Spawn

Administrator
Verified
Staff member
UPDATED VERSION: Prefer your 3rd-Party app? Open PDF files outside of Chrome.

How to Disable Chrome PDF Viewer

Open Chrome > Settings > Advanced > Site Settings > PDF documents
  • chrome://settings/content/pdfDocuments
  • Enabled ticker to Download PDF Files
upload_2018-3-4_20-43-50.png



Stop Chrome from opening your PDF files?
Unless you have permanently disabled it (scolldown), Google Chrome will continue to open PDF files** with the following settings:
  • chrome://plugins > Chrome PDF Viewer (disabled)***
  • chrome://plugins > Chrome PDF Viewer (enabled)
Try New Method

Open the Advanced Settings and found under Privacy (Content Settings) users can now manage how PDF documents are opened.
  • Enter URL chrome://settings/content
  • Scroll down to PDF Documents > Enable "Open PDF files in the default PDF viewer application"
  • Finished to save changes
I believe this is Google's correct way for Chrome users to disable built-in PDF viewer, and to confirm, Chrome PDF Viewer will be disabled by Enterprise Policy (greyed out) under Chrome Plugins.

ContentPDFChrome.png

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Notes:
  1. No third-party PDF software installed on Windows 10 Home 64-bit with Google Chrome stable v56.0.2XXX 64-bit.
  2. ** Enabled Edge as default PDF viewer for educational purposes to confirm method works.
  3. *** Cannot comment on the results if your use PDF software has installed a plug-in Chrome.
  4. * Discovered by accident and could not find anything on the web about it.
 
Last edited:

Dirk41

Level 17
Verified
Thank you for sharing :)
May I ask you why open a pdf in the browser may be dangerous ? Instead of downloading and opening it ?

It could launch a malicious code only by opening it in the browser ?

Thank you
 
5

509322

Thank you for sharing :)
May I ask you why open a pdf in the browser may be dangerous ? Instead of downloading and opening it ?

It could launch a malicious code only by opening it in the browser ?

Thank you
Both PDF editor\viewers and browsers are susceptible to exploits. The exploit would be program-specific. So, for example, an exploit for Adobe Reader isn't going to work in Edge.

The most targeted PDF software is Adobe products. All the others much, much less so.

* * * * *

Adding a PDF editor or viewer isn't necessary any longer - except when you need the additional features. For simple PDF viewing - you can open the PDFs in AppContainer - which adds another protection layer.

I use Edge - which runs in AppContainer - to view PDFs. Alternatively, you can set Chrome to run in AppContainer. I've also tested all the freeware PDF editor\viewers - and all are OK. Of these, I personally like SumatraPDF. I have it installed.

Security is important, but where PDFs are concerned, for me it all comes down to loading speed, smooth scrolling, a search that works well, the ability to copy-paste text and images, etc. Simple features to meet basic needs.

* * * * *

You'd be surprised how keeping things simple actually goes a long way to protecting a system and keeping you safe.
 

Dirk41

Level 17
Verified
Thank you ,but so if you don't want to open the pdf in the browser , you download it and open it in the PC ? What does it change if you open it in the PC instead of opening it in the browser?
 
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SHvFl

Level 35
Verified
Trusted
Content Creator
Thank you ,but so if you don't want to open the pdf in the browser , you download it and open it in the PC ? What does it change if you open it in the PC instead of opening it in the browser?
Personally i prefer to read things on my own pdf reader(sumatra). It's not for security or anything if that's what you implying.
My browser and pdf reader and almost equally secure.
 
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