PNG vs WebP
A practical comparison of two image formats that both support transparency.
Which is better — PNG or WebP?
WebP generally produces smaller file sizes than PNG while supporting both lossy and lossless compression. PNG remains widely compatible and is the standard choice when universal browser support or lossless quality is required. For web use where modern browser support is acceptable, WebP is typically the more efficient choice.
Comparison Table
| Feature | PNG | WebP |
|---|---|---|
| Compression | Lossless only | Lossy and lossless |
| Transparency | Yes (alpha channel) | Yes (alpha channel) |
| Animation | No (use GIF/APNG) | Yes |
| Typical file size | Larger | 25-35% smaller (lossy) |
| Best for | Graphics, screenshots, transparency | Web images, photos with transparency |
| Browser support | Universal | All modern browsers (Chrome, Firefox, Safari, Edge) |
| Editing support | Universal | Growing; some editors require conversion |
When to Choose PNG
- You need guaranteed lossless quality
- You need transparency and universal compatibility
- The image will be edited repeatedly (PNG preserves quality across saves)
- You are creating screenshots or UI elements
- You need to support older software or browsers
When to Choose WebP
- You want smaller file sizes for web use
- You need both lossy and lossless options in one format
- You need transparency but want better compression than PNG
- You want animated images without GIF limitations
- Your audience uses modern browsers
File Size Comparison
For lossless compression, WebP typically produces files 20-30% smaller than PNG. For lossy compression, WebP can produce files significantly smaller than PNG while maintaining good visual quality. The exact savings depend on the image content — images with large areas of flat color benefit more from lossless compression, while photographic images benefit more from lossy compression.
For example, a screenshot with flat colors might compress to 50KB as PNG and 35KB as WebP lossless. A photograph might compress to 500KB as PNG and 150KB as WebP lossy at quality 80.
Practical Recommendation
For most modern web use cases, WebP provides a good balance of quality and file size. PNG remains the safe choice when you need guaranteed compatibility or lossless editing workflows. Consider your audience's browser support and your specific quality requirements when choosing between the two.
Conversion Tools
Frequently Asked Questions
Can WebP replace PNG completely?
For web use, WebP can replace PNG in most cases. However, PNG remains the standard for lossless workflows, editing, and situations where universal compatibility is required.
Does converting PNG to WebP lose quality?
If you use WebP lossless mode, quality is preserved. If you use WebP lossy mode, some quality loss occurs, similar to JPG compression.
Do all browsers support WebP?
All modern browsers (Chrome, Firefox, Safari, Edge) support WebP. Older versions of some browsers may not, but this affects a very small percentage of users.
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Written by Image Tools Team
Published: 2026-08-15 · Updated: 2026-08-28