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	<id>https://docs.moodle.org/dev/index.php?action=history&amp;feed=atom&amp;title=Web_developer_extension</id>
	<title>Web developer extension - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://docs.moodle.org/dev/index.php?action=history&amp;feed=atom&amp;title=Web_developer_extension"/>
	<link rel="alternate" type="text/html" href="https://docs.moodle.org/dev/index.php?title=Web_developer_extension&amp;action=history"/>
	<updated>2026-08-08T02:33:32Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.43.5</generator>
	<entry>
		<id>https://docs.moodle.org/dev/index.php?title=Web_developer_extension&amp;diff=61998&amp;oldid=prev</id>
		<title>Andrewnicols: Note about plan not to migrate this page to the new developer resources. See template for more info.</title>
		<link rel="alternate" type="text/html" href="https://docs.moodle.org/dev/index.php?title=Web_developer_extension&amp;diff=61998&amp;oldid=prev"/>
		<updated>2022-04-19T12:23:20Z</updated>

		<summary type="html">&lt;p&gt;Note about plan not to migrate this page to the new developer resources. See template for more info.&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 12:23, 19 April 2022&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{obsolete}}&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{Template:WillNotMigrate}}&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;#039;&amp;#039;&amp;#039;Web developer extension&amp;#039;&amp;#039;&amp;#039; for [[Firefox]] is an essential tool for web developers. It has too many functions to list them all but some of the most useful for use with Moodle development are explained below. Visit the [http://chrispederick.com/work/webdeveloper/documentation/ web developer extension&amp;#039;s homepage] to download and install and for more documentation. Or get it from the [https://addons.mozilla.org/en-US/firefox/addon/60 Firefox Add-on page].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &amp;#039;&amp;#039;&amp;#039;Web developer extension&amp;#039;&amp;#039;&amp;#039; for [[Firefox]] is an essential tool for web developers. It has too many functions to list them all but some of the most useful for use with Moodle development are explained below. Visit the [http://chrispederick.com/work/webdeveloper/documentation/ web developer extension&amp;#039;s homepage] to download and install and for more documentation. Or get it from the [https://addons.mozilla.org/en-US/firefox/addon/60 Firefox Add-on page].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Andrewnicols</name></author>
	</entry>
	<entry>
		<id>https://docs.moodle.org/dev/index.php?title=Web_developer_extension&amp;diff=26521&amp;oldid=prev</id>
		<title>Nakohdo: /* See also */</title>
		<link rel="alternate" type="text/html" href="https://docs.moodle.org/dev/index.php?title=Web_developer_extension&amp;diff=26521&amp;oldid=prev"/>
		<updated>2011-06-24T12:05:03Z</updated>

		<summary type="html">&lt;p&gt;&lt;span class=&quot;autocomment&quot;&gt;See also&lt;/span&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 12:05, 24 June 2011&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l29&quot;&gt;Line 29:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 29:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [http://www.microsoft.com/downloadS/details.aspx?familyid=E59C3964-672D-4511-BB3E-2D5E1DB91038&amp;amp;displaylang=en Internet Explorer Developer Toolbar] for a similar tool for Microsoft Internet Explorer&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [http://www.microsoft.com/downloadS/details.aspx?familyid=E59C3964-672D-4511-BB3E-2D5E1DB91038&amp;amp;displaylang=en Internet Explorer Developer Toolbar] for a similar tool for Microsoft Internet Explorer&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [http://www.sitepoint.com/blogs/2010/03/23/chrome-web-developer-toolbar/ &amp;quot;The Web Developer Toolbar Comes to Chrome&amp;quot;]  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [http://www.sitepoint.com/blogs/2010/03/23/chrome-web-developer-toolbar/ &amp;quot;The Web Developer Toolbar Comes to Chrome&amp;quot;]  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;* [https://addons.mozilla.org/en-US/firefox/addon/toggle-web-developer-toolbar/ Toggle Web Developer Toolbar] Firefox add-on&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Developer tools]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Developer tools]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Themes]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Themes]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Firefox extensions]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Firefox extensions]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Nakohdo</name></author>
	</entry>
	<entry>
		<id>https://docs.moodle.org/dev/index.php?title=Web_developer_extension&amp;diff=24965&amp;oldid=prev</id>
		<title>Deraadt: Created page with &quot;The &#039;&#039;&#039;Web developer extension&#039;&#039;&#039; for Firefox is an essential tool for web developers. It has too many functions to list them all but some of the most useful for use with Moo...&quot;</title>
		<link rel="alternate" type="text/html" href="https://docs.moodle.org/dev/index.php?title=Web_developer_extension&amp;diff=24965&amp;oldid=prev"/>
		<updated>2011-06-16T07:24:02Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;The &amp;#039;&amp;#039;&amp;#039;Web developer extension&amp;#039;&amp;#039;&amp;#039; for &lt;a href=&quot;/dev/Firefox&quot; title=&quot;Firefox&quot;&gt;Firefox&lt;/a&gt; is an essential tool for web developers. It has too many functions to list them all but some of the most useful for use with Moo...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;The &amp;#039;&amp;#039;&amp;#039;Web developer extension&amp;#039;&amp;#039;&amp;#039; for [[Firefox]] is an essential tool for web developers. It has too many functions to list them all but some of the most useful for use with Moodle development are explained below. Visit the [http://chrispederick.com/work/webdeveloper/documentation/ web developer extension&amp;#039;s homepage] to download and install and for more documentation. Or get it from the [https://addons.mozilla.org/en-US/firefox/addon/60 Firefox Add-on page].&lt;br /&gt;
&lt;br /&gt;
== For CSS development ==&lt;br /&gt;
&lt;br /&gt;
These functions are useful for anyone creating and debugging [[CSS]]:&lt;br /&gt;
&lt;br /&gt;
* Disable Cache - this prevents Firefox from storing old versions of CSS files as you make changes&lt;br /&gt;
* Edit CSS - this allows you to make changes to the CSS and see the changes instantly. Great for exploring and testing.&lt;br /&gt;
* Display Element Information - show information about page elements, such as ancestors as you hover over them with the mouse.&lt;br /&gt;
* Display Id &amp;amp; Class details - displays all class and id names where-ever they are used.&lt;br /&gt;
* Enable only print style in normal view - useful for developing [[Print style|print styles]].&lt;br /&gt;
&lt;br /&gt;
== For HTML development ==&lt;br /&gt;
&lt;br /&gt;
These functions are useful when creating HTML code:&lt;br /&gt;
&lt;br /&gt;
* Outline Tables/Headings/Deprecated elements - the outline function puts colored boxes around the elements you specify to make them easier to locate and work with.&lt;br /&gt;
* Validate local HTML - sends the HTML you are looking at to the [[W3C_validation| Validator]]. Most Moodle pages are protected by passwords so validators cannot visit them, which is the usual practice.&lt;br /&gt;
&lt;br /&gt;
== For accessibility ==&lt;br /&gt;
&lt;br /&gt;
See the [[Accessibility]] page for more tools.&lt;br /&gt;
&lt;br /&gt;
* Replace images with alt attributes - lets you read what those with images unavailable or turned off will receive.&lt;br /&gt;
* Linearize page - shows the order in which audio or small screen browsers will present information&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
* [[Firebug]] for information about Firebug, another powerful Firefox extension for web developers&lt;br /&gt;
* [http://www.microsoft.com/downloadS/details.aspx?familyid=E59C3964-672D-4511-BB3E-2D5E1DB91038&amp;amp;displaylang=en Internet Explorer Developer Toolbar] for a similar tool for Microsoft Internet Explorer&lt;br /&gt;
* [http://www.sitepoint.com/blogs/2010/03/23/chrome-web-developer-toolbar/ &amp;quot;The Web Developer Toolbar Comes to Chrome&amp;quot;] &lt;br /&gt;
&lt;br /&gt;
[[Category:Developer tools]]&lt;br /&gt;
[[Category:Themes]]&lt;br /&gt;
[[Category:Firefox extensions]]&lt;/div&gt;</summary>
		<author><name>Deraadt</name></author>
	</entry>
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