screenshotOpen in PDF Viewer  |  Download Open any PDF file in a desired PDF viewer.

Some of the important features of the Open in PDF Viewer addon are listed below. This is followed by an overview of this addon. This summary contains few words about the addon, its function, and its features. Next is FAQ, this section is useful to get information about how this addon works in your browser. If you couldn't find a specific answer, please fill the bug report form on this page or the contact form on the homepage to let us know about your question. Following the FAQ, is the bug report form. It is designed to collect user feedbacks and bugs about this addon. Users can suggest improvements or feature requests through this form too. The next section is for submitting comments about this addon which uses the Facebook comments plugin. The last section is dedicated to reports submitted through the GitHub website. We hope the information provided on this page, could help you get all the basics you need about this addon and enable you to have a better experience with Open in PDF Viewer.

In short, Open in PDF Viewer downloads and opens a PDF link in a pre-defined PDF viewer, default viewer is Adobe Acrobat Reader. Please check the YouTube tutorial below to get an idea of how this addon works in your browser. If you want to contribute to the developement of this addon, please fork it on GitHub, and push your changes to a named branch. Moreover, you can review all the comments made on GitHub commits.

5 Reasons to Use Open in PDF Viewer

  • Allows you to open and download PDF files as you browse with just one click.

  • You can choose to open PDF files in your desired PDF viewer.

  • Input arguments for the PDF viewer can also be set within the options page.

  • Has a right-click context-menu item for easy access.

  • Available for all browsers and platforms.

YouTube Tutorial

This video gives you an idea of how the extension works in your browser.

Matched Content

Frequently Asked Questions

  • 1. What is Open in PDF Viewer?

    Open in PDF Viewer, is a simple and very lite addon which allows you to easily open desired PDF links in a chosen PDF viewer. Default option for the PDF viewer is adobe acrobat reader. In windows 10, the default location for Adobe Acrobat is: "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe". If you have a different OS, or if you installed Adobe Acrobat in a different folder, please adjust the field accordingly. You can change this from the options page. Moreover, there is also an input field which you can add arguments for the viewer. For example, to open PDF as full-screen or without toolbar. Please note that, if you change the PDF viewer make sure to change the input arguments as well. Each PDF viewer has its own arguments to function. If you keep adobe as the default PDF viewer, please visit this page to get more info about input arguments (

  • 2. How can I operate with this addon?

    In order to operate with this addon, please right-click on any link (a link to a pdf document) and then click on - Open and Download with PDF Viewer - item from the context-menu. The PDF file will first be downloaded and then opened in a default PDF viewer (the one which is set in the options page). Please note that, the PDF file will be downloaded in the default download folder in your browser.

  • 3. How can I download the source code for Open in PDF Viewer?

    To download the source code for this extension from Chrome Web Store, it is recommended to use Extension Source Downloader. With this addon, you can download the source code as a ZIP or CRX format to your machine. If you want to download the source code from the Firefox addons store, please open the firefox download link (if available) in the Firefox browser and then right-click on the - Add to Firefox - button and select - Save Link As... - item. Choose the destination folder on your machine and then save the file in XPI format. You can then rename the XPI format to a RAR or ZIP file. Some extensions may have a GitHub repo address, which you can use to download the source code as well. But, it may not be the latest version of the addon. Therefore, downloading the source code from the official web stores is the best option as it always gives you the latest version of the addon.

  • 4. What do I need to do before using the addon?

    When you first install the addon, please head to the options page and adjust the path for PDF reader. Depending on your operating system, the path to PDF viewer could be different. For example, in windows 10 the path to Adobe Acrobat Reader is: "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe". If you choose a different viewer, please make sure to adjust the path accordingly. Once you set the correct path to PDF viewer in the options page, please install the native-client patch. This patch is used to make the communication between the addon and PDF viewer (native app). Please read the following to get more info about installing native-client patch on your machine.

  • 5. What is native-client?

    Native client patch is used for connecting your browser (Firefox, Chrome and Opera) with native applications on your machine (Windows, Linux and Mac). If you have an add-on in your browser that needs to communicate with an external application on your computer, this native client patch can be used to easily make this connection.

  • 6. How can I install native-client patch?

    After installing the addon, you need to connect it with native applications (i.e. IE) on your machine. In order to make this connection, a separate patch is provided in GitHub. Please download and install this patch from here. Follow the instruction in the GitHub page to download and install the related patch to your system. After installing, the "Open in PDF Viewer" addon in your browser can communicate with PDF viewer (i.e. Adobe Acrobat Reader) on your machine (Window, Linux or Mac).

  • 7. Can I just open and NOT download the PDF file (.pdf URL)?

    No, you cannot directly open a PDF link in an external application. You need to first download and then open a PDF file in an external application.

  • 8. How can I change the default PDF viewer?

    In order to change the default PDF viewer, please head to the options page and edit the top input field. Default PDF viewer is Adobe Acrobat Reader. You can change this viewer to your desired choice. Please make sure to write the correct path for the viewer.

  • 9. How can I add arguments for the PDF viewer?

    In order to add arguments, please head to the options page and add desired arguments in the designated area. For adobe acrobat reader, there are several arguments which you can use. For example if you want to open a document with a 30% zoom, please write zoom=30 in the field. If you need to write two arguments, join them with - & - operator (zoom=30&toolbar=0). To get more info about input arguments for the Adobe PDF viewer, please visit this page in adobe website.

  • 10. Does this addon has a toolbar button?

    No, this addon does not have a toolbar button. Only a context-menu item is available to operate with this addon. In order to open the options page, please open the extensions page in your browser and then click on the - Options - button.

  • 11. What if I open a single PDF file, multiple times with this addon?

    Every time you open a PDF file, the addon will download the file and then opens it with external PDF application. Each time the file will be downloaded with a distinct name in the default download folder.

  • 12. Is this addon available for mobile browsers?

    No, this addon is not available for mobile browsers. Currently, only desktop browsers are supported. In future, support for mobile browsers will be added as well.


Reporting Bugs

Your feedback goes a long way towards making this addon even better. With this feedback and bug report form, you can report bugs or suggest features/enhancements for the functionality or performance of this addon. Please note that this form will be sent to the developer(s) of this addon. You will not get an immediate or personal response at the moment. However, the developer(s) may contact you through the email address provided in this form for further clarifications or to request additional information regarding the reported bug(s).

If you want to rate or write a review for this addon in the official webstore, please press the - Rate this addon - button below.

Please enter the name of the extension (addon).

Please enter the current version of the extension.

Please be as specific as possible. Basically, describe what happened, what you were doing when it happened, and why you think it is a problem.

Describe the step-by-step process required to reproduce the issue you are reporting. Be specific when describing these steps by providing as much detail as possible.

Please try to leave a link to a screenshot for the specific bug or error report.

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Reviews | Discussions

Please note: keep these reviews/discussions clean, and avoid the usage of derogatory or inappropriate language or terminology in references to individuals or groups based on race, national or ethnic origin, color, religion, age, gender, etc. Do not submit bugs in your reviews, use the above bug-report section instead. Also, never post any personal information in these reviews.