PDFOCR
OCR PDF
Turn an English scanned PDF into a searchable PDF without replacing its visible pages. Download the recognised plain text separately when that is all you need.
A text layer, not a visual rewrite
The output keeps the original PDF pages and adds words using PDF rendering mode 3, so the layer is searchable but invisible. This page first checks for existing selectable text. Only a scan causes the English worker, model and one compatible core — at most 9,832,213 bytes (9.38 MiB) — to load from this site.
Choose an image-only or scanned PDF, up to 50 pages.