Knowledge Mark G
Hire Me

100% free PDF tool

OCR PDF

Read the text out of a scanned PDF and get a searchable copy back.

  • No sign-up required
  • Instant results
  • Nothing is uploaded
  • Works on any device

or drop them here

Your files are private. Everything happens in your browser. Your files never leave your device.

  • 100% freeNo hidden charges, no watermark
  • Instant resultsDone in seconds, no queue
  • Secure & privateNothing is uploaded
  • Works on all devicesDesktop, tablet and mobile

How to use the OCR PDF

  1. 1Choose the scanned PDF.
  2. 2Pick the language of the document and start recognition.
  3. 3Download the searchable PDF - the scan looks the same, but now you can search and copy its text.

About the OCR PDF

Reads the text out of a scanned PDF - a photograph of a page, where there is no text layer to extract - and hands back both the plain text and a searchable copy of the original. The searchable PDF looks identical but carries an invisible text layer underneath, so Ctrl+F finds words and the content can be copied. Recognition runs in your browser; the document is never uploaded.

What OCR does to a scanned PDF

A scan is a picture of a page, so you cannot search it, select a sentence or copy a figure out of it. OCR (optical character recognition) reads the letters in the image and adds an invisible text layer underneath. The page looks exactly the same, but now Ctrl+F finds words in it, you can copy text, and search tools and screen readers can read it.

Getting accurate results

  • Pick the document's language - recognition is noticeably better when it knows which alphabet and words to expect.
  • Scan at 300 dpi, straight and evenly lit. Shadows, folds and angled phone photos are the main cause of errors.
  • Recognition runs on your own device, so a long document takes a while on a phone and is much faster on a laptop.

Searchable PDF or editable Word?

This tool keeps the scan and makes it searchable - ideal for archives, invoices and records. If you need to edit the words, use PDF to Word with high-quality conversion, which runs OCR and returns an editable document. For the raw text only, the copy button here gives you everything that was recognised.

Frequently asked questions

Why is the first run slow?+

It downloads the recognition data for the language you picked - roughly 15 MB. Your browser caches it, so every run after that starts immediately.

How accurate is it?+

On a clean, straight scan of ordinary printed text it is very good. Accuracy falls on faint photocopies, handwriting, unusual fonts and pages photographed at an angle. Picking the right language matters more than most people expect.

What is a searchable PDF?+

The same page image you started with, plus the recognised words placed invisibly on top of it. It looks unchanged, but text can now be searched, selected and copied - which is what most people actually want from OCR.

Is my document uploaded?+

No. The recogniser runs inside your browser. The file stays on your device, which is the point when the scan is a contract or an ID.

Worth reading

All articles →
View all →