WebP vs PNG vs JPG: Which Image Format Should You Use?
A clear breakdown of WebP, PNG, and JPG — when to use each, what the tradeoffs are, and how to convert between them for free.
JPG, PNG, and WebP are the three most common image formats on the web, but they're not interchangeable. Picking the wrong one can mean bloated file sizes, missing transparency support, or quality loss where it matters. Here's when to use each.
Quick Comparison
| JPG | PNG | WebP | |
|---|---|---|---|
| Compression | Lossy | Lossless | Both |
| Transparency | No | Yes | Yes |
| Best for | Photos | Screenshots, logos | Web images |
| Browser support | Universal | Universal | Modern browsers |
JPG: Best for Photos
JPG (also written JPEG) uses lossy compression — it discards some image data to produce smaller files. For photographs with lots of color variation, this tradeoff is barely noticeable and the size savings are significant.
Use JPG for:
- Digital photos and product images
- Any image where file size matters more than pixel-perfect accuracy
- Email attachments and social media uploads
Avoid JPG for:
- Screenshots, diagrams, or images with sharp text (compression artifacts become visible on hard edges)
- Logos and icons
- Images that need a transparent background
PNG: Best for Graphics and Transparency
PNG uses lossless compression — no data is thrown away. What you save is what you get back, making it ideal for images where sharpness matters. It also supports full alpha transparency.
Use PNG for:
- Logos, icons, and UI screenshots
- Images with text or fine lines
- Anything that needs a transparent background
Avoid PNG for:
- Large photographs: compare JPEG, PNG and WebP output rather than assuming a fixed size ratio.
WebP: The Modern Default for the Web
WebP supports lossy and lossless encoding, transparency and animation. It can reduce file size for suitable content, but no fixed saving follows from the format name. Compare at your chosen dimensions and settings. The tools on this site export static, lossy WebP.
Use WebP for:
- Web images where page load speed matters
- Images served via a CDN
- Any modern site targeting current browsers
Avoid WebP for:
- Files that need to open in older apps or tools that don't support WebP
- Sharing outside web contexts where compatibility is uncertain
Converting Between Formats
All conversions happen in your browser — no upload required:
- JPG to WebP — reduce file size for web
- PNG to WebP — modern format with transparency support
- WebP to JPG — convert back for maximum compatibility
- WebP to PNG — preserve transparency when converting away from WebP
Sources and maintenance
References checked on 2026-10-30. Format capabilities and app support are separate from this site’s output; check the tool’s current options and limitations.