image converter

One image.
Three formats, and what each one costs.

Drop in a PNG, JPG, WebP or SVG and get it back as PNG, JPEG and WebP at the same pixel size — with the byte size of each, measured on your file rather than on an average. Conversion runs on this page, using WebAssembly; the image never leaves your device.

Drop an image here

PNG, JPG, WebP or SVG · up to 8192px on the longest side

Convert to

PNGLossless. Keeps transparency, and is usually the largest of the three.JPEGLossy, and has no transparency — anything see-through is flattened onto white.WebPLossy, keeps transparency, and is read by every browser released since 2020.

QualityOne setting for JPEG and WebP, not one each. PNG is lossless and ignores it.

Output

Behind transparencyJPEG has no transparency, so anything see-through is flattened onto this colour. PNG and WebP keep theirs and ignore it.

Keep metadataOff by default: EXIF, ICC profiles and comments are bytes nobody asked for, and a photograph carries where it was taken. Turn it on to keep your camera data or copyright. The orientation tag is dropped either way — the picture is already turned the right way up, and keeping the tag would turn it again.

What each format cost

PNG
JPEG
WebP

Nothing converted yet. Drop a file above and all three sizes appear here.

What it looks like

Drop a file above and it appears here, at full size.

Questions

Which of the three formats should I use?

Whichever comes out smallest without looking worse, and the page measures all three on your own file rather than quoting an average, because the answer changes with the picture. A flat illustration and a photograph of the same size rarely agree about it.

Does the file leave my device?

No. The conversion runs in your browser on a WebAssembly build of libvips, so the image is read, re-encoded and downloaded on your own machine. There is no upload request to watch for, and nothing to delete afterwards.