10 Best Mozilla Firefox about:config Tweaks

I only using two kinds of web browser, Mozilla Firefox and Internet Explorer. Internet Explorer is a good default web browser for Windows, but, since it hard to tweaks and lack of customization functions, I switched to Mozilla Firefox that much easier and faster too.

I did not having a hard time arguing on memory usage made by Firefox like most of users had, the thing is, please install CleanMem to manage the famous "Firefox memory leakage", yes, CleanMem does the job, Firefox only took ± 20MB of RAM after 2 hours surfing on my low specs. PC with 1 MB of RAM and Windows 7 installed.

The point is, we are not talking about Firefox resource usage here but it's only a little bit of "commercial break" .. haha!! .. Ok, from a various tutorial on tweaking Firefox "about:config", here is the best 10 tweaks that you can use for a various function on Firefox.

1: Speed up Firefox

This hack requires a few steps. Search for pipelining in the filter and you should see:

network.http.pipelining: Change this to true.
network.http.proxy.pipelining: Change this to true.
network.http.pipelining.maxrequests: Change this to 8.

Now search for max-connections and you should see:

network.http.max-connections: Change this to 96.
network.http.max-connections-per-server: Change this to 32.

2: Disable antivirus scanning

This is only for the Windows version. If you're downloading large files, this scanning can seriously slow things down. And since you will most likely scan the downloaded file anyway, you'll probably want to disable this. Of course, if you are uber paranoid (not a bad trait for computing), you might want to leave this entry alone.

To disable antivirus scanning, search for scanWhenDone and you should see:

browser.download.manager.scanWhenDone: Change this to false.

3: Open Javascript popups as tabs

If a popup window lacks the features of a browser window, Firefox will handle it like a popup. If you would prefer to open all windows, including popups, as new tabs, you need to tell Firefox in about:config. Search for newwindow and you will see three entries. Of those three entries, you will want to modify:

browser.link.open_newwindow.restriction: Change this to 0.

4: Spell check in all fields

By default, Firefox checks spelling only in multiple-line text boxes. You can set it to check spelling in all text boxes. Search for spellcheckdefault and you should see:

layout.spellcheckDefault: Change this to 2.

5: Open search bar results in new tab

When you use the search bar, the results display in the current tab. This can be a nuisance because you will navigate out of the page you're currently in. To make sure Firefox always opens search results in a new tab, search for openintab and you should see:

browser.search.openintab: Change this to true.

6: Auto-export bookmarks

In Firefox 3, bookmarks are automatically saved and exported for you. The only problem is that by default, they're saved as places.sqlite instead of the more convenient bookmarks.html. To change this setting so that they can be easily re-imported, search for autoExportHTML and you should see:

browser.bookmarks.autoExportHTML: Change this to true.

7: Disable extension install delay

One of the few gripes I have with Firefox is the silly countdown you must endure every time you want to install an extension. Fortunately, this can be disabled. Search for enable_delay and you should see:

security.dialog_enable_delay: Change this to 0.

8: View source code in an external editor

When you need to view the source of a page, it opens up in browser popup. Most developers would probably like to have that opened in their favorite editor instead of having to cut and paset. To do this, there are two entries to modify. Search for view_source.editor and you will see:

view_source.editor.external: Change this to true.
view_source.editor.path: Change this to the explicit path to your editor of choice.

9: Get more add-on search results

When you do a search in the Add-on window, you'll see just five results. You might find it more efficient to increase this number. Search for getAddons and you should see:

extension.getAddons.maxResults: Change this to 10 (or higher, if you want to see even more).

10: Redefine the Backspace button

Did you know you can configure Firefox to use the backspace button to either go back a page or go up a page? This keeps power users from having to go back and forth from the keyboard to the mouse. Search for backspace and you will see:

browser.backspace_action: Change this to 0 for previous page and 1 for page up.

There you go, the 10 best tweaks (I thought so), happy tweaking and enjoy your new tweaked Mozilla Firefox ..