Free PNG to WebP converter online
Need a WebP instead of a PNG? This free converter turns PNG files into WebP images right in your browser. Add as many files as you like, adjust the settings and download the results individually or together as a ZIP.
PNG is a lossless format: it never throws image data away, so text and sharp edges stay crisp and it supports full transparency. The trade-off is file size: a photo saved as PNG is often 5 to 10 times bigger than the same photo as JPG. PNG files can hold hidden text chunks with software names, authors and dates.
WebP is a modern format created by Google for the web. It is typically 25 to 35 percent smaller than an equivalent JPG and supports transparency and animation, which is why so many websites now serve it. The downside is compatibility: older versions of Photoshop, Windows Photo Viewer, many printers and lots of upload forms still cannot open WebP files.
About PNG and WebP files
New to these formats? These pages explain what each one is for and how to open it on Windows, Mac, iPhone and Android.
Why convert PNG to WebP?
- WebP files are much smaller than JPG and PNG at the same visual quality, which makes web pages load faster and improves Core Web Vitals and SEO.
How to convert PNG to WebP
- Click the upload box or drag and drop your PNG files (you can select several at once).
- Conversion to WebP starts automatically. Change the quality or background colour if you like.
- Download each WebP file or click 'Download all' for a ZIP.
Features
- Batch conversionConvert hundreds of PNG files at once.
- No uploadFiles never leave your device, so it is fast and private.
- Strips metadataThe WebP files contain no EXIF or GPS data.
- Any deviceWorks on iPhone, Android, Windows, Mac and Chromebook.
PNG vs WebP: what's the difference?
| Feature | PNG | WebP |
|---|---|---|
| Full name | Portable Network Graphics | WebP (Google) |
| Released | 1996 | 2010 |
| Compression | Lossless | Lossy and lossless |
| Transparency | Yes (full alpha) | Yes (full alpha) |
| Animation | APNG only | Yes |
| Typical file size | Large | Very small |
| Best for | screenshots, logos, graphics with text and anything that needs a transparent background | websites, because it is 25-35% smaller than JPG at the same quality |
| Compatibility | Universal: every browser, OS and editor | All modern browsers; some older desktop apps and upload forms still reject it |
| File extensions | .png | .webp |
| MIME type | image/png | image/webp |
Frequently asked questions
How do I convert PNG to WebP?
Open this page, add your PNG files, and FileStripe converts them to WebP in your browser. Then download the files one by one or as a ZIP. It takes a few seconds and you don't need to install anything.
Will converting PNG to WebP reduce quality?
WebP is a lossy format, so there is a small, usually invisible, loss. Use the quality slider: 90 or above is visually identical for almost all images, but note that PNG graphics with sharp text may look slightly softer.
Can I convert multiple PNG files to WebP at once?
Yes. Select or drop as many PNG files as you like; there is no limit on the number or size of files.
Is the PNG to WebP free?
Yes. The PNG to WebP is completely free with no sign-up, no watermarks, no daily limits and no premium tier.
Are my files uploaded to a server?
No. FileStripe processes your files locally in your web browser using JavaScript. Nothing is uploaded, so the PNG to WebP is safe for private photos and confidential documents and even works offline once the page has loaded.
Does it work on iPhone and Android?
Yes. The PNG to WebP works in Safari, Chrome, Firefox, Edge and Samsung Internet on phones, tablets and computers. On a phone you can pick files from your photo library or files app and share the result straight to another app.
Last updated · Processing happens locally in your browser.