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authorBradley Taunt <bt@btxx.org>2024-07-02 14:22:21 -0400
committerBradley Taunt <bt@btxx.org>2024-07-02 14:22:21 -0400
commit3f6a9546ec13063d0d5bdf21d30a93d3e8aa6050 (patch)
tree947985c4eda1bceb1910bc01739c32fd0baad181 /build/posts/batch-webp-conversion
parent14074019d62d98885c4c764401a9e7e1fd129f79 (diff)
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-<h1 id="batch-converting-images-to-webp-with-macos-automator">Batch Converting Images to webp with macOS Automator</h1>
-<p>2021-10-15</p>
-<p>A great deal of my time working as a web&#47;UI designer is spent exporting and&#47;or converting images for software products and websites. Although a lot of modern applications can render image conversions at build time, a custom conversion is sometimes requested for an image to be set as <code>webp</code>.</p>
-<p>You <em>could</em> download one of the many native apps from the Mac App Store to do this for you - but why not create your own script and run it with a simple right-click directly inside Finder? <strong>Let&#8217;s do just that!</strong></p>
-<h2 id="basic-requirements">Basic requirements</h2>
-<p><strong>Important!</strong>: As of this time of writing, the official <code>libwebp</code> package release is <em>libwebp-1.2.1-mac-10.15</em>. If this has been updated since then, change the command below to match that of the proper release version.</p>
-<ol>
-<li>First you will need to download the <code>libwebp</code> package to your Downloads folder: <a href="https://developers.google.com/speed/webp/download">developers.google.com&#47;speed&#47;webp&#47;download</a>
-<ul>
-<li><em>Look for the &#8220;Download for macOS link&#8221;</em></li>
-</ul></li>
-<li>Next we will need to copy the <code>cwebp</code> folder to our <code>&#47;usr&#47;local&#47;bin</code> directory:
-<ul>
-<li>Open macOS Terminal</li>
-<li>Run <code>sudo cp &#47;Downloads&#47;libwebp-1.2.1-mac-10.15&#47;bin&#47;cwebp &#47;usr&#47;local&#47;bin</code></li>
-<li><em>Note:</em> if the <code>&#47;usr&#47;local&#47;bin</code> directory doesn&#8217;t exist, simply create it by running: <code>sudo cd &#47;usr&#47;local &#38;&#38; mkdir bin</code></li>
-</ul></li>
-</ol>
-<h2 id="creating-our-custom-automator-script">Creating our custom Automator script</h2>
-<ol>
-<li><p>Open the macOS Automator from the Applications folder</p></li>
-<li><p>Select <code>Quick Option</code> from the first prompt</p></li>
-<li><p>Set &#8220;Workflow receives current&#8221; to <code>image files</code></p></li>
-<li><p>Set the label &#8220;in&#8221; to <code>Finder</code></p></li>
-<li><p>From the left pane, select &#8220;Library &#62; Utilities&#8221;</p></li>
-<li><p>From the presented choices in the next pane, drag and drop <code>Run Shell Script</code> into the far right pane</p></li>
-<li><p>Set the area &#8220;Pass input&#8221; to <code>as arguments</code></p></li>
-<li><p>Enter the following code below as your script and type <code>⌘-S</code> to save (name it something like &#8220;Convert to webp&#8221;)</p></li>
-</ol>
-<pre><code>for f in "$@"
-do
-&#47;usr&#47;local&#47;bin&#47;cwebp -q 85 "$f" -o "${f%.*}.webp"
-done
-</code></pre>
-<p>For visual reference, it should look something like this:</p>
-<p>And when right-clicking an image file in the Finder window, it should now give you the option to convert:</p>
-<h2 id="making-edits-to-your-script">Making edits to your script</h2>
-<p>If you ever have the need to edit this script (for example, changing the default <code>85</code> quality parameter), you will need to navigate to your <code>~&#47;Library&#47;Services</code> folder and open your custom webp Quick Action in the Automator application. </p>
-<p>Simple as that!</p>
-<h2 id="possible-hiccups">Possible Hiccups</h2>
-<p>I was contacted by the very helpful <a href="https://kevq.uk">Kev Quirk</a> about a minor problem he encountered while following this tutorial. When trying to run <code>cwebp</code> he received the following error message:</p>
-<pre><code>cwebp cannot be opened because it&#39;s from an unverified developer
-</code></pre>
-<p>Doing the next steps seemed to have fixed this issue for him:</p>
-<ol>
-<li>Click on the &#8220;Open in Finder&#8221; in the error message prompt</li>
-<li>Double-click on the <code>cwebp</code> utility to open in Terminal</li>
-<li>You&#8217;ll then be prompted with a pop-up asking if you wish to execute</li>
-</ol>
-<p>After following these steps, the issue should be resolved.</p>
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