Free JPG to WebP Converter
This free tool converts JPG photos to WebP in your browser, typically removing a quarter to a third of the file size at the same visible quality. It is the cheapest way there is to make an image-heavy page load faster.
Drop images here
JPG files — add as many as you like
Runs entirely in your browser. Your images are never uploaded to a server.
How it works
- Drop one JPG or a whole folder of them above.
- Leave the quality where it is unless you have a reason. The default is chosen to be indistinguishable from the original on a photograph.
- Download the WebP, or the whole batch as a ZIP, and put them on your site.
Common use cases
- Making a photo gallery or portfolio load quickly on a phone connection.
- Getting a page's Core Web Vitals under control when images are what is dragging it down.
- Cutting the bandwidth bill on a site that serves a lot of photographs.
- Shrinking product photos for a shop, where every extra second of load time costs sales.
- Preparing a batch of holiday photos for a blog post without the page weighing twenty megabytes.
Frequently asked questions
- How much smaller is WebP than JPG?
- Google's own figure is 25 to 34 percent at equivalent quality, and that holds up well in practice for photographs. The saving comes from better prediction. WebP was derived from the VP8 video codec, which spends far more effort than JPG's 1992 design guessing what a block of pixels will look like based on the blocks around it. Only the difference between that guess and reality has to be stored, and a better guess leaves less to store.
- Does converting a JPG to WebP lose quality?
- A little, and the reason is worth knowing. Your JPG is already lossy, so detail has been discarded once. Re-encoding discards a little more from what survived, partly because the encoder cannot tell which parts of the image are real detail and which are JPG artifacts it has inherited and is faithfully preserving. At a high quality setting this is invisible on a photograph. What you should avoid is converting repeatedly between lossy formats, because every round takes another bite. Convert once, from the best original you have.
- Should I convert my whole photo library?
- For a website, yes. For your archive, no. Keep the originals in whatever they arrived in and convert copies for publishing. A converted file is a copy made for a purpose, and the moment you delete the original you have made every future decision on its behalf.
- What about transparency?
- There is none to carry across, because JPG cannot store any. If you need a transparent background you would be starting from a PNG, and our PNG to WebP converter keeps it intact.
- Will it work in everyone's browser?
- Yes, for anything published on the web today. Every current browser reads WebP, including Safari, which was the last to add it in 2020. The caveat is off the web, where email clients and older desktop software can be years behind. That is what our WebP to JPG converter is for.
- Where does the conversion happen?
- In your browser. Files are never uploaded, and a batch of a hundred is processed entirely on your own machine.
Related tools
Understand what this does
Plain explanations of what is happening to your file, and what it costs you.