Convert JPG to WebP
Get smaller files than JPEG at the same visual quality.
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How it works
Add your images
Drag and drop, paste, or pick files. They upload over an encrypted connection.
Pick a quality or a target size
Use the quality slider, or tell it exactly how many KB or MB you need.
Download
Save each file, or grab them all at once as a ZIP.
WebP generally produces 25 to 35% smaller files than JPEG at an equivalent visual quality, which is why many websites convert their images to it. This tool decodes your JPEG and re-encodes it as WebP at the quality level you choose, with no sign-up needed.
WebP is supported by every current browser, so for most uses it's a safe, drop-in replacement for JPEG. The one case to watch for is older software that expects a JPEG file specifically, such as some desktop photo tools or very old devices.
The conversion runs on our own servers in the EU; the original JPEG is not kept, and you can compare the result against the source before deciding to keep it. If the converted file isn't meaningfully smaller, the source JPEG may already be heavily compressed; WebP's advantage shows most on higher-quality originals. Camera details and location stored in the JPG are dropped during conversion unless you choose to keep them.
Where the saving over JPEG comes from
JPEG dates from 1992 and treats every block of a picture on its own. WebP, announced in 2010 and built on a video codec, first predicts each block from the ones above and to the left of it and then stores only what the prediction got wrong. On a sky, a wall or a blurred background the prediction is nearly right and there is very little left to store. WebP also smooths the joins between blocks while decoding, so at low sizes it turns soft where a JPEG turns blocky.
The two quality scales are not the same. This page starts at 80, which on most photos looks like a JPEG saved at about 85.
Putting WebP on a website
Every current browser displays WebP, so on a new site you can use the files directly in ordinary image tags. If you still want a safety net for very old browsers, the HTML picture element lets you list the WebP first and keep the JPG as a fallback; the browser takes the first one it understands. WordPress has accepted WebP uploads since version 5.8, and most site builders and shop platforms take it as well.
Convert a whole folder in one batch and download the ZIP. File names are kept, with -min added, so matching the new files to the old ones is easy.
What a JPG to WebP conversion cannot do
It cannot bring back detail the JPEG already lost. Blocks and smears in the source are part of the picture now, and the new encoder spends bytes reproducing them. Start from the best JPG you have. Two technical limits are worth knowing too: a WebP cannot be wider or taller than 16,383 pixels, and it has no CMYK mode, so a print-ready CMYK JPEG is converted to ordinary RGB.
Frequently asked questions
Is WebP as good quality as JPEG?
At the same file size, WebP usually looks noticeably better; it's a newer, more efficient format.
Will every browser display WebP?
Yes, all current major browsers support it fully.
Does converting to WebP keep my photo's resolution?
Yes, unless you also turn on Resize.
Can I convert several JPGs to WebP at once?
Yes, add them all as a batch and download individually or as a ZIP.
How do I open a WebP file on my computer?
Drag it into any browser. Recent versions of Windows Photos and macOS Preview open it too, as do current releases of Photoshop, GIMP and Affinity Photo.
Should I pick lossless WebP for a JPG?
No. Lossless would faithfully store every artefact of the JPEG and the file would come out several times larger than the JPG itself. Lossy WebP is the right choice for anything that started as a photo.