN, validate IBAN numbers, and verify international bank account numbers. Free online IBAN validator and checker tool.
Image to Base64 Converter
Convert images to Base64 strings online. Upload images and get Base64 encoded strings. Support for PNG, JPG, GIF, and other image formats. Free image to Base64 converter tool.
IP Address Tools
Validate IP addresses (IPv4/IPv6) and calculate subnet information. Free IP address validator and subnet calculator tool.
JavaScript Formatter
Format, validate, and minify JavaScript code online. Free JavaScript formatter and validator tool.
JSON Formatter
Format, validate, and minify JSON data. Works with APIs, data structures, and configuration files.
JWT Decoder
Decode and inspect JSON Web Tokens (JWT). View header, payload, and signature. Check expiration and token validity.
Markdown Editor
Edit Markdown and preview HTML output. Convert Markdown to HTML and HTML to Markdown. Live preview and syntax highlighting.
Number Base Converter
Convert numbers between binary, hexadecimal, octal, and decimal number systems. Free online number base converter tool.
Password Generator
Generate strong, secure passwords with customizable length and character types. Perfect for creating secure accounts.
Regex Tester
Test and debug regular expressions with real-time matching and highlighting. Validate patterns and extract matches.
SQL Formatter
Format and beautify SQL queries online. Support for multiple SQL dialects including MySQL, PostgreSQL, SQLite, and more. Free SQL formatter tool.
Text Diff Tool
Compare two text files and highlight differences. Side-by-side or unified diff view with line, word, or character-level comparison.
URL Encoder
Encode and decode URL strings online. Handle URLs, query parameters, and special characters.
User Agent Parser
Parse user agent strings. Browser, OS, device detection. Format output. Free user agent parser tool.
UUID Generator
Generate UUIDs (Universally Unique Identifiers) v1 and v4. Validate UUID format and create unique identifiers.
XML Formatter
Format, validate, and minify XML files online. Free XML formatter and validator tool.
YAML Formatter
Format, validate, and convert YAML files. Convert YAML to JSON and JSON to YAML. Free YAML formatter and validator tool.