Convert JPG to WebP
Your files stay on this device. Nothing is uploaded, nothing is stored on a server.
Drop your files here
or pick them from your device
How it works
- Drop your .jpg or .jpeg files onto the bench, or pick them from your device.
- Choose a quality level. 85 is a good starting point for photographs.
- Press Convert, then download the WebP files one at a time or as a .zip.
Converting JPG to WebP is a slightly awkward operation, and it is worth understanding why before you do it in bulk. Your JPG has already been through one round of lossy compression. WebP is also lossy. Re-encoding means a second round on top of the first, and the two compressors make different decisions about what to discard, so the artifacts do not line up neatly — they accumulate. Nothing you do here improves the picture.
What you get in exchange is size. WebP is a more capable compressor than JPG, and for typical photographs it reaches the same perceived quality in roughly a quarter to a third less space. On an image-heavy web page that adds up quickly, which is why this conversion is worth doing despite the double compression.
The judgement call is the quality slider. Set it too low and you are stacking fresh artifacts on old ones, which looks noticeably worse than a single pass would. Around 85 is a sensible default for photographs. If your JPG was already heavily compressed — a small file for its dimensions, visible blockiness in flat areas — go higher, or accept that this particular image is not going to get much better treatment than it has already had.
Where possible, the better move is to skip the middle step: go back to the original photo or the master file and export WebP directly from that. One round of compression always beats two. This tool is for the common case where the JPG is all you have.
Questions people ask
- Is it worth converting JPG to WebP?
- For images on a website, usually yes — expect roughly a quarter to a third less file size at similar visual quality. For images you email, print or archive, no: JPG opens everywhere and WebP does not.
- Does the picture get worse?
- Slightly. You are compressing an already-compressed image, so a second round of detail loss is added to the first. At quality 85 and above it is hard to see on a normal photograph.
- Which quality setting should I use?
- Start at 85 for photographs. Raise it if the source JPG was already heavily compressed, since low settings compound existing artifacts. Below 70 the damage becomes visible on most images.
- Is there a better way than converting?
- Yes, if you still have the original. Exporting WebP straight from the camera file or the design master means only one round of compression instead of two, and the result is noticeably cleaner at the same file size.
- Will the WebP work everywhere?
- In browsers, yes — support is universal in current versions. Outside the browser it is patchier: some email clients, older desktop software and a few upload forms still reject WebP files.
- Are my photos uploaded?
- No. The decoding and re-encoding happen inside this page in your browser. Nothing is sent to a server and nothing is kept afterwards.