OCR for Multi-page PDFs: Page Ranges, Big Documents, and Time Expectations

Quick answer: DocsAll PDF OCR supports page ranges (e.g. 1-3) — you never need to process a big scan in one shot. Local browser recognition takes seconds to tens of seconds per page; chunked processing beats one long run. Open PDF OCR — everything runs locally in your browser, and files never leave your device.

Steps

1. Upload the scanned PDF to the PDF OCR tool and select the language.
2. Enter a page range (1-10) or leave empty for all pages.
3. Pilot with 2-3 pages first — a wrong language setting discovered after 100 pages ruins everything.
4. Process in chunks of 10-20 pages, naming outputs per chapter; resume by range after any interruption.

Important notes

• Keep the browser tab in the foreground during recognition — background tabs get throttled.
• Local recognition is minutes-level for 100-page documents; that is the honest trade for files never leaving your device.
• Multiple separate PDF files follow the batch OCR workflow — one file at a time, consistent language, archived by filename.

Common questions

Recognition stalled halfway Browser memory pressure — refresh and continue from the breakpoint using a page range.

The page range did not take effect Use half-width hyphens (1-3), commas between ranges; check for full-width characters.