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Add information about firefox default preferences #2954

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Mar 15, 2021
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Add information about firefox default preferences #2954

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421d906
Add information about firefox default preferences
hamishwillee Mar 8, 2021
a2082d2
Fix up following feedback
hamishwillee Mar 15, 2021
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14 changes: 13 additions & 1 deletion files/en-us/web/http/headers/referrer-policy/index.html
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Expand Up @@ -85,7 +85,7 @@ <h2 id="Integration_with_HTML">Integration with HTML</h2>

<pre class="brush: html">&lt;meta name="referrer" content="origin"&gt;</pre>

<p>Or set it for individual requests with <a href="/en-US/search?q=referrerPolicy">the <code>referrerpolicy</code> attribute</a> on {{HTMLElement("a")}}, {{HTMLElement("area")}}, {{HTMLElement("img")}}, {{HTMLElement("iframe")}}, {{HTMLElement("script")}}, or {{HTMLElement("link")}} elements:</p>
<p>Or set it for individual requests with the <code>referrerpolicy</code> attribute on {{HTMLElement("a")}}, {{HTMLElement("area")}}, {{HTMLElement("img")}}, {{HTMLElement("iframe")}}, {{HTMLElement("script")}}, or {{HTMLElement("link")}} elements:</p>

<pre class="brush: html">&lt;a href="http://example.com" referrerpolicy="origin"&gt;</pre>

Expand Down Expand Up @@ -217,6 +217,18 @@ <h3 id="Specifying_a_fallback_policy">Specifying a fallback policy</h3>

<p class="note">Specifying multiple values is only supported in the <code>Referrer-Policy</code> HTTP header, and not in the <code>referrerpolicy</code> attribute.</p>

<h2 id="Browser-specific_preferencessettings">Browser-specific preferences/settings</h2>
<h3 id="Firefox_preferences">Firefox preferences</h3>

<p>Firefox preferences can be used to configure the <em>default</em> referrer policy. The preference names are version specific:</p>
<ul>
<li>Firefox version 87: <code>network.http.referer.userControlPolicy</code></li>
<li>Firefox versions 59 to 86: <code>network.http.referer.defaultPolicy</code> (and <code>network.http.referer.defaultPolicy.pbmode</code> for private networks)</li>
<li>Firefox versions 53 to 58: <code>network.http.referer.userControlPolicy</code></li>
</ul>
<p>All of these settings take the same set of values: <code>0 = no-referrer</code>, <code>1 = same-origin</code>, <code>2 = strict-origin-when-cross-origin</code>, <code>3 = no-referrer-when-downgrade</code>.</p>


<h2 id="Specifications">Specifications</h2>

<table class="standard-table">
Expand Down