Image Format Comparison

WebP vs PNG: Modern Compression vs Universal Compatibility

WebP is Google's modern image format designed specifically for the web, achieving 25–34% smaller file sizes than PNG while supporting both lossy and lossless compression, transparency, and animation. PNG has been the web standard for lossless images since 1996 and works everywhere — every browser, every app, every operating system. If you're building a website today, WebP is the right choice for performance; if you're sharing images with people or software outside the browser, PNG remains the reliable standard.

WebPvsPNG

Quick Verdict

Use WebP when…

Use WebP for web images where loading speed matters — it's 25–34% smaller than PNG at equivalent quality and supported by all modern browsers. The default choice for web development in 2024.

Use PNG when…

Use PNG when you need the image to work in older software, email clients, image editors that don't support WebP, or any context outside the modern web browser.

WebP vs PNG: Feature Comparison

Feature	WebP	PNG
Developed by	Google — released 2010, widely adopted by 2020	W3C / PNG Development Group — 1996
Compression	Lossy or lossless — 25–34% smaller than PNG	Lossless only — larger files
Transparency	Yes — full alpha channel	Yes — full alpha channel
Browser support	All modern browsers (Chrome, Firefox, Safari 14+, Edge)	Universal — all browsers including Internet Explorer
Software compatibility	Limited in older apps and desktop software	Universal — every image editor and viewer
Animation	Supported — replaces animated GIFs with smaller files	APNG only — limited support

When WebP wins

✓Developed by: Google — released 2010, widely adopted by 2020
✓Compression: Lossy or lossless — 25–34% smaller than PNG
✓Transparency: Yes — full alpha channel

When PNG wins

✓Developed by: W3C / PNG Development Group — 1996
✓Compression: Lossless only — larger files
✓Transparency: Yes — full alpha channel

Frequently asked questions

Does WebP support transparency like PNG?

Yes. WebP supports full alpha channel transparency, just like PNG. You can use WebP to replace transparent PNGs in web projects with smaller file sizes.

Can Photoshop open WebP files?

Photoshop CC 22.1 (2021) and later supports WebP natively. Older versions require a plugin. Other tools like GIMP, Figma, and modern image editors generally support WebP.

Is WebP always better than PNG for websites?

For photographs and complex images, yes — WebP's lossy mode is dramatically smaller. For simple icons with few colors, PNG's lossless compression can sometimes be comparable in size. SVG is usually the best choice for icons and logos regardless.

Will WebP work on older iPhones?

Safari added WebP support in iOS 14 (September 2020). Devices running iOS 13 or earlier cannot display WebP natively. If you need to support very old Apple devices, keep a PNG fallback.