How to Convert Multiple PNG Files to WebP at Once
PNG is a lossless format: it keeps every pixel exactly and supports full transparency. Drop your PNG files into the converter below and every one becomes a WebP straight away, right on your any computer or phone – nothing is 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.
Step by step: Convert Multiple PNG Files to WebP at Once
- 1
Open this page on your computer or phone.
- 2
Select all your files at once – Ctrl+A (Windows) or ⌘A (Mac) in the file picker, or tap Select on iPhone – or drag a whole selection onto the box.
- 3
The WebP is made as soon as the file is added. Adjust Quality if you want a smaller file.
- 4
Each file converts as soon as it's added. Click Download all to get every converted file in one ZIP.
What changes when you convert PNG to WebP
- WebP is lossy. The Quality slider starts at 90%, which looks the same as the original for nearly every photo; lower it for a smaller file and the preview shows the new size before you download.
- Check that wherever you're uploading accepts WebP – most websites and browsers do, but some older apps and forms don't.
About PNG and WebP
- PNG is a lossless format: it keeps every pixel exactly and supports full transparency. That makes it ideal for screenshots, logos and graphics, but photos saved as PNG are often several times bigger than the same photo as a JPG.
- WebP is Google's image format for websites. It supports lossy and lossless compression, transparency and animation, and is usually 25–35% smaller than an equivalent JPG – but some editing apps, older software and upload forms still reject it.
Good to know
- There's no limit on the number of files. Large batches just take longer, because your own device does the work.
- Duplicate names get a number added (photo.jpg, photo-2.jpg) so nothing in the ZIP is overwritten.
PNG vs WebP
| PNG | WebP | |
|---|---|---|
| Compression | Lossless | Lossy or lossless |
| Transparency | Yes, full alpha channel | Yes |
| Animation | No (APNG is rarely supported by editors) | Yes |
| Best for | Screenshots, logos, graphics with text or transparency | Fast-loading images on websites |
| Support | Universal | All modern browsers; patchy in older desktop apps |
Frequently asked questions
Will I lose quality converting PNG to WebP?
At the default 90% quality the difference is practically invisible. WebP is lossy, so very low quality settings will show blur or blocky edges.
Can I convert several PNG files at once?
Yes. Add as many as you like; each converts on its own, and Download all saves them in one ZIP.
Are my photos uploaded to a server?
No. The conversion runs in your browser using your device's own processor, so your photos never leave your device. You can even disconnect from the internet once the page has loaded.
Need more options? Open the full PNG to WebP tool →