#Tenfourfox keeps saying untrusted pdf
#Tenfourfox keeps saying untrusted upgrade

This can affect how certain sites interact with the browser and what features they enable. The User Agent option controls how the user agent, the string the browser uses to identify itself, is set. This will display the document more quickly and correctly, but note that the document is not scanned for malware or other attempts to exploit flaws in the viewer, so it should not be used to view documents from unknown or suspicious sources. If this option is unchecked, TenFourFox will usually offer to download the document, after which you can open it with Preview.app, Acrobat Reader, or other tools. It is also slower than Preview.app or Adobe Acrobat.

#Tenfourfox keeps saying untrusted pdf

This viewer is written in JavaScript and is designed to be safer when viewing PDFs from unknown sources, but does not support many PDF features and may display certain documents incorrectly. If this option is checked, TenFourFox uses a built-in PDF viewer. The PDF Viewing option controls whether the built-in PDF viewer is used. Here is more information about the best option for your system. Machines in the midrange, such as last-generation G4 systems, iBooks and PowerBooks, often should not. In general, very fast Power Macs and very slow Power Macs should use MSE fast G5s can display in higher resolutions, and very slow Macs may have low bitrate options like 144p that are not available without MSE. If this option is not checked, MSE is disabled, and the lower bitrate but faster VP8 codec is used instead. However, VP9 requires more computing resources to decode, and sites may select viewing resolutions your computer cannot handle.

#Tenfourfox keeps saying untrusted upgrade

MSE allows the use of the more advanced VP9 video codec and allows sites to monitor and upgrade or downgrade your video quality dynamically, and may offer more video resolution options on certain sites such as YouTube. The MediaSource option controls whether MediaSource Extensions (MSE) are enabled. To access the prefpane, go to the TenFourFox pull-down menu, select Preferences., and in the new tab that opens click the TenFourFox tab on the left. Not all options appear in earlier versions of the browser. You should be using at least version 45.6 or later. Some of these features are unique to TenFourFox. The TenFourFox preference pane controls features specific or useful for TenFourFox users.