Kilomill

Kilomill WebP to JPG

Convert WebP to JPG

Many websites serve images as WebP, so “Save image as” gives you a .webp file that some apps and upload forms refuse. Convert them to standard JPG here.

  • No upload: runs in your browser
  • Batch + ZIP download
  • No sign-up, no watermark

Drop WebP images here

or paste from the clipboard · JPG, PNG, WebP, AVIF, HEIC, GIF, BMP · no upload

Output format
File size

For JPG, WebP and AVIF. 70–80 is hard to tell from the original. PNG uses smart colour reduction instead (see Advanced).

KB
KB

Aims at or below the maximum counting 1 KB = 1,000 bytes, so the file passes whether a site counts 1,000 or 1,024 bytes per KB.

Dimensions

Leave one box empty to keep the proportions.

%
px
Advanced
PNG output
dpi

Metadata (EXIF, GPS location, camera details) is removed from every output file.

Why you end up with WebP files

WebP is a format from Google that makes web images smaller than JPG or PNG. Websites and CDNs send it to browsers that support it, which today is nearly all of them. Outside the browser support is less universal: older photo editors, office software, printing kiosks and many upload forms still expect JPG or PNG.

WebP to JPG or WebP to PNG?

  • JPG for photos: compact and accepted everywhere.
  • PNG for logos, icons and images with transparency: choose PNG under Output format.

Animated WebP files are converted to a still image of the first frame. For logos and images with transparency, use WebP to PNG.

Questions and answers

Why can’t I open a WebP file?

Some older programs and services don’t support WebP. Converting to JPG or PNG solves it.

What happens to a transparent WebP?

JPG has no transparency, so transparent areas get the background colour set under Advanced (white by default). Choose PNG output to keep transparency.

Is quality lost?

Very little at the default quality of 82. The WebP was already lossy in most cases, so a higher JPG quality can’t add detail back; it only makes the file bigger.

Are my images uploaded to a server?

No. The images are read and compressed by code running in this browser tab, and the results are created in your device’s memory. Nothing is sent anywhere, which you can confirm in your browser’s developer tools (Network tab) while you work. See Privacy.

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