The following article provides you with information on new Firefox 53 preferences, deprecated or removed preferences, and changes to the Ghacks-user.js file for the Firefox web browser.
Mozilla released Firefox 53 on April 19, 2017 to the public. The new stable version of the web browser shipped with quite a few important changes. For one, Mozilla dropped support for Windows XP and Vista, 32-bit Mac OS X, and Linux distributions running on older processors. The second big change was the removal of the Aurora development branch.
Firefox 53 shipped with several new features, including two new compact themes known from the browser's Developer Edition, and the first Project Quantum bits.
You can download the most recent version of the user.js file from the project's Github website. Thanks goes out to Earthling for creating the changelog for Firefox 53, and to all other maintainers of the list on GitHub.
The following preferences are new additions to the browser which Mozilla added after the Firefox 52.0 release:
/** we already had the following prefs in the user.js but we now commented them out **/
The following preferences have been removed or are deprecated. Please note that some may still be used in Firefox ESR editions.
The following changes are new additions to the Ghacks-user.js file since the last release.
/** 4 new prefs in a new subsection for Favicons **/
/** for completeness' and transparency's sake these are mentioned here too,
but they contain deliberate data mismatches and syntax errors **/
/* 1110: set sandbox level. DO NOT MEDDLE WITH THESE.
* They are included to inform you NOT to play with them. ... ***/
Moved item 2025
enable/disable various media types to the personal section,
commented them all out and set all values to false, so you can easily un-comment the media formats you want to disable. Previously they were all active and enforcing either true or false. #67
Activated previously commented-out prefs
Changed values :
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