Convert JPG to WebP Online
Convert a JPG image to WebP. WebP is designed for the web — at the same quality, files are noticeably smaller than JPG. Conversion is local and instant.
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Drop an image here, or click to browse
JPG, PNG, WebP · Max 50 MB per file
Your image stays on your device. This tool runs entirely in your browser. Your file is never uploaded to our server.
How do you convert a JPG to WebP?
Converting a JPG to WebP here is a three-step loop: drop the file, set the quality, and download. The tool decodes your JPG and re-encodes it as WebP, the format that typically shaves 25 to 35 percent off a JPG at the same visual quality, and both formats are preselected so there is no picker to manage. The encode runs in your browser through the Canvas API, never on a server. To make the saving concrete: a 420 KB JPG photo dropped in and encoded at quality 80 percent usually lands around 280 to 320 KB, with no visible change at normal screen sizes.
- 1Drop or select a JPG. Files up to 50 MB are accepted.
- 2Drag the quality slider and watch the estimated file size update.
- 3Check the before and after preview to confirm the visual difference.
- 4Download the WebP. Your original JPG is never modified.
How much smaller will the WebP be?
The saving is not a fixed number, because lossy encoders spend their budget on detail and noise. As a rule of thumb, WebP runs 25 to 35 percent smaller than JPG at the same quality, and the gap grows on flat graphics. A 1.1 MB screenshot often lands around 500 to 600 KB as WebP, while a photo full of fine texture may only drop 20 percent. The honest number comes from the preview: try quality 80 percent, look at the before and after, then step down until the size fits your use case.
- Screenshots and UI graphics with flat color shrink the most.
- Photos with smooth gradients compress well at quality 70 to 85 percent.
- Images full of noise or fine texture shrink the least and show artifacts soonest.
Common use cases for JPG to WebP conversion
Cutting page weight on a content site
A blog with 30 JPG images averaging 400 KB carries 12 MB of images. Converting the set to WebP at quality 80 percent brings each file to roughly 280 KB and the page total to 8.4 MB, a 30 percent cut that shows up directly in load time and bandwidth cost.
Speeding up a product catalog
An e-commerce grid with 200 product JPGs at 600 KB each loads 120 MB of imagery. Re-encoded to WebP at 450 KB each, the catalog drops to 90 MB, and shoppers on mobile data see every image appear noticeably faster.
Preparing images for a CDN
Many CDNs serve WebP automatically when the browser supports it, but they need a WebP source to do the conversion cleanly. Uploading a 2 MB hero JPG as a 1.4 MB WebP instead gives the CDN less to transform and store, and often improves the time to first byte on the served image.
Email newsletters
Marketing emails with heavy JPGs load slowly on phones and can be clipped by mail clients. A newsletter header that is 850 KB as JPG drops to 600 KB as WebP, and with modern clients rendering WebP inline, the message opens faster without losing visual punch.
WebP versus JPG: what actually changes?
Both formats are lossy and both come with a quality slider, so the workflow feels the same. The difference is the encoder: WebP gets more visual quality out of each byte, which is why the same photo looks identical at a smaller size. That said, WebP is the newer of the two and a few old tools still refuse it. If you are sending a file to software that predates WebP support, or to a partner who asks for JPG specifically, keep the JPG. For anything served on the web, WebP is the standard choice.
What quality setting should you use?
- Avatars and thumbnails: 50 to 70 percent. The image is viewed small, so the eye tolerates more compression.
- Blog and product images: 75 to 85 percent. Detail holds up well at normal screen sizes.
- Photos you might zoom into: 85 to 95 percent. Keeps fine texture intact at the cost of a larger file.
Why convert in the browser?
Every image processed on this page is handled by the Canvas API inside your browser. Nothing is uploaded, no account is required, and there is no queue to wait in. That makes the tool a sensible choice for client assets, internal screenshots, and personal photos where sending the file to a third-party service would be a problem. It also keeps conversion instant: processing starts the moment the file is selected and usually finishes in under a second.
Frequently asked questions
Are my images uploaded to a server?
No. Everything runs locally in your browser with the Canvas API, so the file never leaves your device. There is no upload step, no account, and no processing queue.
Is WebP always smaller than JPG?
At the same visual quality, usually yes, by 25 to 35 percent. The exact saving depends on the image: high-detail photos compress less, flat graphics compress more. The preview shows the real number for your file.
Does WebP look the same as JPG?
At equal quality settings the difference is hard to spot with the naked eye. WebP often handles edges and gradients slightly better, which is why it can use a lower setting and still look as good.
Is WebP supported by all browsers?
Yes. Chrome, Firefox, Safari, and Edge all render WebP without plugins, and Safari has done so since 2020. For older browsers you can keep a JPG fallback alongside the WebP.
What if my JPG has no transparency to preserve?
Nothing is lost. JPG does not store transparency, so the WebP simply has none either. The conversion only re-encodes the pixels the JPG already contains.
Can I control the file size?
Yes. The quality slider trades size against detail. Lower settings produce smaller files with more visible artifacts, so check the preview and stop at the lowest setting that still looks right.
What is the biggest JPG I can convert?
Input files are limited to 50 MB. The ceiling exists because the tool decodes the full image into memory in your browser, and anything much larger makes the page sluggish. Most photos are far below the limit.