Method 4. This opens the menu. Click Get Info. For example, if Preview is set to open PDFs by default, that's what you'll see here. Click your preferred app. If you want to use Chrome, select Google Chrome. Or, to change it from Chrome, choose another option. Click Change All. A confirmation message will appear. Click Continue. The selected application will now open PDFs on your Mac by default.
Include your email address to get a message when this question is answered. Related wikiHows How to. How to. About This Article. Written by:. Having a Bachelor's degree in Engineering, he enjoys using his technical knowledge to write informative and useful content. Here is how you do it: Open Google Chrome. Click the three dots placed in the top right corner of the browser. Select Settings.
Open the Advanced menu. Select Reset and clean up from the left menu bar. Under Reset and clean up , click Restore settings to their original defaults. Share Share Tweet Email. Matthew Wallaker 88 Articles Published. Subscribe to our newsletter Join our newsletter for tech tips, reviews, free ebooks, and exclusive deals!
Click here to subscribe. Alexa Won't Connect to Wi-Fi? If I inspect the element using Dev Tools and add display: none it does what I want, but I'm not sure how to add that by default in the new window that opens.
Since you are delivering pdf file directly into the browser, displayed using Adobe Reader ActiveX, how can it be possible to prevent file download, since the files are displayed after downloaded into your temp directory?
The only way to secure your master PDF files is by creating Images for each page and present those to the user on the web via your own interface html, flash etc. You may use ImageMagick along with GhostScript for this. You may go through veryinteractivepeople. If it's only for not so tech-saavy users, you can disable download in the chrome pdf viewer by generating one-time usable unique urls eg. The download button does download a second time and will fail in this case.
This is however an implementation detail in the chrome pdf viewer that might change. If the user does not have a pdf viewer in the browser or it is disabled, the file will simply download by default.
You might want to try pdf. It is probably also less performant than the chrome pdf viewer. If you turn the content into images, users can still take the batch of images and combine them into a pdf, however in this case the text is harder to recover, but still possible with OCR.
If you want to make it harder to copy the content or just detect it, you could also use watermarks in your downloaded images or incorporate steganography to identify the user who made the copy based on the released file found in the wild. Be aware that watermarks can always be removed, usually very easily from PDF files and it is a bit harder but still possible to remove from images. If you do not want users to see the in-app experience for Chrome extension, use the feature lockdown key to suppress it.
Legal Notices Online Privacy Policy. Acrobat Reader User Guide. Select an article: Select an article:. Applies to: Acrobat Reader DC. Offer a consistent and reliable PDF viewing experience. Provide access to all the tools you need to add comments, fill forms, and sign PDFs. Install Acrobat Reader Chrome extension.
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