# PDF Search Answers — DocFind

Last reviewed: September 1, 2026. HTML version: https://docfindapp.com/answers/

One honest answer per problem — including the limits no app escapes.

## [How to search for a word in a PDF](https://docfindapp.com/answers/search-for-a-word-in-a-pdf)

Start here. The find function every reader has, and the three reasons it comes up empty on a word you can see on the page. Markdown: https://docfindapp.com/answers/search-for-a-word-in-a-pdf.md

## [How to search inside many PDFs at once](https://docfindapp.com/answers/search-inside-multiple-pdfs)

Most PDF apps search one open file. What that means on a phone, the manual workaround, and when an index across the whole library is the honest answer. Markdown: https://docfindapp.com/answers/search-inside-multiple-pdfs.md

## [How to search inside PDFs on iPhone](https://docfindapp.com/answers/search-pdfs-on-iphone)

Two questions in one: searching the file you have open, and searching everything you've saved. What each route does, and where the second one needs an index. Markdown: https://docfindapp.com/answers/search-pdfs-on-iphone.md

## [How to search inside PDFs on Android](https://docfindapp.com/answers/search-pdfs-on-android)

The same two routes, Android-side — plus the script limit nobody mentions: which scanned pages can be made searchable and which can't. Markdown: https://docfindapp.com/answers/search-pdfs-on-android.md

## [PDF search not finding words that are clearly there?](https://docfindapp.com/answers/pdf-search-not-working)

The three causes, in order of likelihood — a scanned page, OCR errors, or text that isn't stored as text — and the ten-second test that tells you which one you have. Markdown: https://docfindapp.com/answers/pdf-search-not-working.md

## [How to make a scanned PDF searchable](https://docfindapp.com/answers/make-a-scanned-pdf-searchable)

A scan is a photograph, so OCR is the fix — and the decision that matters is whether the recognition runs on your own device or on someone else's server. Markdown: https://docfindapp.com/answers/make-a-scanned-pdf-searchable.md

## [Can you search inside a password-protected PDF?](https://docfindapp.com/answers/search-a-password-protected-pdf)

PDF has two kinds of password and they behave completely differently — one blocks everything, the other does not block search at all. Which is which, and what DocFind does with each.

## [Does OCR work on handwritten notes?](https://docfindapp.com/answers/does-ocr-work-on-handwriting)

The honest answer for DocFind is no, and it is worth knowing why — plus what printed scans do get, and the script limit that applies to scanned pages on Android.

## [How do I search PDFs without uploading them?](https://docfindapp.com/answers/search-pdfs-offline-without-uploading)

Indexing and OCR run on the device, the index stays there, and the iPhone app ships with no network capability at all.

## [What is OCR, and why do scanned PDFs need it?](https://docfindapp.com/answers/what-is-ocr)

OCR turns a picture of text into text a computer can search. How it works, where it runs (on your device or on someone's server — a privacy question), and what it honestly can't read. Markdown: https://docfindapp.com/answers/what-is-ocr.md

Have a question these don't answer? Tell us: https://docfindapp.com/support