About this tool
Convert images between PNG, JPEG, and WebP right in your browser, for free. There's no upload and no server involved. Your file stays right where you left it.
JPEG has no concept of transparency at all -- there's no alpha channel in its specification, unlike PNG and WebP -- so converting a transparent image to JPEG fills the transparent areas with a solid color. WebP is unusual among the three in that it can go either way: like JPEG, it can compress lossy for a smaller file, but like PNG, it can also encode a fully lossless image.
Frequently asked questions
Why does converting to JPEG remove transparency?
The JPEG format has no alpha channel in its specification at all, unlike PNG and WebP. Converting a transparent image to JPEG has to put something in place of the transparent areas, since JPEG has no way to represent "no color" there.
Can WebP be both lossy and lossless?
Yes -- WebP supports both modes, unlike JPEG (always lossy) and PNG (always lossless). That flexibility is part of why WebP files are often smaller than an equivalent JPEG or PNG at similar quality.
Will converting to JPEG reduce image quality?
Yes, since JPEG is always a lossy format -- some detail is discarded during encoding. Converting to WebP or keeping the original format avoids that loss if preserving exact quality matters more than file size.
Does this resize the image?
No -- the pixel dimensions stay exactly the same; only the file format changes. Use the transform tool if you need to change the actual width or height.