Bildformat-Konverter

No. Conversion uses the canvas encoder built into your browser and runs entirely on your device — there is no server involved at any step.

The conversion itself does not lose anything — PNG stores exactly the decoded pixels. But it cannot recover detail the JPG compression already discarded, and the PNG file will usually be much larger than the JPG was.

JPG has no alpha channel, so transparent areas are composited onto a white background. If you need to keep transparency, convert to PNG or WebP instead.

For the web, usually yes: WebP is 25–35% smaller at the same visual quality and supports transparency. Stick with JPG when the recipient might use older software, or when a platform explicitly requires JPG uploads.

No. Re-encoding through canvas produces a clean file without EXIF, GPS coordinates or camera information — the same privacy benefit as the other tools in this cluster.