What File Format Should I Use?
Answer a few quick questions and get a format recommendation with links to free conversion tools.
What type of file are you working with?
How to Choose the Right File Format
Picking the right file format saves storage space, preserves quality, and ensures your files work wherever you need them. The best format depends on three things: what you are doing with the file, what quality you need, and where it will be used.
For images, JPG works best for photos on the web, PNG for graphics with transparency, and WebP for the smallest files with modern browser support. For audio, MP3 at 128-320kbps covers most use cases, while FLAC and WAV are for editing and archiving. For video, MP4 with H.264 is universally supported, while WebM is better for web embedding when file size matters.
For documents, PDF is best for sharing because it looks the same on every device. DOCX is the standard when you need editable documents. Use this interactive guide to get a personalized recommendation in seconds.
Frequently Asked Questions
How does the format guide work?
You pick a category (image, audio, video, or document), answer 2-3 questions about your use case, and get a specific format recommendation with an explanation of why it fits your needs.
What image format should I use for the web?
WebP is the best choice for web images in most cases. It offers 25-35% smaller files than JPG with similar quality. You can convert images to WebP for free. Use PNG only when you need transparency with older browser support.
What audio format is best for podcasts?
MP3 at 128kbps is the podcast industry standard. Every app supports it and files stay small. Convert your recordings with our WAV to MP3 converter.
What video format works on all devices?
MP4 with H.264 video and AAC audio plays on virtually every device, browser, and media player. Use our Video to MP4 converter to convert any video format.
When should I use lossless vs lossy formats?
Use lossless formats (PNG, FLAC, WAV) when editing or archiving. Use lossy formats (JPG, MP3, MP4) for sharing and storage savings. Lossy files are 50-90% smaller with minimal difference in perceived quality.
Is this guide free to use?
Yes, completely free with no signup required. The guide runs in your browser and gives instant recommendations.