Convert JPG to WebP
Turn JPG (JPEG) files into WebP. The same picture usually fits into a noticeably smaller file, which makes your site or blog load faster.
- ✓ 100% Free
- ✓ No Sign-up
- ✓ No Watermark
- ✓ Client-Side Processing
- ✓ No Installation
- ✓ Batch Support
or drag & drop files here
Supported formats: JPG / JPEG / PNG / WebP
Runs entirely in your browser, nothing is uploaded
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Why convert JPG to WebP
PageSpeed Insights flagged 'Serve images in next-gen formats'. A photo-heavy page feels sluggish. WebP is the usual answer: it tends to match JPG's appearance in a smaller file, and every major browser can display it.
This page opens with the output format already set to WebP. Add your JPG files and press Convert. Everything runs inside your browser and no image is uploaded to a server.
How much smaller does it actually get?
The saving depends heavily on the source image and the quality setting. For portraits and landscapes, a 20-40% reduction at visually similar quality is common.
Already heavily compressed JPGs save far less. If the source was low quality to begin with, WebP may come out roughly the same size or even slightly larger. The tool shows the exact size change after conversion, so you can check rather than guess.
Choosing a quality value
The slider defaults to 85. For photo-driven pages, somewhere between 80 and 90 usually hits the sweet spot where the difference is invisible but the file is clearly lighter.
Keep in mind that JPG to WebP is lossy-to-lossy: WebP compression is applied on top of the artefacts the JPG already carries. Below about 70, flat skies and skin gradients start to show banding.
For images containing text, such as banners or infographics, stay at 90 or above to keep letter edges clean.
The resolution stays the same
This tool changes only the format, so the width and height match the original JPG. If a 4000 px phone photo is still too heavy as WebP, resize it to roughly 1600-1920 px on the long edge with Image Resizer first, then convert.
When you need to land under a specific file size, Image Compressor adjusts quality automatically to hit that target.
Batch conversion and ZIP download
Add many JPGs and convert them all at the same quality, which suits migrating a whole page or gallery to WebP in one pass. Processing happens one file at a time in a Web Worker.
Filenames keep their stem and swap only the extension (photo.jpg becomes photo.webp), which makes updating HTML and CSS references straightforward. Download everything as a ZIP when it finishes.
Frequently Asked Questions (FAQ)
How much smaller is WebP than JPG?
It varies with the source and the quality setting, but photographs commonly shrink by 20-40%. Already heavily compressed JPGs may barely change.
Does converting to WebP reduce quality?
WebP is lossy, so quality depends on the slider. At the default of 85, photographs look essentially identical. Use 90 or above for images that contain text.
Do all browsers support WebP?
All major browsers, including Chrome, Edge, Firefox and Safari, display WebP. Some older applications and systems still cannot open it, so keep a JPG copy for distribution.
Does the resolution get smaller?
No. Only the format changes, so the width and height match the original JPG. Use Image Resizer to change dimensions.
Can the WebP end up larger than the JPG?
Yes, if the source JPG was already heavily compressed. The size change is shown after conversion so you can verify the result.
Are my images uploaded to a server?
No. Decoding and WebP encoding happen entirely in your browser via Canvas and a Web Worker.
Can I convert several JPGs at once?
Yes. Add them all, convert in one pass, and download the results as a ZIP.