anything similar to "about:config" like in Firfox with
in about:config, the browser.chrome.favicon pref is The browser.chrome.guess_favicon pref is a hidden pref and not exposed in about:config by default. You can create a new Boolean pref to see if it has effect. Angelsong7 Question owner About:config entries - MozillaZine Knowledge Base Apr 05, 2017 Configuring Chrome and Firefox for Windows Integrated
Replace [preference] and [value] with the name of the preference you want to lock, as seen in about:config, and the locked value for that preference. For example, to lock the toolbar into showing only text buttons instead of icons, you would type: lockPref("browser.chrome.toolbar_style", 1);
about URI scheme - Wikipedia about is an internal URI scheme (also known as a "URL scheme" or, erroneously, "protocol") implemented in various Web browsers to reveal internal state and built-in functions. It is an IANA officially registered scheme, and is standardized [citation needed].. In early versions of Netscape, any URI beginning about: that wasn't recognized as a built-in command would simply result in the text
Related: [Tip] How to Access "About:Config" Page in Mozilla Thunderbird. 2. Access Hidden Secret "chrome://flags" Page in Google Chrome. If you are a Google Chrome user, you can access a similar secret configuration page using following steps: 1. Type about:flags or chrome://flags in Chrome's addressbar and press Enter. It'll open the advanced
Connection failures due to SSL certificate errors with Latest Firefox and Chrome browsers do not support SHA-1 certificate and StoreFront connection fails with error: NET::ERR_CERT_WEAK_SIGNATURE_ALGORITHM Citrix Receiver for Chrome/HTML5 or Citrix Workspace app for Chrome/HTML5 cannot establish secure connection and session launch will fail. NET::ERR_CERT_COMMON_NAME_INVALID error Securing VPN DNS Leaks in Firefox and Chrome - VPN Zoom Mar 06, 2015