How to Batch Convert PNG to WebP (Many Files at Once)
PNG is lossless, meaning every pixel is stored exactly, and it supports full transparency. Add your PNG files to the box below and each one turns into a WebP instantly, on your own computer or phone, without anything being uploaded.
Drop PNG files here or browse
Accepts HEIC, WebP, PNG, JPG, BMP, GIF and SVG · multiple files · nothing is uploaded
Converted on your device. Your photos never leave your browser.
The steps: Batch Convert PNG to WebP (Many Files at Once)
- 1
Open this page on your computer or phone.
- 2
Select every file in one go – Ctrl+A (Windows) or ⌘A (Mac) in the file picker, or Select on iPhone – or drag the whole lot onto the box.
- 3
Your WebP is ready the moment the file is added. Lower the Quality if you'd like a lighter file.
- 4
Each file is converted the moment it's added. Click Download all to get everything in a single ZIP.
What happens to your image going from PNG to WebP
- WebP is a lossy format. The Quality slider begins at 90%, which is indistinguishable from the original for almost any photo; slide it down for a smaller file and the preview shows the new size before you save.
- Make sure the place you're uploading to takes WebP – most sites and browsers do, though some older apps and forms don't.
PNG vs WebP in brief
- PNG is lossless, meaning every pixel is stored exactly, and it supports full transparency. That suits screenshots, logos and graphics perfectly, but a photo saved as PNG is often several times larger than the same shot as a JPG.
- WebP is an image format Google designed to make websites load faster. It handles lossy and lossless compression, transparency and animation, and typically comes out 25–35% smaller than a matching JPG, although some editors, older programs and upload forms still won't take it.
Worth knowing
- You can add as many files as you like. Bigger batches simply take a bit longer, since your own device is doing the work.
- Files with the same name get a number added (photo.jpg, photo-2.jpg), so nothing in the ZIP gets overwritten.
PNG vs WebP
| PNG | WebP | |
|---|---|---|
| Compression | Lossless | Lossy or lossless |
| Transparency | Yes, with a full alpha channel | Yes |
| Animation | No (editors rarely support APNG) | Yes |
| Ideal for | Screenshots, logos and graphics with text or see-through areas | Quick-loading pictures on web pages |
| Works on | Everywhere | Every modern browser; uneven in older desktop software |
Questions & answers
Does changing PNG to WebP lower the quality?
At the 90% default you won't be able to tell. WebP is lossy, so very low settings can bring blur or blocky edges.
Can I do a whole batch of PNG files?
Yes. Add as many as you want; each is converted separately, and Download all bundles them into a single ZIP.
Do my photos get sent anywhere?
No. Your browser does the conversion with your device's own processor, so your photos stay with you. Once the page has loaded you could even switch off your internet connection.
Need more options? Open the full PNG to WebP tool →