Information & Tools
Explore our comprehensive collection of articles and useful tools to help you work with files and file extensions.
๐ Educational Articles
File Basics
- What are file extensions? - Learn the fundamentals of file extensions and why they matter
- Folders, files and paths - Understanding file system organization
- File extensions and MIME types - How browsers and servers identify file types
- Common file formats explained - Guide to popular document, image, video, and audio formats
Opening Files
- How to open files on Windows - Step-by-step guide for Windows users
- How to open files on Mac - Opening files on macOS and OS X
- How to open files on Linux - Working with files in Linux distributions
- Opening files on mobile devices - iOS and Android file handling
Security & Best Practices
- File extensions and security - Protecting yourself from malicious files
- Dangerous file extensions to watch out for - Common threats and how to avoid them
- File encryption basics - Keeping your files secure
Technical Information
- Windows registry - Understanding file associations in Windows
- File compression explained - ZIP, RAR, 7Z and other archive formats
- Converting between file formats - Tools and techniques for file conversion
- Hidden file extensions in Windows - How to show or hide file extensions
๐ ๏ธ Free Online Tools
๐ File Analyzer
Upload a file to identify its type, read metadata, and get detailed information about its format and properties.
๐ Extension Search
Search our database of file extensions to find which programs can open specific file types.
๐ฌ Hex Viewer
View the hexadecimal representation of any file to analyze its binary structure.
๐ File Hash Calculator
Calculate MD5, SHA-1, SHA-256 hashes for file integrity verification.
๐ค Text Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.
๐ Base64 Encoder/Decoder
Encode text or files to Base64, or decode Base64 strings back to text.
๐ JSON Formatter
Format, validate, and minify JSON data with syntax error detection.
๐ Quick Reference
- 100 most common file extensions - Quick reference guide
- Image formats comparison - JPEG vs PNG vs GIF vs WebP
- Video formats comparison - MP4, AVI, MKV, MOV explained
- Audio formats comparison - MP3, WAV, FLAC, AAC guide