You open a PDF expecting to copy a paragraph, but when you click and drag, nothing highlights. The cursor slides across the page as if the text isn't there. You try Cmd+A to select all — nothing. The document looks perfectly readable, but it's effectively a picture of text, not actual text.
Why Some PDFs Won't Let You Select Text
This happens with scanned documents, government forms, older academic papers, and PDFs exported from certain design tools. The pages were created from images — either scanned from paper or flattened during export — so the PDF contains raster layers rather than text layers. Preview, Adobe Reader, and every other PDF viewer see the same thing: pixels arranged to look like letters, with no underlying character data to select.
Some PDFs also have copy protection enabled. The creator set a permission flag that prevents text selection, even though the text layer exists. Standard PDF readers respect this flag, leaving you unable to copy anything.
Read the Text Right Off the Screen
Optic sidesteps both problems. Because it reads characters from your screen rather than from the file's internal structure, it doesn't matter whether the PDF has a text layer, is a scanned image, or has copy restrictions. If you can see the text on your display, Optic can read it.
Scanned Documents
Open the scanned PDF in Preview, zoom to a comfortable reading size, activate Optic, and drag over the text you need. It recognizes printed characters from the scan and copies them as editable text. Works with old typewritten documents, scanned receipts, and photographed pages.
Protected PDFs
For PDFs where the text layer exists but selection is locked, Optic reads the rendered output on screen. You get the same text without fighting permission flags or hunting for PDF-unlocking tools.
Multi-Page Extraction
Scroll through the document and make selections on each page. Every capture is saved in Optic's menu bar history, so you can work through a long scanned document page by page and collect all the text you need.