To search for a word in a PDF, open the file and press Ctrl + F on Windows or Command + F on Mac. Type your word or phrase, then use the next and previous arrows to move between matches. On a phone, open the PDF and look for Search or Find in page.
If the word is right there on the page but search finds nothing, the PDF may be an image-only scan. I’ll show you the quick search methods first, then how to check the file and make scanned text searchable.
Key takeaways
- You can search a text-based PDF in a browser or free PDF reader without converting it.
- Use Ctrl + F on Windows or Command + F on Mac. Search inside the open document, rather than the folder or website containing it.
- An image-only scan needs optical character recognition, usually called OCR, before ordinary text search can work.
- For a phrase or a folder full of PDFs, check the reader’s matching and advanced-search options.
- Keep private documents on your device where possible. You don’t need to upload a PDF to a random website just to find a word.
How to search a PDF in Chrome or Microsoft Edge
If you’re already reading the PDF in your browser, start here. Make sure the actual PDF is open, not just the download page or a picture of its cover.
- Open the file. Click its PDF link, or right-click a downloaded PDF and choose Open with, then Chrome or Microsoft Edge.
- Open Find. Press Ctrl + F on Windows or Command + F on Mac.
- Enter a short search term. A distinctive word is a good starting point. You can narrow it to a phrase after finding the right section.
- Move through matches. Use the arrows beside the search field. Check the surrounding sentence so you know you’ve found the right occurrence.
- Close Find. Press Escape when you’re finished.
Microsoft’s shortcut reference confirms the Find shortcut for Edge. The position and appearance of the search box can change between browser versions.
If your search highlights the surrounding website instead of the PDF, open the PDF in its own tab or download it and open the saved file. Embedded viewers sometimes have their own search button.
How to search for a word in Adobe Acrobat Reader
Open your PDF in Acrobat Reader, then press Ctrl + F or Command + F. Enter the word and move through the highlighted matches with the search controls.
Open the three-dot menu beside the search term if you need to narrow the results:
- Whole words: useful when you want “rent” without matches inside “rental”.
- Case sensitive: matches the capitalisation you typed.
- Include comments or bookmarks: expands the places being searched.
The controls described in Adobe’s current search guide may look different in older Acrobat layouts. Basic Find searches the document you have open; it isn’t the same as searching your cloud file library.
How to search a PDF on Mac with Preview
You can use Preview if you don’t want another PDF app. Open the file in Preview, then type a word or phrase in the toolbar’s search field. If you can’t see the field, make the window wider.
Use the next and previous buttons to move between results. Page Order sorts them by page; Search Rank sorts by the number of matches. These change how results are organised.
In Apple’s macOS Tahoe 26 instructions, typing a phrase searches for that exact phrase. To find any of its words instead, click the magnifying glass and choose Any Match. Check your version’s search menu if the results are broader than you expected.
How to search words in a PDF on Android
Chrome can search a PDF opened from a website on supported Android devices. Google’s instructions require Android 12 or later for these built-in PDF features.
- Open Chrome and tap the website’s PDF link.
- With the PDF open, tap the three-dot More menu.
- Choose Find in page and enter your word.
- Tap the up or down arrow to move between matches.
In Incognito, Chrome prompts you to download the PDF instead. If your device opens another reader, use that app’s Search button, or choose a PDF reader from Open with.
Acrobat Reader is another option: open the PDF, tap Search in the top menu, type your term, then tap Go on the keyboard. Use the navigation arrows to view the other matches.
How to search a PDF on iPhone or iPad
Use Apple’s built-in Preview app
If your iPhone or iPad has Apple’s Preview app, you can search there without installing another PDF reader. These steps follow Apple’s iOS 26 and iPadOS 26 guides; controls can differ by version.
- Open Preview. Use Recents or Browse to find your PDF, then tap the file.
- Inside the document, tap the Search button.
- Enter a word or phrase. A phrase searches for those words together in the order you entered them.
- Use the next and previous result buttons to move between matches.
- Tap Done to close the results.
For narrower results, open Search Options in the search field. Whole Word excludes matches inside longer words, while Match Case checks capitalisation.
Apple documents this in its iPhone Preview guide and iPad Preview guide. Open the PDF before searching so you look inside its pages rather than browsing filenames.
Use Acrobat Reader on iPhone or iPad
If Preview isn’t available, or you already use Acrobat Reader, open the PDF in Acrobat and follow these steps:
- Open your PDF in the Acrobat app.
- Tap Search in the top menu.
- Type the word or phrase and tap search on the keyboard.
- Use the arrows at the top right to move through highlighted results.
These mobile steps follow Adobe’s Android and iOS instructions. App layouts can differ, so look for the magnifying-glass search control if the label isn’t shown.
If you’re creating a document first, our guide to making a PDF on iPhone covers ways to save one. A PDF made from photos may still need text recognition before you can search its contents.
Why you cannot search for a word in a PDF
“No results” doesn’t always mean the word is missing. Before changing apps or paying for a tool, work through these checks.
- Search a word you can see. Choose a short, distinctive word on the current page. This separates a file problem from a search for wording that isn’t actually there.
- Check the search scope. Are you searching the open document, the website around it, or a list of filenames?
- Relax the options. Turn off case-sensitive or whole-word matching, and try one word instead of a long phrase.
- Check the text layer. Try selecting a few words and copying them into a plain-text editor. An image-only page or garbled copied text is a clue that text recognition or encoding needs attention. Selection alone isn’t a perfect test because permissions can also restrict copying.
- Try another trusted viewer. If the same visible word fails in both readers, concentrate on the PDF itself. Ask the sender for an accessible or freshly exported copy if needed.
A PDF can also mix normal text pages with scanned pages. Being able to search page one doesn’t prove every page is searchable.
For phrases split across lines, hyphenated words, or imperfect OCR, try the most distinctive part of the phrase. Always read the matched passage before relying on it.
How to make a scanned PDF searchable with OCR
OCR reads the letters in an image and creates machine-readable text. Some scans already have that text layer; others contain only pictures. Our guide to what OCR does explains the basic idea.
If you have an Acrobat version with Scan & OCR, Adobe documents this process:
- Save a backup of the original PDF.
- Open the scan and choose All tools > Scan & OCR.
- Select In this file, then choose the page range and document language.
- Select Recognize Text.
- Save the processed PDF, then use Find again.
Check a few names, numbers and tricky words against the page image. OCR can make mistakes. Adobe recommends reviewing the recognised text and correcting or reprocessing it when necessary.
Searching existing text and creating that text with OCR are separate features. A free reader’s Find button doesn’t mean it includes OCR. Check the available features and price before starting a trial or subscription.
For confidential files, use an approved local workflow. If you choose an online OCR service, first check who will receive the document and how it’s stored. Keep the original file so a conversion can’t become your only copy.
How to search multiple PDF files at once
For a folder of PDFs, use Acrobat’s desktop Advanced Search:
- Open Find, then its three-dot menu and Advanced Search.
- Enter the word or phrase.
- Select All PDF Documents in, then Browse for Location and choose your folder.
- Select Show More Options if you need extra matching filters, then select Search.
Results are grouped by file. An image-only file still needs OCR. Encrypted PDFs may need to be opened and searched individually.
For example, if you’re checking a folder for either “invoice” or “receipt”, choose Match Any Of The Words and enter invoice receipt. To find documents containing both terms, choose Match All Of The Words; they don’t have to appear together or in that order.
For a precise phrase, choose Match Exact Word Or Phrase. Adobe’s Advanced Search reference explains these options and the limits of each search scope.
Frequently asked questions
Can I search a PDF for free?
Yes. For a PDF containing readable text, a browser, Preview or a free PDF reader is usually enough. OCR for an image-only scan is a separate task, and its cost depends on the tool you choose.
Why does Ctrl + F find nothing in my PDF?
Check that Find is searching the PDF itself, then try a short word visible on the page with restrictive matching options off. If it still fails, the page may lack a usable text layer or contain poor OCR. A second viewer and a copy-and-paste check can help narrow down the problem.
Can I search for a whole sentence?
You can try a phrase or sentence, but line breaks, hyphenation and recognition errors can get in the way. Start with two or three distinctive words. Use your reader’s exact-phrase option when available; don’t assume quotation marks behave like a web search.
Do I need to convert a PDF to Word to search it?
No. Try the PDF viewer’s Find function first. If you also want a separate text copy, Kwebby’s PDF to Text tool is designed to extract existing text. It isn’t a substitute for OCR on an image-only scan.
Does finding a word permanently highlight it?
The highlighted search result is a navigation aid. If you want a mark to remain in the saved document, use the reader’s annotation or highlighter tool and save a copy.
Final thoughts
I’d start with the simplest route: open the PDF, use Find and search a short word you can see. Then narrow the wording or matching options until you reach the passage you need.
If the document won’t search, check its text layer before trying more apps. Once an image-only scan has usable OCR text, the same search steps become useful again. For other document jobs, you can browse our PDF tools.
