Converting JPG to WebP typically cuts file size 25–35% at matched visual quality using WebP's more efficient lossy compression. For web delivery the savings compound across a page: a 2 MB hero image becomes 1.4 MB, a 300 KB thumbnail becomes 200 KB.
Drag & drop image files here, or browse
Drop your JPG files here
Transcoding lossy-to-lossy means a small additional quality loss on top of the original JPG compression. Encoding WebP at quality 80 from a quality 85 JPG usually produces output indistinguishable from the source. Going too low on WebP quality can reveal the JPG's underlying artifacts more clearly.
WebP is supported in every major browser (Chrome, Firefox, Edge, Safari 14+). Image editors handle it widely now; some older design tools still need plugins. Native OS support is good on modern Windows, macOS, and Linux.
JPG (JPEG) is a 1992 lossy photo format that became the default way to store photographs on the web. It uses a discrete cosine transform plus quantization, tuned so that errors fall where human vision is least sensitive. No transparency, no animation, but excellent for photos at 70–90% quality.
WebP is Google's 2010 image format based on the VP8 video codec. It offers lossy and lossless modes, full alpha transparency, and animation in a single container. At matched quality it's typically 25–35% smaller than JPG or PNG. Every major browser has supported it since 2020.
Typically 25–35% smaller than the JPG at matched perceived quality. The exact ratio depends on content: photos with lots of detail save less, images with large smooth regions save more.
Encoded at quality 80+ from a good-quality JPG, the difference is invisible to nearly all viewers. Going below quality 70 can start revealing the JPG's existing artifacts and adding new WebP ones.
JPG (JPEG) is a 1992 lossy photo format that became the default way to store photographs on the web. It uses a discrete cosine transform plus quantization, tuned so that errors fall where human vision is least sensitive. No transparency, no animation, but excellent for photos at 70–90% quality.
WebP is Google's 2010 image format based on the VP8 video codec. It offers lossy and lossless modes, full alpha transparency, and animation in a single container. At matched quality it's typically 25–35% smaller than JPG or PNG. Every major browser has supported it since 2020.
Yes. The converter runs entirely in your browser using WebAssembly. Your images are never uploaded, never sent to a server, and never leave your device.
There's no hard limit, but because everything runs in your browser you're bounded by available memory. Very large images (over a few hundred megapixels) can hit browser memory limits. Process in smaller batches if you run into issues.