Is my JPG uploaded to convert it?

No. The conversion runs in your browser using WebAssembly and canvas APIs, so the image data never leaves your device. There is no upload endpoint in this application at all — you can watch the network tab while you convert.

How much smaller will the WebP be?

Usually 25–35% smaller at comparable quality, but it depends on the image. The result panel shows the measured saving for your specific file rather than an estimate.

Does converting JPG to WebP lose quality?

It is a lossy re-encode, so technically yes. At quality 80 or above the difference is not visible at normal viewing sizes. Because the source JPG was already compressed, keep the original rather than converting back and forth.

Do all browsers support WebP?

Yes. Chrome, Edge, Firefox and Safari have all supported WebP for several years, on desktop and mobile.

Should I use WebP or AVIF?

AVIF compresses better still, but encodes far more slowly and is supported by less desktop software. WebP is the safer default; try AVIF when every kilobyte counts.

Convert JPG to WebP

WebP usually stores the same picture in noticeably less space than JPG. Convert here and the file never leaves your device.

Free
No signup
No watermark
Files stay on your device

Drop an image hereor browseJPEG • PNG • WebP • AVIF where supported

Processed locally

Your image never leaves your computer.

How to convert jpg to webp

1
Choose your JPG
Drop the file onto the page, or browse for it.
2
WebP is already selected
Set the quality — 80 is a good default — and resize if you want to.
3
Convert and compare
Press Convert image and check the measured saving before downloading.

Why WebP is usually the right choice for the web

At matching visual quality, WebP typically produces files around 25–35% smaller than JPG. On an image-heavy page that translates directly into a faster load and a better Core Web Vitals score.

Every current browser — Chrome, Edge, Firefox and Safari — has supported WebP for years, so there is no longer a compatibility reason to avoid it on the web.

Where WebP still causes friction

Some older desktop applications and print workflows will not open it.
A few upload forms still filter on the .jpg extension alone.
Certain email clients handle it inconsistently.
If you hit one of these, convert back — WebP to JPG is a lossy step, so keep your original JPG.

Frequently asked questions

Is my JPG uploaded to convert it?: No. The conversion runs in your browser using WebAssembly and canvas APIs, so the image data never leaves your device. There is no upload endpoint in this application at all — you can watch the network tab while you convert.
How much smaller will the WebP be?: Usually 25–35% smaller at comparable quality, but it depends on the image. The result panel shows the measured saving for your specific file rather than an estimate.
Does converting JPG to WebP lose quality?: It is a lossy re-encode, so technically yes. At quality 80 or above the difference is not visible at normal viewing sizes. Because the source JPG was already compressed, keep the original rather than converting back and forth.
Do all browsers support WebP?: Yes. Chrome, Edge, Firefox and Safari have all supported WebP for several years, on desktop and mobile.
Should I use WebP or AVIF?: AVIF compresses better still, but encodes far more slowly and is supported by less desktop software. WebP is the safer default; try AVIF when every kilobyte counts.