Encoders, decoders, and data tools
Showing 67 tools
Free online code editor and compiler. Support for HTML, CSS, JavaScript, Python, and more with instant live preview.
Design database tables and relationships visually. Export SQL (MySQL, PostgreSQL) instantly. Free online ER diagram tool.
Convert JSON data to CSV format
Convert CSV data to JSON format
Encode text to Base64
Decode Base64 strings
Encode text for URLs
Decode URL characters
Test and debug your regular expressions with real-time highlighting and matching.
Generate detailed UUIDs
Minify JavaScript code (Basic)
Format JavaScript code
Decode JSON Web Tokens
Convert cURL to JavaScript Fetch
Parse HTTP Headers to JSON
Extract specific column from CSV
Create diagrams with code
Convert to/from Unix Timestamps
Convert Hex to RGB
Encode text to HTML entities
Decode HTML entities to text
Convert Markdown to HTML
Calculate Linux Permissions
Generate Cron Expressions
Convert Speed Units
Generate MD5, SHA, RIPEMD Hashes
Compare text and code files quickly and see exactly what's changed. Supports easy side-by-side or inline comparison with syntax highlighting.
Convert JSON to YAML
Convert YAML to JSON
Calculate CIDR and Subnet Masks
Escape/Unescape Special Characters
Sort, Dedup, and Trim Lines
Convert Text to ASCII/Hex
Convert text to camelCase format
Convert text to PascalCase format
Convert text to snake_case format
Convert text to kebab-case format
Convert text to CONSTANT_CASE format
Common Git Commands Reference
HTTP Status Code Lookup
MIME Type Lookup
Chmod/Chown Reference
Ports & Protocols
Docker CLI Commands
Cron Expression Guide
Vim/Nano Commands
Safe Characters Reference
Flexbox Layout Guide
Accessibility Roles
Keyboard Event Keys
Cursor Property List
Common SQL Syntax
Common Regular Expressions
JSON Web Token Guide
SemVer Rules (x.y.z)
Percent EncodingRef
Request/Response Headers
Web Security Risks
ASCII Control Codes
UUID v1 vs v4
Algorithm Complexity Chart
Parse user agent strings to extract browser, OS, and device information
Generate robots.txt files for search engine crawlers
Generate .htaccess configuration files for Apache servers
Generate HTML meta tags for SEO and social media
Generate HMAC (Hash-based Message Authentication Code) hashes