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<title>Web Accessible Resources - Readme</title>
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<h1>Web Accessible Resources Demo</h1>
<p>This demo shows off the core features of web accessible resources.</p>
<p>In this demo we have 4 images (test1.png, etc.) that we want to expose on 2 different websites.
Each website should only be able to load two specific images, but both websites will attempt to
access all 4 images. To do this, we define a set of <a
href="https://developer.chrome.com/docs/extensions/mv3/manifest/web_accessible_resources/"><code>"web_accessable_resources"</code></a>
in our <a href="manifest.json">manifest.json</a>. This object specifies what assets should be
accessible to which external resources.</p>
<p>The first image on each site is statically referenced by the site using a URL in the following
format: <code>chrome-extension://<extension-id>/<image-path></code>. The second image on
each site will only be injected into the page when you click the "Load images" button for that
page. This injection is performed by using <a
href="https://developer.chrome.com/docs/extensions/reference/runtime/#method-getURL">chrome.runtime.getURL()</a>
to build the image's URL at runtime.</p>
<table>
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<th>File</th>
<th>Target domain</th>
<th>Injection method</th>
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<td><code><a href="test1.png">test1.png</a></code></td>
<td>web-accessible-resources-1.glitch.me</td>
<td>Statically referenced</td>
</tr>
<tr>
<td><code><a href="test2.png">test2.png</a></code></td>
<td>web-accessible-resources-1.glitch.me</td>
<td>Dynamically injected</td>
</tr>
<tr>
<td><code><a href="test3.png">test3.png</a></code></td>
<td>web-accessible-resources-2.glitch.me</td>
<td>Statically referenced</td>
</tr>
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<td><code><a href="test4.png">test4.png</a></code></td>
<td>web-accessible-resources-2.glitch.me</td>
<td>Dynamically injected</td>
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<figure>
<figcaption>https://web-accessible-resources-1.glitch.me/ can access images
<a href="test1.png"><code>test1.png</code></a> and <a
href="test2.png"><code>test2.png</code></a></figcaption>
<iframe src="https://web-accessible-resources-1.glitch.me/" width=100% height=200></iframe>
</figure>
<figure>
<figcaption>https://web-accessible-resources-2.glitch.me/ can access images
<a href="test3.png"><code>test3.png</code></a> and <a
href="test4.png"><code>test4.png</code></a></figcaption>
<iframe src="https://web-accessible-resources-2.glitch.me/" width=100% height=200></iframe>
</figure>
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