compressjpeg Compress images

Compress to WebP

Convert and compress images to WebP — the smallest modern web format.

To WebP

Drag & drop files here, or

Accepts .jpg, .jpeg, .png

  1. Upload JPEG or PNG images.
  2. Each is converted to optimised WebP.
  3. Download your web-ready files.

WebP compresses better than both JPEG and PNG and still supports transparency, which makes it the format of choice for fast websites. This tool converts your JPEG or PNG to an optimised WebP for the smallest possible file with no visible loss.

Why WebP wins on two fronts at once

Most formats force a choice: JPEG is small but can't do transparency, PNG keeps transparency but is heavy. WebP refuses that trade-off. It uses lossy compression as capable as JPEG's for photographs, yet it also carries a full alpha channel like PNG, so a single format covers a photo, a logo, and a transparent overlay. That is why so many sites have consolidated on it. In practice you convert a colour photo and watch it land 25–35% lighter than the JPEG, then convert a transparent badge and get a file a fraction of the PNG's size — both from the same export step. For a publisher juggling dozens of assets, having one modern target instead of two legacy ones is a real simplification, not just a saving.

Choosing your source: JPEG or PNG in, WebP out

This converter accepts either input and handles each appropriately. Feed it a JPEG photo and it re-encodes the picture into WebP's lossy mode for a smaller, equally sharp result. Feed it a PNG graphic and the transparency comes across intact. A few pointers:

  • Converting an already-compressed JPEG won't recover lost detail, but it will still trim bytes.
  • PNG-to-WebP gives the biggest wins on complex graphics that PNG handles poorly.
  • If your original PNG is a photo saved in the wrong format, expect a dramatic drop.

Either way you get a single web-ready file with no visible loss at normal viewing sizes.

Fit WebP into a real publishing workflow

WebP is the delivery format; the other tools here prepare what goes into it. If a source image is far larger than its slot on the page, scale it down first with the resizer so you aren't converting pixels nobody sees. If you need a baseline JPEG alongside the WebP — for an email client or an older system — generate it with JPEG compression and serve both. When transparency matters but you must keep a PNG fallback, PNG optimisation covers that path. Everything lives together on compressjpeg.onl, so building a small set of formats for one image is just a few uploads.

Guides about Compress to WebP

Image formats & file size What Is WebP? The Modern Image Format Explained WebP is a modern image format that often beats JPEG and PNG on size. This guide explains what it is, how it compares, and when switching is worth it. 6 min read

More compressjpeg tools

Compress JPEG Make JPEG photos dramatically smaller for email, web and uploads — without visible quality loss. Compress PNG Optimise PNG graphics to the smallest lossless size, keeping transparency and crisp edges. Resize Image Scale images down to web dimensions for an extra file-size win.

Frequently asked questions

Can WebP keep transparency from my PNG?
Yes. WebP supports a full alpha channel, so transparent and semi-transparent areas convert across from PNG without any loss.
Does every browser support WebP now?
Every current browser displays WebP natively. Only very old, unmaintained browsers lack support, which is why some sites still keep a JPEG fallback.
Will converting a JPEG to WebP improve its quality?
No. Conversion can't restore detail already discarded by JPEG. It re-packs the existing picture into a smaller file at the same visible quality.
Should I convert photos or graphics to WebP?
Both work. Photos get a moderate size cut versus JPEG, while complex graphics with transparency often shrink dramatically compared with PNG.