How do I find all files of one type in a folder without searching the whole computer?
Quick answer
In Windows File Explorer, open the folder, then check Search options: searches include child folders by default, but you can narrow the scope to the current folder or to folders beneath it. Use a file-kind filter, such as document, picture, or video, when a broad category is sufficient. Microsoft’s guidance does not establish how to combine a specific extension pattern such as *.pdf with those scope choices, so don’t assume that this finds only PDFs within the selected folder. [S1][S2]
The question, the details, the next step.
I want every PDF in one particular folder, not PDFs scattered across my computer. How should I set that up?
In Windows File Explorer, open the folder you want to search. Before relying on results, check Search options in the toolbar. Explorer searches from the current folder and includes its child folders by default; the options can narrow the search to just the current folder or to folders beneath it. [S1]
Microsoft also gives *.doc and *.mp3 as examples of extension patterns, but its guidance for those examples searches This PC. It does not establish that entering *.pdf in a selected folder will work with the scope controls as intended. [S2] So I can’t confidently give that as a verified method for finding only PDFs in that folder. If a broad category is acceptable, use a file-kind filter instead, such as Document, and check the scope. [S1]
How do I check whether the search includes subfolders?
Open Search options and check the selected scope. The default includes child folders; the options can narrow the search to the current folder alone or include folders beneath it. [S1]
Decide which result you want before searching:
- Choose the current-folder scope for files directly in that folder.
- Choose the scope for folders beneath it if you also want files in nested folders.
After searching, inspect the result locations as a practical cross-check. If you see a nested location but wanted only direct contents, revisit the scope and search again. The guidance documents the scope choices, but doesn’t specify a particular visual indicator or guarantee that checking result locations verifies every match.
What if I don’t know the extension, or I’m using a Mac?
In Windows, use a file-kind filter if a broad category is enough. Microsoft lists kinds such as document, picture, and video; those categories aren’t the same as selecting one exact extension. [S1]
In Finder on a Mac, you can add search criteria such as Name and Kind, and set criteria to match all, any, or none of them. Kind can help when you want a broad category. Apple’s guidance here doesn’t establish an extension-specific filter or fully explain how to limit the search to a chosen folder, so check Finder’s displayed location and criteria rather than assuming the search is folder-only. [S3]
Will searching by type change what happens when I open a file? What should I do if I need a specific extension?
The search steps above use the search box, scope options, and kind criteria; they don’t require changing file-opening settings. Keep those settings separate from your search task. The cited guidance doesn’t describe file-association controls, so I won’t give menu instructions for them.
For example, if you need PDFs directly inside a chosen Windows folder, open that folder and select the current-folder scope. The available guidance supports checking that scope, but not the combined procedure of applying *.pdf within it. A Document kind filter may help locate a broader set of documents, but it isn’t a verified substitute for an exact PDF search. Don’t treat a matching name or kind as proof that a file is readable or valid.
A practical checklist
Open the folder you intend to search before setting the search scope.
In Windows, check Search options; child folders are included by default.
Choose current-folder scope for direct contents, or the beneath-folder scope for nested contents.
Use a broad file-kind filter only if that level of specificity is enough.
Inspect result locations as a practical cross-check.
Keep file-opening settings separate from the search task.
A few more useful answers
Does opening a folder automatically exclude its subfolders in Windows?
No. File Explorer includes child folders by default. Search options can narrow the scope to the current folder or include folders beneath it. [S1]
Can I rely on `*.pdf` to find PDFs only within a selected folder?
The available guidance gives extension-pattern examples for a This PC search, but doesn’t establish how to combine an extension pattern with a selected-folder scope. [S2]
Does Finder’s Kind criterion select one exact extension?
The cited Finder guidance supports Name and Kind criteria, but doesn’t establish an extension-specific filter. [S3]
Sources
References used for this guide.
- [S1] Find what you need with Microsoft Search — Windows File Explorer scope and filters support.microsoft.com · Checked
- [S2] Find lost files after upgrading Windows — extension-pattern examples support.microsoft.com · Checked
- [S3] Narrow your search results in Finder on Mac support.apple.com · Checked