TOOL » FIREFOX

Bookmarks

Last updated:

Shortcuts ​

ActionShortcut
AddCtrl+D
OrganizeCtrl+Shift+O
SidebarCtrl+B

Run javascript on bookmark ​

Add a bookmark with the following content on the URL:

js
javascript:var main = function(){ doSomething(); }()

Example ​

Pretty-print a page with JSON content.

js
javascript:var main = function(){ document.getElementsByTagName('pre')[0].textContent = JSON.stringify(JSON.parse(document.getElementsByTagName('pre')[0].textContent), null, 2); }()

Show bookmarks bar only on new tab ​

  1. Type about:support in the address bar
  2. Find the Profile Folder row and click Open Folder
  3. Create a new folder named chrome
  4. Create userChrome.css inside the chrome folder
css
##main-window #PersonalToolbar {
  visibility: collapse !important;
}
##main-window[title^="about:newtab"] #PersonalToolbar,
##main-window[title^="New Tab"] #PersonalToolbar,
##main-window[title^="Nightly"] #PersonalToolbar,
##main-window[title^="Mozilla Firefox"] #PersonalToolbar,
##main-window[title^="Firefox"] #PersonalToolbar {
  visibility: visible !important;
}