PNG to WEBP converter
Convert PNG to WEBP in seconds, free and unlimited. No upload, no sign-up, no watermark: your image never leaves your device.
Last updated
Quick answer: To convert PNG to WEBP, add the PNG file to the iHateFiles PNG to WEBP converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. Trades a little detail for a much smaller file. The quality slider decides how much.
Should you convert PNG to WEBP?
Do this for photographs, where WEBP saves a great deal of space for a difference almost nobody can see. Keep the PNG if the image is a screenshot, a logo, or anything with text or hard edges in it.
PNG keeps everything, WEBP does not
PNG stores the image exactly. WEBP discards detail to save space, and the quality setting on this page decides how much. This is the right trade for photographs and the wrong one for screenshots and line art, where PNG edges stay crisp and WEBP smudges them.
Expect a much smaller file
A PNG of a photograph is routinely several times the size of the same picture as WEBP. That saving is the reason to do this, and on a photograph it costs very little that anyone will notice.
PNG and WEBP side by side
| PNG | WEBP | |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | Yes | Yes |
| Animation | No | Yes |
| Written here | Yes | Yes |
What usually goes wrong
About the PNG. People save photographs as PNG and wonder why an email bounces. A photo that is 400 KB as a JPG is routinely 4 MB as a PNG, because lossless compression cannot do much with the noise in a real photograph.
About the WEBP. A WEBP renamed to .jpg still fails validation, because uploaders read the first bytes of the file rather than the name. Convert it properly.
How to convert PNG to WEBP
- Add your PNG file. It is read from your disk and stays there.
- Check the settings. The output format is already set to WEBP.
- Press convert and the WEBP file is saved back to your device.
Questions
How do I convert PNG to WEBP?
Open this page, add your PNG file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this PNG to WEBP converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Will converting to WEBP lose quality?
WEBP is a lossy format, so some detail is discarded. The quality control on this page decides how much. The default is set high enough that most people cannot see the difference.
Can I convert several PNG files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.