Pages you edit (crop or rotate) are re-processed into a high-quality image. Pages you don't touch at all are copied through exactly as they are, with no quality loss.

The system tries to detect the document's corners as soon as the file opens, but for photos with a busy background or low contrast between the document and the surface, it can miss. You can always drag the corner handles yourself before applying the crop.

Yes. There's a button to capture a photo directly from your device's camera, no separate scanner needed.

Yes, use Apply to All to copy your current filter and color invert setting to every page in the document. Brightness, contrast, and sharpen stay page-specific.

Yes, there are separate reset buttons: one restores the original perspective crop, and another resets any display changes (filter, invert, brightness, contrast, sharpen).

No. Everything runs directly in your browser. Files are never sent to a server, so your document stays on your own device.