PDF Search Engine

Search For Books, Research, and Other PDFs with this Search Engine

Search More Filetypes like Spreadsheets, Word Documents, Presentations, and More

Legal Disclaimer: FileSearchBox does not host files for download. We are not responsible for copyrighted content found on other domains.

On FileSearchBox, you can search the entire web for every public-facing PDF available! That means that if a website offers a .pdf download without you needing to login or anything, then you can access it through this search engine.

This search engine uses the Google index, but filters it only to PDF results.

You can click on any result and get a .PDF download instantly, or some browsers the PDF will open in a new tab. If you use one of those browsers, but want to download the PDF instantly, just right-click and select “save link as”.

If been able to find a ton of free textbook PDFs using this search engine, so I’m quickly becoming an expert on topics I’m curious about, including topics that I didn’t go to school for!

Warning: There are a couple of ways downloading PDFs can be unsafe. While the majority of them are what you were looking for, you still need to be vigilant. Malicious internet scammers will name a PDF file the same name and author as a common book, but you are not receiving the actual book. Never click “Enable Macros” or “Enable Editing” from a PDF until you know it’s safe. Those features can have viruses or links to virus embedded in them. 

The other way these scammers will get you is by putting a “download now” button or another similar link on the first page of the PDF. So you think you just opened another website, and click “download” but really the PDF is already opened and you probably clicked download to a virus or another program with malicious intent.

FileSearchBox provides a layer of safety when you search for PDF files because we warn you that you are leaving the site. As soon as you leave the site, check to make sure you downloaded a legitimate PDF.

Every time you want to learn something, be educated about a hobby or field of study, or get deeper content on a topic, this is the best place to search for PDFs. You see, blog posts and web content is great for learning, but nothing beats having an entire, comprehensive book on a topic. By searching for a topic, you can often find ebooks available that cover the topic in much greater detail than you’d find in a blog post.

This is especially true of fields of study. For instance, if you want to learn statistics, you probably won’t find many resources just by searching a standard Google search. By comparison, you may even find free textbooks when you search for PDF files.

Technically yes, some of the PDFs this search engine finds are books. If somebody uploads a book to a public server, and doesn’t exclude the PDF file type from being indexed, Google will index that book and it will be included on FileSearchBox.

However, sometimes people upload files that they do not have the right, nor desire to distribute. I am not a lawyer, and cannot recommend your course of action here.

Since we’re using a Google Custom Search to find PDFs, we are beholden to whatever Google is allowing to happen on their search engine.

I would say, at a minimum, that you should not distribute any free books you find using this search engine unless the book says otherwise, or the author has given permission to do so.

We didn’t stop at PDFs. We made a search engine for almost every major file type! 

This List contain all of the filetype search engines we’ve made.

Here are some of the more popular tools we have.

PPT Search Engine

XLS Search Engine

Google Docs Search Engine


If you are frequently hungry for more knowledge, make sure you bookmark this site so that any time you want deeper information about a topic you can come search for a PDF.

To do that, right click your bookmarks bar and select “add bookmark”, then I’d recommend naming it “PDF Search Engine”.