Compare
PNG vs WebP
Both PNG and WebP can support transparency. PNG is a widely supported lossless format; WebP is an option for optimizing web delivery and can also support animation. Compare real assets and target browsers.
Which format should you choose?
Choose PNG when broad compatibility and lossless graphics matter; test WebP when reducing web payload is useful and provide a fallback if required.
Good fit for PNG
UI graphics · Screenshots · Transparent images
- Images requiring transparency
- Text and line art
Good fit for WebP
Web image delivery · Photographs · Transparent web assets
- Reducing web-image transfer size
- Assets that need transparency or animation
Basic information
| Field | PNG | WebP |
|---|---|---|
| Extension | .png | .webp |
| MIME type | image/png | image/webp |
| Common uses | UI graphics · Screenshots · Transparent images | Web image delivery · Photographs · Transparent web assets |
| How to open | Most operating-system viewers, web browsers, and image editors can open PNG files. | Open WebP files in a compatible browser, image viewer, or image editor. |
| Export or convert | Export PNG to JPEG only when transparency and lossless quality are no longer needed. Keep the original PNG for editing, and use a proper export command rather than changing the filename extension. | When exporting WebP to JPEG, transparency is not retained and the output is lossy. When exporting to PNG, decide whether a still image is sufficient and handle animation separately if necessary. Before converting JPEG or PNG to WebP, choose lossy or lossless encoding and confirm transparency and animation requirements. |
Choose by use case
Images requiring transparency
UI graphics · Screenshots · Transparent images
PNGText and line art
UI graphics · Screenshots · Transparent images
PNGReducing web-image transfer size
Web image delivery · Photographs · Transparent web assets
WebPAssets that need transparency or animation
Web image delivery · Photographs · Transparent web assets
WebPKey point 1
PNG uses lossless compression and is widely supported.
More on the differencesKey point 2
WebP supports lossy and lossless images and animation.
More on the differencesMore on the differences
Compare representative images at the required visual quality and check transparency, animation, and browser support. Keep the source asset and verify any fallback path in the actual site.
- PNG is common for crisp graphics and transparent raster images.
- WebP is designed for web image delivery and may reduce file size.
- Neither format is smaller or better for every image.
Frequently asked questions
Should I convert every PNG to WebP?
No. Measure actual files, check visual quality and browser support, and keep a suitable fallback where needed.