Free Online Image Format Converter
FormatDiet makes it easy to convert images between popular formats like JPG, PNG, and WebP. Unlike cloud-based tools, all processing happens directly in your browser — your files are never uploaded to any server.
Supported Conversions
- JPG to PNG: Add transparency support to your images
- PNG to JPG: Reduce file size by removing alpha channel
- Any to WebP: Modern format with superior compression
- WebP to JPG/PNG: Convert for broader compatibility
Why Choose FormatDiet?
- 100% Private: No server uploads, your files stay on your device
- Instant Processing: Convert images in milliseconds using browser APIs
- High Quality: 95% quality output maintains visual fidelity
- Free Forever: No signup, no watermarks, no limits
When to Use Each Format
- JPG: Best for photographs, smaller file size, no transparency
- PNG: Best for graphics with transparency, lossless quality
- WebP: Best of both worlds, modern browsers only