JPEG stores metadata in numbered APP marker segments scattered through the file header, before the actual image data begins. AiEraser's scanner walks every segment rather than checking a fixed list, so uncommon or vendor-specific segments don't get silently missed.
View mode reads every segment and tells you what's there, including decoding C2PA manifests spread across multiple APP11 segments into their actual claim/action data. Remove mode re-encodes the image via canvas at high quality (0.95), which discards every segment above since canvas only ever preserves pixel data.
JPEG re-encoding is a fresh compression pass — not literally byte-identical to the original — but at 0.95 quality it's not visually distinguishable at normal viewing sizes.
Try it now — drop a JPEG in and see exactly what's embedded.