It changes the wrapper.
A file format is the way the same underlying media is packaged and encoded. Converting changes compatibility and storage behaviour more than it changes the subject itself.
Smart / Local Tools
Remove a product background.
Cut out a product, choose transparent, white or custom colour, and export it on an original or square canvas.
Stays on your deviceYour image stays in this browser tab. The background-removal model downloads to your device and runs locally.
Background
Export shape
Private by design: your selected image stays in this browser tab. The open general background-removal model is downloaded from Hugging Face on first use and runs locally on your device.
Useful to know
Four things worth knowing.
Conversion is not enhancement.
Conversion is not enhancement. Re-encoding a poor source cannot restore missing detail, and some formats lose transparency, animation or metadata.
Check what the format dropped.
Automatic results still need a human check around edges, text, faces and small details.
Choose for what happens next.
Choose the format for what happens next: JPG for ordinary photos, PNG when transparency matters, WebP/AVIF for web delivery, and keep the source if you may edit again.