Opening Settings

1. Firefox Web Developer Tools
2. Firefox Web Developer Tools Ruler
3. Mozilla Developer Network
4. Firefox Web Developer Tools Font Size
5. Firefox Web Developer Tools Edit Javascript

Beginning with Firefox 62, the icon to open Developer Tools settings has been moved into a menu accessed by clicking/touching .. (the ellipsis) on the right of the tab.

The menu includes settings to control the location of the Developer Tools. You can choose between the default setting at the bottom of the windows, or move the tools to the left or right side of the screen. These settings are particularly useful if you have a widescreen monitor. You can also choose to open the tools in a separate window.

Show split console adds a section at the bottom of the tools showing the console. It makes visible the command line and one or two lines of the console output. Rcx lego download for macloadcorporation.

The rest of the settings are on the Developer Tools Settings Pane. To see the settings, open any of the Developer Tools, and then:

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• click the 'Settings' command in the menu:
• or press F1 to toggle between the active tool and the Settings pane

The Settings pane looks something like this:

Categories

Default Firefox Developer Tools

This group of checkboxes determines which tools are enabled in the toolbox. New tools are often included in Firefox but not enabled by default.

Available Toolbox Buttons

This group of checkboxes determines which tools get an icon in the Toolbox's toolbar.

As of Firefox 62, if the option to 'Select an iframe as the currently targeted document' is checked, the icon will appear in the toolbar while the Settings tab is displayed, even if the current page doesn't include any iframes.

Note that in Firefox 52 we removed the checkbox to toggle the 'Select element' button. The 'Select element' button is now always shown.

Themes

This enables you to choose one of two themes.

• There's a light theme, which is the default:

• A dark theme (the default on Firefox Developer Edition):

Common preferences

Settings that apply to more than one tool. There's just one of these:

Enable persistent logs

A setting to control whether or not the Web Console and Network Monitor clear their output when you navigate to a new page.

Firefox Web Developer Tools

If Common Preferences is not included in the Settings, Web Console logs can be persisted by using the 'about:config' url in browser address bar, searching for: 'devtools.webconsole.persistlog' then toggling this value to true

Inspector

Show browser styles

A setting to control whether styles applied by the browser (user-agent styles) should be displayed in the Inspector's Rules view. Note that this setting is independent of the 'Browser styles' checkbox in the Inspector's Computed view.

Truncate DOM attributes

By default, the Inspector truncates DOM attributes that are more than 120 characters long. Uncheck this box to prevent this behavior. This setting works by toggling the about:config preference 'devtools.markup.collapseAttributes'. To change the threshold at which attributes are truncated, you can edit the about:config preference 'devtools.markup.collapseAttributeLength'.

Default color unit

A setting to control how colors are represented in the inspector:

• Hex
• HSL(A)
• RGB(A)
• color name
• As authored.

Enable layout panel

Enable the experimental layout panel. This setting only exists in Firefox Nightly.

Web Console

Debugger

Firefox Web Developer Tools Ruler

Style Editor

Screenshot Behavior

Mozilla Developer Network

Editor Preferences

Preferences for the CodeMirror source editor, which is included in Firefox and used by several developer tools, including Scratchpad and the Style Editor.

Detect indentation

Auto-indent new lines based on the current indentation.

Autoclose brackets

Determines whether typing an opening character like [ or { will cause the editor to insert the matching closing character ] or } for you.

Indent using spaces

When checked, indentation will be performed using spaces, when off, the editor will use tabs instead.

Tab size

The frequency of tab stops in the editor. Select 2, 4, or 8.

Keybindings

Choose the default CodeMirror keybindings or keybindings from one of several popular editors:

• Vim
• Emacs
• Sublime Text

Advanced settings

Show Gecko platform data

Firefox Web Developer Tools Font Size

A setting to control whether or not profiles should include Gecko platform symbols.

Disable HTTP Cache

Disable the browser HTTP cache to simulate first-load performance in all tabs that have the Toolbox open. This setting persists, meaning that if it is set, caching will be disabled whenever you reopen the devtools. Caching is re-enabled when the devtools are closed. Note that service workers are not affected by this option.

Disable JavaScript

Reload the current tab with JavaScript disabled.

Enable Service Workers over HTTP

Enable Service Worker registrations from insecure websites.

Firefox Web Developer Tools Edit Javascript

Enable browser chrome and add-on debugging toolboxes

Enable you to use developer tools in the context of the browser itself, and not only web content.

Enable remote debugging

Enable the developer tools to debug remote Firefox instances.

Enable worker debugging

Enable a panel within the debugger to debug workers.

Pci express root complex windows 10. Note: This option got removed from the UI in Firefox 56, because this version ships with a new Debugger UI, but it can still be enabled for the old UI by setting the preference devtools.debugger.workers to true.