# When English OCR on a PDF works

OCR is the optional box on PDF to Word, not a separate promise that any scan becomes a perfect document. Leave it off when the PDF already has real text. Turn it on only for pages that are pictures of paper, and only for English.

## When you need it

If you can highlight words in a normal viewer, you do not need OCR. The text layer is already there, and the ordinary extract is more accurate than a guess from pixels.

If a scanned contract comes out empty, the page is a picture. Tick English OCR. The engine is Tesseract, loaded when you ask for it. It needs a network connection to download. The page is marked in the DOCX with [English OCR] so you can see which text was guessed.

## What it misses

- Small type. Footnotes and fine print are often incomplete.
- Handwriting. This is a printed-English engine, not a handwriting reader.
- Any language other than English. Do not expect a usable result for a German, Spanish, or Chinese scan.
- The layout. OCR does not rebuild columns, tables, or the page design. You still get lines of text. PDF to Excel will not OCR a scanned table either.

## The file:// block

OCR does not run when the browser opens the tool as a local file (file://). Chrome blocks the worker in that situation. Selectable text on a digital PDF still works. OCR works on the live site, where the page is served over https.

Double-clicking a saved copy of the HTML and expecting OCR is the usual way to hit this. Use the page on pctoolsonline.com. A local preview of the rest of the tool, including copying a real text layer, can still succeed. Only the OCR worker is blocked.

The same 80-page cap and the same password refusal apply. OCR does not unlock a protected file, and it does not read past the cap.

## A sane order

Try the extract with OCR off. If the pages you care about are empty and they are printed English, turn OCR on and read the result as a draft. Correct names and numbers by hand. Do not file the OCR output as a certified copy of the original.

If you compress the scan first, you still have a picture, only a softer one. OCR can still run, but softer small type is harder to read. Prefer the original scan.

A mixed PDF is common: page 1 is a digital cover with real text, pages 2 and 3 are scanned attachments. Leave OCR on only if you accept that the digital page is still read from its text layer and the picture pages are guessed. The [English OCR] marker shows which pages were guessed. Check those pages against the scan. Account numbers and dates are where a wrong character matters.

The engine is English. A printed Spanish or German page will produce something, and that something is not a translation and not a reliable transcript. Do not turn the box on to 'see what happens' and then paste the output into an email as if it were the document.

## Questions

### Should I leave OCR on for every PDF?

No. Digital text is cleaner without it. Use OCR for picture-only English pages.

### Why does OCR fail when I open the HTML from my desktop?

The worker is blocked on file://. Use the live site.

### Will it read a handwritten note?

No. Handwriting, small type, and languages other than English are outside what this OCR is for.

Tool: https://pctoolsonline.com/tools/pdf-to-word.html