JPG to WebP
Convert JPG photos to WebP in your browser for roughly 25–30% smaller files at the same visual quality. Batch conversion, nothing uploaded.
Runs in your browser
Pick one or more images. They are converted on your device.
The saving is real, and so is the catch
At matched visual quality, WebP files run roughly 25–30% below JPG. On a page carrying a dozen photographs, that is the single cheapest performance improvement available — no layout change, no code change.
The catch is generation loss. Your JPG has already been through lossy compression once; converting it to WebP compresses the result a second time, and the two sets of artefacts do not cancel out. Convert from the original photograph where you still have it. Where you do not, keep the quality high — 0.85 or above — so the second pass has little left to discard.
Choosing a quality
WebP and JPG quality numbers are not the same scale. As a rough guide for photographs:
- 0.9 — indistinguishable from the JPG, around 20% smaller.
- 0.8 — the usual choice. Differences are visible only in a side-by-side comparison at full size.
- 0.6 and below — smudged detail in foliage, hair and skin texture.
Keep a JPG for anything that leaves the web
Every current browser reads WebP, but email clients, older office suites and some print workflows still do not. If the image is going into an attachment or a document rather than a web page, JPG remains the safer format.
Your files stay here
Conversion happens in your browser, and nothing you pick is uploaded.