Is your PDF actually searchable?
Last reviewed: September 2, 2026 · Markdown version
Some PDFs are text. Some are photographs of text. They look identical on screen, and only one of them can be searched — which is why "search inside this PDF" sometimes finds nothing in a document you can plainly read with your own eyes.
Drop a PDF below and this page will tell you which kind you have.
The file never leaves your browser. Nothing is uploaded, no network request carries it anywhere, and nothing is stored — the check runs on your own machine, in this page. Close the tab and it is gone.
What this page actually looked at
This is a structural check: it looks for the text-drawing instructions inside the file. It does not read your document, does not judge what it says, and cannot tell you whether the text layer is accurate — only whether one is there.
Why the character count is approximate. It counts the characters the file asks to be drawn, and some fonts encode each character as two bytes, which can roughly double the figure. Measured against Apple's own PDF text extractor on this page's test set, the count ran about 1.9× high on a document using that encoding while every verdict still matched. The presence or absence of a text layer is exact; the number beside it is an estimate, and is shown here rather than above for that reason.
What the answer means
"Has a text layer"
The words are stored in the file as text. Most PDF readers can find them, though not every mobile viewer offers a search box. If searching still fails, the problem is the search, not the document — see why PDF search stops working.
"Looks like a scan"
The page is an image. There is nothing in the file that says "this pixel is the letter A", so there is nothing for a search to match. To make it searchable, the picture has to be run through OCR — optical character recognition — which looks at the shapes and writes a text layer underneath. That is what OCR is, and how you make a scanned PDF searchable.
"Encrypted — it may still be searchable"
PDF encryption comes in two kinds and they behave completely differently. A file with a user password asks you for it before it will open, and until it is removed nothing inside can be read by anything. A file with only an owner password — restrictions on printing or copying — opens without prompting, and DocFind indexes and searches it like any other document.
This page reports that a file is encrypted but does not try to tell the two apart; doing so means attempting the decryption itself, which is more than a web page should do with your document. The quickest test is the one you can run yourself: open it in any reader. No password prompt means it will search normally.
The honest limits — ours and OCR's in general
- Handwriting is not recognised. DocFind's recognisers are built for printed text. A handwritten page will not become searchable, here or in the app.
- On Android, a scanned page in a non-Latin script — Hindi, Chinese, Arabic — will not become searchable, because the recognizer bundled with the app covers Latin script. A PDF that already has a non-Latin text layer searches normally on both platforms. The distinction is between a picture of the words and the words themselves.
- Search matches what you type. DocFind looks for the word you asked for; it does not guess at related words, so "running" will not find "run". That is deliberate — you can trust a hit.
- PDFs only. Word, Excel and plain-text files are not supported.
Or stop checking them one at a time.
DocFind searches inside many PDFs at once, and reads scanned pages by running OCR on your device. Nothing is uploaded: the index is built and stays on the phone, and the iPhone app ships with no network capability at all. iPhone and Android.