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Yes. If you can see the PDF in the browser, it means it is already downloaded. You may try to convert the pdf to other formats like .swf.<br />
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A similar solved question on the EE - <br />
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<a href="https://www.experts-exchange.com/questions/25149288/How-do-make-a-PDF-file-that-is-not-downloadable-from-website.html" rel="ugc">https://www.experts-exchange.com/questions/25149288/How-do-make-a-PDF-file-that-is-not-downloadable-from-website.html</a><br />
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--Raghav.
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Yes. If you can see the PDF in the browser, it means it is already downloaded. You may try to convert the pdf to other formats like .swf.

A similar solved question on the EE -

https://www.experts-exchange.com/questions/25149288/How-do-make-a-PDF-file-that-is-not-downloadable-from-website.html [https://www.experts-exchange.com/questions/25149288/How-do-make-a-PDF-file-that-is-not-downloadable-from-website.html]

--Raghav.

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I want to make my PDF files un downloadable , &nbsp;the visitor just can see and read them , and unable to download them. Please help me . It's so important for me.
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I want to make my PDF files un downloadable ,  the visitor just can see and read them , and unable to download them. Please help me . It's so important for me.

how to made a file like pdf undownloadable . even the user have download tools like IDM

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

Adobe Acrobat is a family of application software and Web services developed by Adobe Systems to view, create, manipulate, print and manage files in Portable Document Format (PDF). The family comprises Acrobat Reader (formerly Adobe Reader), Acrobat (formerly Acrobat Exchange) and Acrobat.com. The commercial proprietary Acrobat, available for Microsoft Windows and OS X only, can also create, edit, convert, digitally sign, encrypt, export and publish PDF files.

Adobe Acrobat

Web browsers are applications used primarily to display documents, files and media from the Internet, identified by a Uniform Resource Identifier (URI) that can be a page, image, video or other file. Some browsers require the use of add-ons or extensions to safely render the information they receive; others have systems built into them to perform the same functions.