PDF Search Engines

PDF Search Engines

Are you trying to find free eBooks online but ending up empty-handed? Here is a list of PDF Search Engines becoming game-changer in the present world.

If you are a book fanatic, you would love nothing more than the smell of books and a hot cup of coffee. However, digital advancement has made eBooks gain popularity over time, which has made people go for the websites like Goodreads, Amazon Kindle, and Wattpad.

With tons of books available on these online books, readers are enjoying themselves. These books are easily accessible to read and enjoy with extensive options available.

On top of that, the readers can download eBooks (sometimes audiobooks and podcasts) from websites to forever have them on their smartphones, tablets, and even computers.

With this said, here are the major PDF Search Engine that can help you find the right book.

1. Internet Archive

The Internet Archive also has a ton of free PDF downloads that you can browse through by subject, keywords, or using the search box. Our favorite way to find PDFs here is by sorting by view count to find the most popular ones.

With more than 2.3 million modern eBooks, the Internet Archive has archived all the full downloadable texts and books for free. Readers can access an extensive collection of modern books at the Internet Archive in many formats. On top of that, anyone can contribute to the list of books by adding their eBook to the archive.

The Internet Archive includes moving images, texts, audio, and software, along with archived web pages and provides a digital archive of websites, books, music, and other media. It also offers the Wayback Machine, which allows users to access archived versions of websites dating back to 1996. 

2. Google Scholar

What can be a better way to get the best books than Google. Google Scholar is a search engine for someone trying to find out the articles, case law, or articles on a particular topic. The users can also add articles to read later, such as a research paper and knowledgeable articles that they want to read.

On top of that, users can leverage the advanced search option allowing users to search with all the words, exact phrases, at least one word, omit certain words, and even the exact place where the keyword is placed in the article. The metrics data cited publications like Science, The Lancet, and Nature Communication.

3. PDF Drive

PDF Drive is a popular online library for PDFs. It offers access to over 78 million e-books and are available in PDF versions by default, making it a great choice for those who prefer this format.

PDF Drive has crawlers that are constantly scanning the internet to add new PDF files to its database so it stays up-to-date with newly available files.

The premium membership comes with a faster download speed and limitless cloud storage to store your ebooks.

PDF Drive has a clean and simple interface that lets you search by title, author, or keyword. You can also browse by subject or popularity. It offers recommendations based on your recent searches and interests.

4. Google Books

Whether you're looking for a recent publication or an out-of-print book, there's a good chance you'll find it on Google Books. In 2019, Google announced that Google Books contains over 40 million books.

You can enter any search term to find books that contain matches. And you can download the full text of any book in the public domain — which includes 10 million titles. Make sure to check publisher and author information when using Google Books.

The site also includes reference pages that link to book reviews. Keep in mind that you'll have more limited access to recent books. Still, Google Books is a great first step to find sources that you can later look for at your campus library.

5. ResearchGate

ResearchGate has access to 135 million publication pages in different domains like computer science, biology, mathematics, engineering, chemistry, and many more. The users can easily collaborate with their peers to advance their careers and get in-depth stats on citations.

ResearchGate is also a great option to find open-access academic sources. Scholars upload their work to ResearchGate, which makes it available to the public for free. College students looking for scientific research can often find resources on ResearchGate and even connect with scholars.

6. Project Gutenberg

Gutenberg is the best in the category of PDF search engines and is among the finest online library of free textbooks. It involves the digital archiving of cultural works, and it is aimed at promoting literary creation and distribution.

There are more than 70,000 books available on this website. Various languages are available for the books, and browsing curated eBook collections across various genres is possible. Project Gutenberg does not ask for additional fees or registration, which turns this PDF search engine to the top of the list.

On top of that, there are no compatibility issues; you can continue to read your favorite eBooks without the need for any separate applications.

The easiest way to find a book here is to browse those links above or search for something by title, author, subject, and/or language. There are several formats to download the book in, and you can save it to your computer or an online storage site like Dropbox.

7. Open Library

Open Library is a non-profit digital library offering free universal access to books, movies, and music. More than 60 million people have benefited from this library.

It offers over 4 million free e-books. Open Library is a project created by the nonprofit organization Internet Archive, and you can search for books by title, author, or subject and browse by genre or topic. The free ebooks on this website can be downloaded to your device. 

You can read the books in your browser or download them in the required format, and they also have audio versions for you to listen to. 

Although the books on Archive.org are copyrighted, you don’t have to worry about copyright infringements because you’re legally allowed to borrow them.

8. PDFBooksWorld

PDFBooksWorld Library is an excellent resource for finding free PDF books, including digital versions of public domain books converted into PDF format. The PDF books you will find here are of high quality.

Its easy-to-use interface and powerful search engine make locating and downloading books easy. However, every reader should be aware that only those person will be able to download or read the eBooks who holds the membership with PDFBooksWorld. With membership, you can access multiple books.

PDFBooksWorld keeps everything so organized that you won’t face any hassle accessing your favorite eBooks. A neat and clean Table of Content section lets you switch headings and paragraphs easily. Moreover, most eBooks at PDF Books World are easily accessible on different screens, from computers and laptops to mobile devices. 

These are some of its impressive features that makes PDFBooksWorld, the best pick for PDF search engine. 

9. ScienceDirect

ScienceDirect may be the perfect pick for you if you are an enthusiastic researcher. It is a very high-quality PDF search engine that you can use to increase the depth of insights you gain through your research projects. 

With ScienceDirect, researchers can easily access answers and the latest scientific developments, from mainstream research to the most novel and cutting-edge research. 

The databases shown here allow users to access thousands of electronic books, millions of articles, and journals on various topics. 

Once you register with ScienceDirect, you will receive more and more recommendations for articles depending on your daily activities. From Physical sciences, Health sciences to Life sciences, ScienceDirect have touched every category.

10. Science.gov

Science.gov is a PDF search engine available in the market, similar to ScienceDirect. It offers an extensive collection of authoritative federal science information and 60 and 2200 website databases. 

It is possible to download information in different formats, such as full-text documents, multimedia, and scientific data that supports federally funded research. This website lets you access research and development results and technical and scientific information from 13 federal agencies and scientific organizations. 

Users can find information on various topics on the website, including computer technology, engineering, and mathematics education and training opportunities. Whether you are a scientist, business owner, student, or teacher looking to dig into science, Science.gov is the way to go.  

11. ManyBooks

ManyBooks is a digital bookstore with over 50,000 free e-books available. You can search for books by title, author, or genre and browse bestsellers or new releases. 

It also recommends books based on the editor’s choice as well as trends. You can also filter the books by ratings or preferred language. The mobile app makes it easier for readers to read at any time and from anywhere.

The books are available in various formats, including EPUB, MOBI, and PDF. ManyBooks doesn’t require registration to download books, but you can create an account to keep track of your downloads and reading progress.

12. BASE Search

Bielefeld Academic Search Engine searched through 9000+ content providers to come up with 300+ million documents and PDFs. BASE search is a search engine for a web resource that offers complete texts of 60% of indexed records for free.

The repositories include documents such as digital collections, institutional, and journals offering content with several features.

Whether you’re looking for a specific book or want to explore new genres, these PDF search engines are sure to have what you’re looking for. Choose any of the products mentioned above to get the accurate search results of your favorite PDF and enjoy reading.

If you want to share the downloaded files and find them too large, here are some pdf compression tools.

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