A scan or a photographed document has no text of its own, only a picture of it. Its text is read on the phone, when you ask for it.
01 · How to copy from a scan
- Long press the text on the page.
- Reading the text… shows at the top for a second or two.
- The word under your finger is selected. From there, it works like any other page: see Copying text.
02 · What happens
- Only the page you long press is read, and only then. Nothing runs when you open or scroll a PDF.
- The reading is done by Tesseract, on the phone, for English and Romanian. The models are inside the app; no picture is sent anywhere.
- The page is first evened out: made grey, its uneven lighting flattened, its contrast stretched. Then it is read two ways, and the reading that finds more text is kept.
- A page read once stays read while the PDF is open.
03 · What to expect
- Clean scans read almost letter for letter. A dark or blurred photo reads less: some characters can come out wrong.
- Handwriting is not read.