Today is a historic day! I’m now running Firefox 83 an have enabled the new HTTPS-Only mode!
Tag Archives: firefox
network.http.sendRefererHeader
To disable the HTTP Referrer (Referer) header in Firefox open about:config and set network.http.sendRefererHeader to zero.
Open current tab duplicate in new window in Firefox
So I read about Firefox shortcuts and I figured to open the current tab in a new window:
- Ctrl+L
- Shift+Enter
How to Customize Firefox’s User Interface With userChrome.css
Today I read How to Customize Firefox’s User Interface With userChrome.css. You may need to enable with e.g. Firefox 69: userChrome.css and userContent.css disabled by default. If you change userContent.css you need to open your page in a new tab to force an update. I would guess that if you change userChrome.css you will need to restart Firefox (I don’t know I’ve only been using userContent.css).
I should be clear: there are two files: userChrome.css (which affects Firefox features like toolbars and tabs etc) and userContent.css (which affects web pages loaded in Firefox).
I’ve been using userContent.css to fixup CSS on various websites. You can limit your changes to a particular domain in this way:
/* 2020-07-01 jj5 - SEE: https://exploringjs.com/impatient-js/toc.html */
@-moz-document domain(exploringjs.com) {
a:visited { color: purple !important; }
}
A folder named ~/.cache/kioexec/krun/13821_0/ already exists
2017-12-09 jj5 – TODO: document this on my blog…
On Debian GNU/Linux 9.1 (stretch) when I try to open an *.desktop (application/x-desktop) link in a browser I get:
A folder named ~/.cache/kioexec/krun/13821_0/ already exists.
Searching for:
A folder named kioexec krun already exists
turned up diddly squat.
I solved the issue (for me) by changing:
System Settings -> Personalization -> Applications -> Default Application s-> Web Browser
from:
Open http and https URLs in an application based on the contents of the URL
to:
Open http and https URLs in the following browser: firefox
Migrating from Firebug to Firefox Developer Tools
See Migrating from Firebug and Firefox Developer Tools to get started. Also of interest was Web Console Helpers.
How to open the current page in a new Firefox window
You can press Ctrl+N to open a new window, but the new window loads with your home page. What I’ve found myself wanting to do is to open a copy of the current page in a new window. The way I figured was to click History in the menu bar and then Shift+Click to load the page on the top of the list (assuming the page you want is actually on the top of the list… if that’s not what you want keep looking down the list!).
How to allow a restricted port in Firefox
By default Firefox complains about access to non-standard ports and blocks access. You can override this behaviour by following these instructions. Basically add the comma separated list of allowed ports to the network.security.ports.banned.override string via about:config.
Firebug DOM panel colour-coding/legend
Found out (over here) that the colour codes in Firebug are:
Format Description Bold Black Objects Black DOM objects get in gray "Getter" functions Bold green User functions Green DOM functions Bold Red Constructor functions
Fixing Firefox/Iceweasel restricted port
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Today I ran into this warning from iceweasel when I tried to access a web service on port 101:
This address is restricted
This address uses a network port which is normally used for purposes other than Web browsing. Iceweasel has canceled the request for your protection.
I found this article which said:
- Open about:config
- Create network.security.ports.banned.override if it’s not there
- Set that setting as, e.g.: 101-104
- Refresh the page