JPG vs PNG vs WEBP: which format should you export?

Choosing a format is mostly a choice about what the image contains and where it will be used. PixelConvert can export all three in the browser, so you can compare a real file size before you commit.

JPG

JPG is built for photographs. It throws away detail that is hard to see in exchange for a much smaller file. It has no transparency. If you convert a logo or screenshot with flat color and sharp text, a low quality setting can leave halos around edges.

Use JPG for camera photos, hero images, and anywhere a form still requires a JPEG. In the PNG to JPG converter, start near a quality of 80 and lower it only while the preview still looks clean.

PNG

PNG is lossless. It keeps every pixel and it can store transparency, which makes it the right export for screenshots, interface artwork, and images you expect to edit again. Photographs saved as PNG are often several times larger than the same photo as JPG.

Converting a JPG to PNG with the JPG to PNG converter does not invent detail that the JPG already discarded. It only changes the container.

WEBP

WEBP covers both jobs. Lossy WEBP is often smaller than JPG at a similar visual quality, and WEBP can keep an alpha channel when you convert from PNG. Support in current browsers is solid. Older desktop tools are the usual reason to keep a JPG or PNG copy as well.

The image compressor shows the original size next to the exported size, which is more useful than guessing from the quality number alone.

A simple rule

Use JPG for photos that need broad compatibility. Use PNG for transparency and lossless graphics. Use WEBP when the destination can open it and file size matters. Crop or resize first so you are not compressing pixels you plan to throw away.