Compress WebP Images

How it works

1. 1Drop one or more WebP images onto the box above, or click to choose them.
2. 2Each one is re-encoded at once, and the panel shows the original size, the new size, and the saving.
3. 3Slide the quality down until the saving is worth it, checking the preview as you go.
4. 4Download the image, or the whole batch as a ZIP.

Common use cases

• Shrinking WebPs a client or a CMS exported at a needlessly high quality.
• Getting a page's images under a performance budget without converting them to anything else.
• Fitting a WebP under an upload limit on a marketplace, a form or a chat app.
• Re-saving a lossless WebP as a lossy one, which for a photograph is usually far smaller.

Frequently asked questions

What quality should I use?

Start at 75 and look at the preview. For photographs, the 70 to 80 range is usually hard to tell from the original at normal viewing size, and much smaller. Go lower for thumbnails and backgrounds that are never seen up close. Flat graphics and anything with text show damage sooner, so keep those higher.

Why did my WebP get bigger?

Because it was already compressed harder than the setting you chose. A WebP saved at quality 60 and re-saved at 80 has to describe its own compression artifacts in more detail, which costs bytes and gains nothing. When that happens the panel says so: lower the quality, or keep the original.

Does it keep transparency?

Yes. WebP has an alpha channel, and it is carried through untouched, so a cut-out or a logo stays transparent. This is one of the main reasons to use WebP over JPG in the first place.

Does it work on animated WebPs?

No, and it tells you rather than pretending. A browser canvas only sees the first frame of an animation, so compressing one here would hand back a still picture under the same name. Animated files are left alone and marked in the list.

Does compressing a WebP lose quality every time?

Lossy WebP, like JPG, discards a little detail each time it is re-encoded, and no setting brings back what an earlier save threw away. So compress once, from the best copy you have, rather than compressing the compressed file again.

Are my images uploaded to a server?

No. Compression happens entirely in your own browser. The files never leave your device, and nothing is stored.

Related tools

• JPG to WebPConvert JPG photos to WebP for smaller files at the same quality.
• PNG to WebPConvert PNG images to WebP for smaller file sizes.
• Compress JPGReduce JPG file size with an adjustable quality slider.
• WebP to PNGConvert WebP images back to PNG with transparency intact.
• Image ResizerResize any image by pixels or percentage.

Understand what this does

Plain explanations of what is happening to your file, and what it costs you.

• Does compressing an image reduce quality? How to avoid itSometimes, and much less than you would guess. We measured it: the first save does nearly all the damage, and after that a JPEG stops degrading entirely.
• What is a WebP file?The format you did not ask for and cannot open. It is a real image format, it is usually the right one, and converting out of it takes a few seconds.