How to use this JPG to WEBP converter
- Drag your JPG photos onto the dropzone above, or press Browse files to pick them from your device.
- Set the quality slider. Around 82% suits photographs on a website, and higher suits images you will keep.
- Check the queue and remove anything you added by mistake using the cross beside its name.
- Press Convert to WEBP and let the progress bar finish.
- Compare the saving shown against each file, then download them singly or as one ZIP.
What makes this converter useful
- Shows the size before and after for every file, so the saving is a number rather than a promise.
- One quality slider that behaves the way you expect, with no hidden presets working against you.
- Handles a queue of twenty photographs in a single pass.
- Keeps the pixel dimensions exactly as they were. Nothing is resized behind your back.
- Drops the EXIF block during conversion, which removes camera and location data from the copy.
- Adds no watermark, asks for no account and sets no daily limit.
Why the web moved to WEBP
JPG was designed in 1992 for photographs, and it does that job so well that it survived three decades of competition. Its weakness is that its compression maths is thirty years old. WEBP applies techniques borrowed from video compression, predicting each block of pixels from its neighbours before storing only the difference, which lets it reach the same visible quality with meaningfully fewer bytes.
In practice a photograph converted at a sensible quality setting lands somewhere between 25 and 35 per cent smaller. On a single image that is a rounding error. On a product catalogue with four hundred photographs, or a homepage carrying a dozen large banners, it is the difference between a page that feels instant and one that visibly assembles itself.
Who needs this conversion
- Anyone whose page speed report has flagged "serve images in next-generation formats" and wants the warning gone.
- Shop owners uploading photographs to a store where every megabyte slows the product grid.
- Bloggers replacing years of accumulated JPG uploads with lighter versions.
- Developers preparing assets for an app or site where bandwidth is billed by the gigabyte.
- Anyone emailing a folder of holiday photographs that will not fit inside an attachment limit.
The one thing to understand about quality
Your JPG has already been compressed once, and that compression permanently discarded detail. Converting to WEBP compresses what is left a second time. This is called generation loss, and it is why the quality slider matters more here than on a lossless conversion.
At 82 per cent the second pass is essentially invisible on a normal photograph. Below about 70 per cent it starts to show, most obviously as softness around sharp edges and faint blotches in large areas of flat colour such as skies. If the image contains text, a logo or a screenshot rather than a photograph, keep the slider high, because compression artefacts around lettering are far easier to notice than artefacts in foliage.
Browser support is no longer a reason to wait
WEBP is supported by every current browser, including Safari since version 14 and every version of Chrome, Firefox and Edge released in the past several years. The support question that stopped people adopting it a decade ago has been settled.
What has not changed is software outside the browser. Some older desktop applications, a few print workflows and the occasional upload form still refuse WEBP. That is an argument for keeping your JPG originals, not for skipping the conversion. Serve WEBP to browsers, keep the JPG for anything else, and if you ever need to go back the WEBP to JPG converter returns you to where you started.
Nothing is uploaded
Your browser decodes the JPG with the same codec it uses to display any photograph, paints it onto an off-screen canvas and asks the canvas for a WEBP blob. Every step happens in the memory of this tab. There is no upload progress bar on this page because there is no upload.
A side effect worth knowing is that the canvas carries pixels only, so the EXIF block does not survive. Camera model, exposure settings and any GPS coordinates are gone from the WEBP copy. That is usually welcome, and if you want the same treatment without changing format the EXIF remover does it directly. To squeeze the result further, the image compressor takes over where the quality slider stops.