How to Convert PNG to WebP
Looking to shrink your PNG images for faster web loading? Converting to WebP can cut file sizes dramatically while keeping visual quality high. This converter runs entirely in your browser -- your images never leave your device, and there are no file size limits or daily caps.
WebP is Google's modern image format, purpose-built for the web. It supports both lossy and lossless compression, and in lossless mode, WebP files are typically 26% smaller than equivalent PNGs. For websites, this translates directly into faster page loads, lower bandwidth costs, and better Core Web Vitals scores. Every major browser now supports WebP, making it a practical replacement for PNG in most web contexts.
PNG vs WebP: What's the Difference?
| Feature | PNG | WebP |
|---|---|---|
| Compression type | Lossless only | Lossy and lossless |
| Typical file size | Large | 26% smaller (lossless), 25-34% smaller (lossy) |
| Transparency | Full alpha channel | Full alpha channel |
| Animation | Limited (APNG) | Supported natively |
| Software compatibility | Universal -- works everywhere | All modern browsers, growing desktop support |
| Best use case | Print, archival, desktop apps | Websites, web apps, CDN delivery |
The key tradeoff is compatibility versus size. PNG works everywhere -- from 20-year-old software to modern browsers. WebP offers substantially smaller files but is primarily a web format. For anything going on a website, WebP is the clear winner. For documents, print, or legacy workflows, stick with PNG.
How to Convert PNG to WebP
- Drop or click to upload your PNG files above.
- Files convert to WebP automatically right in your browser -- nothing gets uploaded.
- Download individual WebP files or all of them bundled in a ZIP.
Frequently Asked Questions
How much smaller is WebP than PNG?
In lossless mode, WebP files are about 26% smaller than PNG on average. With lossy compression at high quality settings, the savings can reach 60-80% with minimal visible difference, depending on the image content.
Does PNG to WebP lose transparency?
No. WebP fully supports alpha channel transparency, just like PNG. Your transparent backgrounds, semi-transparent effects, and alpha gradients all carry over intact during conversion.
Do all browsers support WebP?
Yes, as of 2024 every major browser supports WebP: Chrome, Firefox, Safari (since version 14), Edge, and Opera. Global browser support exceeds 97%. The only holdouts are very old browser versions that are no longer maintained.
Should I use WebP for my website?
For most websites, absolutely. WebP reduces image payload significantly, which improves page load speed and Core Web Vitals. If you need to support extremely old browsers, serve WebP with a PNG fallback using the HTML picture element.
What quality setting should I use?
For photographs, a quality of 80-85 gives an excellent balance between file size and visual quality. For graphics, logos, or screenshots with sharp text, use lossless mode (quality 100) to avoid compression artifacts around hard edges.