About this tool
A scanned contract, a phone-photo receipt or an old letter saved as a PDF is really just pictures of pages. You can read it, but Ctrl+F finds nothing, you can’t copy a sentence, and document search tools treat it as blank. This tool reads the words on each page with OCR (optical character recognition) and writes them back as an invisible text layer lined up word by word with the scan.
The result looks identical to your original — the pages are not redrawn or re-compressed — but now you can search it, highlight and copy text, and paste quotes into an email. Pages that already contain real text are spotted and skipped, so mixed documents don’t end up with doubled text. You can also save everything that was read as a plain .txt file.
Reading happens on your device with Tesseract, the open-source OCR engine, using the same language files as our Image to Text tool. They load from this site once and your browser keeps them. Your PDF is never uploaded, which matters when the scan is a passport, a medical record or a bank letter.
How to use Searchable PDF (OCR)
- Tap “Choose a PDF” or drop your scanned file onto the box.
- Pick the languages used in the document — up to three. Your browser’s language is chosen for you.
- Optional: choose Faster, Recommended or Small print, and type the pages to read, such as 1-5, 9.
- Press “Make searchable” and watch each page tile fill in. Press Cancel to stop and keep the pages already read.
- Press “Download searchable PDF”, or “Download text (.txt)” for the plain text.
A 12-page scanned tenancy agreement: leave English ticked, press Make searchable, and about a minute later the downloaded copy lets you search for “deposit” and jump straight to clause 7.
Features
- Invisible text placed word by word over the scan, so search hits and highlights land on the right words.
- The original pages are kept untouched: no re-drawing, no blur, no change in look.
- 19 languages including Hindi, Arabic, Chinese, Japanese, Korean and Russian, up to three at once.
- Skips pages that already have real text, with an option to read them anyway.
- Page range box for reading only the pages you need.
- Three detail levels: Faster, Recommended (300 DPI) and Small print (400 DPI).
- A tile for every page showing waiting, reading, done, skipped or failed, plus overall progress and Cancel.
- Plain-text export of every chosen page, with page headings.
- After saving, the new file is opened by a PDF reader and searched to prove the text is really there.
Tips and good to know
- Straight, well-lit scans read best. Turn sideways pages the right way up with Rotate PDF first.
- Use “Small print” for footnotes, receipts and dense forms; it is slower but catches tiny text.
- Only tick the languages actually in the document — extra ones slow reading and can cause odd guesses.
- Handwriting is not read reliably; OCR is built for printed text.
- Check names, numbers and amounts in the text export before relying on them. The certainty figure in the result tells you how clearly the pages read.
Frequently asked questions
Is my PDF uploaded to a server?
No. The pages are drawn and read in your browser on your own device. Only the language files are downloaded, from this site, and nothing about your document is sent anywhere.
Will my PDF look different afterwards?
No. The original pages are kept as they are, and the text is added on top in invisible mode. The file usually grows by only a few kilobytes per page.
Is it free? How many pages can it do?
It is free with no sign-up or watermark, and there is no page limit. Each page takes a few seconds, so long documents take a while; very large scans are limited by your device’s memory.
Does it work on a phone or offline?
Yes, in Safari or Chrome on iPhone and Android, though it is slower than on a computer. Once the page and language files have loaded, reading itself needs no connection.
Why was a page skipped?
It already had at least a line of real text, so it was probably made digitally rather than scanned. Tick “Also read pages that already have text” to read it anyway, which adds a second copy of the text.
Can it open a password-protected PDF?
Not directly. Remove the password with Unlock PDF first, make it searchable here, then protect it again with Protect PDF if you need to.
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