How to Use PDF Search Engine


Over the years, PDF files have actually become one of the preferred file formats used by many industries, such as colleges, medical institutions, and even government districts. Most fields need to refer to previous research and investigations to make more innovations. Many research materials are in PDF version, so at this time we need a PDF search engine to search the materials we need for our work or study.

If you search the PDF file in the browser directly, there may be various formats of the file. Screening the file that you need will waste you a lot of time. With the PDF search engine we provided below, you just need to enter three or four keywords; you can accurately find the information or relative article you need.

1. soPDF

soPDF is a search engine that focuses on searching files in PDF format on the Internet. Currently, it contains more than 485,000,000 PDF files for you to download. In, you can download various documents, such as journal articles, manuals, e-Books, etc. All in all, soPDF can successfully use the Internet to collect various PDF files.

Meanwhile, it also supports English, Chinese, French, Japanese, and other languages to meet the needs of users in different countries. Next, we will teach you how to search the PDF file with soPDF step by step.

Step 1. Go to the soPDF search engine. Type your keyword of the PDF that you need to find into the search bar.

soPDF Search PDF

Step 2. Pay attention to the search results page, if the search result is an advertisement, you will see an "Ad" icon next to the search results. Find and click the title of the PDF file that you need on this page.

soPDF Search results

Step 3. Then you can see the PDF file that opens with your browser. If you use Google Chrome, you can click the "Download" icon which shows on the toolbar to download the PDF file. On this page, you can also rotate and print the PDF as you need.

2. PDFGeni

PDFGeni is a PDF search engine that can search PDF e-Books, manuals, catalogs, tables, and documents. The server will not collect any information about your Mac address, IP address, etc. They will collect information such as where the country you are from and search terms to analyze popular searches around the world. All popular search terms will be displayed in random order.

Step 1. Navigate to the search engine. On the homepage, you can use the "Favorites" tool to go into the PDF file that you add to it before. Enter the keywords of the PDF you want to search then click the "Search" button.

PDFGeni Search PDF

Step 2. It will show you the result immediately. Below the search bar, you will find popular searches, and all the latest search terms are listed by country.

 PDFGeni Search Results

Step 3. Click the item that you need to download or you can just view the PDF in the browser. If you use Google Chrome, you can click the "Download" icon which shows on the toolbar to download the PDF file. On this page, you can also rotate and print the PDF as you need.

3. Docjax

Docjax is one of the most world's largest document search engines. It is a free service that specifically searches for document files. As long as you enter the keywords to search for related documents, then you can see the relevant search results of the four formats of DOC, XLS, PPT, and PDF documents. Among the search result items, you can preview and download the PDF which is quite convenient.

Step 1. Type the website of the Docjax search engine into your browser.

Step 2. After entering the keywords to be searched in the search box, click the "magnifying glass" icon next to the input box to search the PDF file.

Docjax Search PDF

Step 3. Next, the search results of the keywords are listed. You can see the document information and view the document in each result.

Docjax Search Results

Step 4. You can view the information of the document by clicking the "Document Info" button and download the PDF document in your browser by clicking the "View Document" button.

4. FreeFullPDF

FreeFullPDF is a powerful free search engine for scientific articles in PDF format. With FreeFullPDF, you can download scientific journals, papers, posters, and so on. You can search over 80 million scientific documents. This website may contain sponsored links and advertisements. But it does not store, save, or collect personal information. So don't be afraid to leak privacy on this site.

Step 1. Type the keywords into the search box and then click the "Search" icon.

FreeFullPDF Search PDF

Step 2. Just click the title of the PDF file then you can get the PDF version of the file that you need.

FreeFullPDF Search Results

Step 3. Click the "Download" icon to download the PDF file.

5. PDF Search Engine

PDF Search Engine is a PDF search engine that helps you find free PDF books, e-Books, and other PDF and Word files. Using this search engine is as easy as using other search engines, such as Google, Bing, and Yahoo. Simply type the query in the text box, and then click "Enter" or the "Search" button. You will see a list of search results related to your query.

Step 1. Navigate to the website and then type the keywords into the search box. Remember to choose the "PDF Files" as the file format. Then click the "Search" icon.

PDF Search Engine Search PDF

Step 2. The search results page of the PDF Search Engine is also very simple. You just need to click the target article that you need. Then you can view the PDF file directly without other PDF readers.

PDF Search Engine Search Results

Step 3. Next, you can download the file by clicking the "Download" page in your browser.


We have listed 5 kinds of PDF search engine. You can choose the best one according to your needs. If you need some scientific documents, you can use the FreeFullPDF search engine. If you don't want to see the ads on the page, you can use the PDFGeni to search the PDF. Try them now and they will enable you to search for the PDF information you need more quickly and easily!

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