# How to search inside PDFs on iPhone — DocFind

Last reviewed: September 23, 2026. HTML version: https://docfindapp.com/answers/search-pdfs-on-iphone

**Apple ships a find tool for the PDF you have open, and a file search that Apple describes in terms of names.** Between them they answer "where is this word in this document?" well, and "which of my documents says this?" hardly at all. Below is what Apple's own iPhone guide says each built-in route does, where its pages stop short, and what fills the gap.

## Inside a PDF you have open: Preview

Apple's iPhone User Guide documents text search in the Preview app: open the PDF, tap the search button and "Enter a word or phrase in the search field." Two details are worth knowing — "If you enter a phrase, Preview searches for that exact phrase", and the search field offers **Whole Words** ("Exclude matches where the search text is part of another word") and **Match Case** ([*Open and view PDFs and images in Preview on iPhone*](https://support.apple.com/guide/iphone/open-and-view-pdfs-and-images-iph7a0cdad0c/ios), read 23 September 2026). That guide page is published for iOS 26 and iOS 27 only, so on an older iPhone the steps may not match what you see.

The Files app can also show a PDF in Quick Look ("Touch and hold the file, tap Open With, then choose Preview with Quick Look"), but Apple's Files page says nothing about searching text inside that preview ([*Find and view files and folders in Files on iPhone*](https://support.apple.com/guide/iphone/find-and-view-files-and-folders-iphe4bff8827/ios), read 23 September 2026).

## Across many PDFs: what Apple documents, and what it doesn't

- **The Files search field.** Apple's instruction is to "Enter a filename, folder name, or document type in the search field" (same Files page), and its support article puts it more bluntly: "To search for a file name, use the search field in the Files app" ([*Find files on your iPhone or iPad*](https://support.apple.com/en-us/102570), read 23 September 2026). Neither page says the field reads the text inside a PDF, so treat it as a way to find a file you can name.
- **Spotlight.** Apple lists "apps and contacts, content in apps like Mail and Messages, and even text in your photos using Live Text" ([*Search with Spotlight on iPhone*](https://support.apple.com/guide/iphone/search-on-iphone-iph3c511548/ios), read 23 September 2026). Its indexing article says the index covers "a wide range of content such as documents" and is "a local, private index that stays on your device" ([*About Spotlight indexing and search results on Apple devices*](https://support.apple.com/en-us/102321), read 23 September 2026). Neither page says whether the words inside a PDF in Files are part of that index, and Apple adds that content from other apps "appears in search results only if the app supports Spotlight indexing."
- **Notes.** The Notes app is the one place Apple explicitly promises to read inside documents: its search covers "text in scanned documents", and to search an attached PDF you open the note, tap Find in Note and "select Include Attachments" ([*Search through your notes on iPhone*](https://support.apple.com/guide/iphone/iphb8628c6b8/ios), read 23 September 2026). That works when your PDFs already live in notes; it does nothing for a folder of statements in Files, and Find in Note covers one note at a time.

## The scanned page problem

A PDF made from a camera or a scanner can be a picture of text with no text stored in it, and then Preview's search has nothing to match — the page looks full of words and the search comes back empty. [How to tell in ten seconds](https://docfindapp.com/answers/pdf-search-not-working), and [how a scan becomes searchable](https://docfindapp.com/answers/make-a-scanned-pdf-searchable).

## DocFind on iPhone

[DocFind](https://docfindapp.com/) is built for the question Apple's built-in routes leave open: one search over every PDF you have added, scans included.

- Results list the file, the page and the surrounding text, ranked, so the right hit is recognisable before you open anything; tapping one opens that page with your keywords highlighted.
- Scanned pages are recognised on the phone with Apple's Vision framework — its [*VNRecognizeTextRequest*](https://developer.apple.com/documentation/vision/vnrecognizetextrequest) is "An image-analysis request that finds and recognizes text in an image" (Apple Developer Documentation, read 23 September 2026) — and matches that came from recognition are labelled.
- Indexing, search, OCR and export run without a network connection, and your documents stay on the iPhone. There are no ads, analytics or tracking.
- Files it could not open, has not read yet, or that changed after indexing are named along with the reason.
- Pro on iPhone adds an advanced query mode (AND, OR, NOT, exact phrases, NEAR, wildcards), a regex mode, auto-OCR while charging, Spotlight indexing, and Siri and Shortcuts search. None of these exist in the Android app.
- A demo with sample documents, a scanned receipt among them, runs without any setup.

Two limits. Recognition is for printed text, not handwriting. And for scans in other scripts, Vision on iPhone handles Chinese, Japanese, Korean, Arabic and Thai, but not Hindi or other Devanagari text, so a scanned Hindi page stays unsearchable — and Hindi that a PDF already holds as text is indexed by its consonants alone, so one word can match another. On iOS, DocFind is an iPhone app.

Related: [Search many PDFs at once](https://docfindapp.com/answers/search-inside-multiple-pdfs) · [OCR on iPhone](https://docfindapp.com/answers/ocr-on-iphone) · [Search for a word in a PDF](https://docfindapp.com/answers/search-for-a-word-in-a-pdf) · [The Android version of this page](https://docfindapp.com/answers/search-pdfs-on-android)