Convert JPG to WebP
Around 30% smaller photos for the web, converted on your device.
Done
Open the network tab. It stays empty.
Add files and run the tool to see every request this tab makes.
Your files are processed on this device and never sent to a server. Reload the page to clear everything from memory.
WebP photos are typically 25 to 35 percent smaller than JPGs of the same visual quality, which is why image-heavy sites serve WebP. If you are preparing photos for a website or an online shop, converting from JPG is the standard step.
Because both formats are lossy, do the conversion once, from the best JPG you have, rather than converting a WebP back to JPG and then to WebP again. Quality 80 to 85 is a good default for photos on the web. The whole batch is encoded by your browser in your tab.
How it works
- Drop your JPG files onto the page, or tap to pick them. Batches are fine.
- Pick a quality. 80 to 90 is a good range for photos; go higher for screenshots with text.
- Download each WebP, or all of them as one zip.
In your browser, not on a server
Your browser already knows how to decode JPG, PNG, WebP, AVIF and SVG. Stayput draws each image onto an off-screen canvas and asks the browser to encode it again in the format you picked. HEIC input goes through the libheif WebAssembly decoder, and JPEG XL (or AVIF, in a browser without native support) through the Squoosh decoders compiled to WebAssembly, fetched once as program files and cached. Nothing here needs a server because nothing here is beyond what a browser can do on its own.
Compared with upload-based tools: Online converters upload your image, convert it on their machine and hand it back through an ad-covered download page. This does the same conversion with the same codecs, on your device, in less time than the upload.
Verify it yourself. Load this page, turn off Wi-Fi or switch to airplane mode, and run the tool. Or open your browser's developer tools (F12, or Cmd-Option-I on a Mac), pick the Network tab, and watch it while you convert. The panel above does the same count for you.
Questions
Does JPG to WebP lose quality?
A little, as any lossy re-encode does. At quality 85 it is not visible in normal viewing. Keep the original JPG if you will need to edit later.
Is the EXIF data kept?
No. Browsers strip EXIF when encoding WebP. Location data is therefore removed, which is usually what you want for images going onto a website.
How many photos can I convert at once?
As many as your device can hold in memory. They are processed one at a time so the page stays responsive.
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Guides
- What is EXIF data, and what does a photo reveal?The information stored inside a photo file, what it can give away, and how to see and remove it.
- How to reduce an image's file sizeTwo settings do almost all the work. Here are the numbers to use for email, forms, listings and websites.
- JPG, PNG, WebP or HEIC: which image format to useA practical rule for each job, and the conversion to get there.