先備份下列檔案：
(Windows Drive):\Documents and Settings\(Current Account)\Application Data\Mozilla\Firefox\Profiles\(８位數亂碼.Firefox 使用者帳號)
(Application Data 通常為隱藏狀態)

Step 1. 啟動 Firefox, 於網址列輸入 about:config, 按下 Enter 鍵進入 Firefox 參數設定頁面

Step 2. 修改以下參數內容 (可於 過濾器 中輸入參數名稱快速搜尋):

network.http.pipelining = true

network.http.proxy.pipelining = true

network.http.pipelining.maxrequests = 10

Step 3. 按滑鼠右鍵, 點選「新增」→「整數」

輸入設定名稱: nglayout.initialpaint.delay (如該值已存在，則無需新增)

輸入整數值: 0

Step 4. 於 Firefox 捷徑中, 加上 -turbo 的參數:

"C:\Program Files\Mozilla Firefox\firefox.exe" -turbo
(假設 C:\Program Files 為安裝路徑)

* 如果無法打開 about:config ，則您需要到
(Windows Drive):\Documents and Settings\(Current Account)\Application Data\Mozilla\Firefox\Profiles\(８位數亂碼.Firefox 使用者帳號)
(Application Data 通常為隱藏狀態)
中，以Notepad手動打開prefs.js

* 如果因設定錯誤而無法啟動 Firefox ，
請回覆至備份中之 prefs.js

* 如果因新插件錯誤而無法啟動 Firefox ，
請於 Firefox 捷徑中, 加上 -safe-mode 的參數:
"C:\Program Files\Mozilla Firefox\firefox.exe" -safe-mode
(假設 C:\Program Files 為安裝路徑)

然後選重新設定。

* Speeding up Firefox the right way

原文來自[Speeding up Firefox the right way]

(1)通用設定:這裡的選項與您的電腦運算速度及網路速度無關,是每台電腦都可使用的設定.其他的選項請依您的電腦與網路,在(2)~(6)項中選用.

"content.notify.backoffcount", 5
"network.http.pipelining", true
"network.http.proxy.pipelining", true
"network.http.pipelining.maxrequests", 8
"plugin.expose_full_path", true
"ui.submenuDelay", 0

(2)寬頻/高速電腦使用者設定:這些設定適用60MB以上的記憶體,以及較快的寬頻網路((A)DSL/Cable/fiber ).

"browser.cache.memory.capacity", 65536
"content.interrupt.parsing", true
"content.max.tokenizing.time", 2250000
"content.notify.interval", 750000
"content.notify.ontimer", true
"content.switch.threshold", 750000
"network.http.max-connections", 48
"network.http.max-connections-per-server", 16
"network.http.max-persistent-connections-per-proxy", 16
"network.http.max-persistent-connections-per-server", 8
"nglayout.initialpaint.delay", 0

(3)中等頻寬/高速電腦使用者設定:這些設定適用較慢的寬頻網路((A)DSL/Cable).

"browser.cache.memory.capacity", 65536
"content.max.tokenizing.time", 2250000
"content.notify.interval", 750000
"content.notify.ontimer", true
"content.switch.threshold", 750000
"network.http.max-connections", 48
"network.http.max-connections-per-server", 16
"network.http.max-persistent-connections-per-proxy", 16
"network.http.max-persistent-connections-per-server", 8
"nglayout.initialpaint.delay", 0

(4)窄頻/高速電腦:56K/V9.0撥接網路適用:P

"browser.cache.memory.capacity", 65536
"browser.xul.error_pages.enabled", true
"content.interrupt.parsing", true
"content.max.tokenizing.time", 3000000
"content.maxtextrun", 8191
"content.notify.interval", 750000
"content.notify.ontimer", true
"content.switch.threshold", 750000
"network.http.max-connections", 32
"network.http.max-connections-per-server", 8
"network.http.max-persistent-connections-per-proxy", 8
"network.http.max-persistent-connections-per-server", 4
"nglayout.initialpaint.delay", 0

(5)寬頻/慢速電腦:這裡的最後一項設定取消狀態列的功能,以節省電腦的運算.

"content.max.tokenizing.time", 3000000
"content.notify.backoffcount", 5
"content.notify.interval", 1000000
"content.notify.ontimer", true
"content.switch.threshold", 1000000
"content.maxtextrun", 4095
"network.http.max-connections", 48
"network.http.max-connections-per-server", 16
"network.http.max-persistent-connections-per-proxy", 16
"network.http.max-persistent-connections-per-server", 8
"nglayout.initialpaint.delay", 1000
"dom.disable_window_status_change", true

(6)窄頻/慢速電腦

"content.max.tokenizing.time", 2250000
"content.notify.interval", 750000
"content.notify.ontimer", true
"content.switch.threshold", 750000
"network.http.max-connections", 32
"network.http.max-connections-per-server", 8
"network.http.max-persistent-connections-per-proxy", 8
"network.http.max-persistent-connections-per-server", 4
"nglayout.initialpaint.delay", 750
"dom.disable_window_status_change", true

* 加快你 FF 瀏覽的速度

原文來自[這裡 http://forum.moztw.org/viewtopic.php?t=4913

"browser.turbo.enabled", true
"network.http.pipelining", true
"network.http.pipelining.firstrequest", true
"network.http.pipelining.maxrequests", 32
"network.http.proxy.pipelining", true
"nglayout.initialpaint.delay", 0

另外在你的 FF 捷徑後面加上 -turbo 這樣開 FF 也會加快
如"C:\Program Files\Mozilla Firefox\firefox.exe" -turbo

* 其他

"browser.display.show_image_placeholders"功能：這個設定的作用是 當圖片無法正確顯示時 會顯示一個替代的圖案 告訴你這裡有圖片 "browser.chrome.favicons"請看 http://forum.moztw.org/viewtopic.php?t=3565&highlight=browser.chrome.favicons "browser.urlbar.autocomplete.enabled"不清楚...知道的大大請補充 "browser.urlbar.autoFill"類似 IE 的自動完成功能 "network.http.pipelining.firstrequest"這個我也不知道..請補充

"browser.display.show_image_placeholders", true
"browser.chrome.favicons", fales
"browser.urlbar.autocomplete.enabled", true
"browser.urlbar.autoFill", true
"network.http.pipelining.firstrequest", true