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diff --git a/build/batch-webp-conversion/index.html b/build/batch-webp-conversion/index.html new file mode 100644 index 0000000..a9ce6e2 --- /dev/null +++ b/build/batch-webp-conversion/index.html @@ -0,0 +1,87 @@ +<!doctype html> +<html lang="en" id="top"> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1"> + <link rel="icon" href="data:,"> + <title>Batch Converting Images to webp with macOS Automator</title> + <link href="https://bt.ht/atom.xml" type="application/atom+xml" rel="alternate" title="Atom feed for blog posts" /> + <style>*{box-sizing:border-box;}body{font-family:sans-serif;margin:0 auto;max-width:650px;padding:1rem;}img{max-width:100%;}pre{overflow:auto;}table{text-align:left;width:100%;}</style> +</head> + +<nav> + <a href="#menu">Menu ↓</a> +</nav> + +<main> +<h1>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/UI designer is spent exporting and/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's do just that!</strong></p> +<h2>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> +<p>1) 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/speed/webp/download</a> + - <em>Look for the "Download for macOS link"</em></p> +<p>2) Next we will need to copy the <code>cwebp</code> folder to our <code>/usr/local/bin</code> directory: + - Open macOS Terminal + - Run <code>sudo cp /Downloads/libwebp-1.2.1-mac-10.15/bin/cwebp /usr/local/bin</code> + - <em>Note:</em> if the <code>/usr/local/bin</code> directory doesn't exist, simply create it by running: <code>sudo cd /usr/local && mkdir bin</code></p> +<h2>Creating our custom Automator script</h2> +<p>1) Open the macOS Automator from the Applications folder</p> +<p>2) Select <code>Quick Option</code> from the first prompt</p> +<p>3) Set "Workflow receives current" to <code>image files</code></p> +<p>4) Set the label "in" to <code>Finder</code></p> +<p>5) From the left pane, select "Library > Utilities"</p> +<p>6) From the presented choices in the next pane, drag and drop <code>Run Shell Script</code> into the far right pane</p> +<p>7) Set the area "Pass input" to <code>as arguments</code></p> +<p>8) Enter the following code below as your script and type <code>⌘-S</code> to save (name it something like "Convert to webp")</p> +<pre><code>for f in "$@" +do +/usr/local/bin/cwebp -q 85 "$f" -o "${f%.*}.webp" +done +</code></pre> +<p>For visual reference, it should look something like this:</p> +<p><figure> +<img src="/public/images/automator.png" alt="macOS Automator"> +<figcaption>(<a href="/public/images/automator.webp">link to hi-res image</a>)</figcaption> +</figure></p> +<p>And when right-clicking an image file in the Finder window, it should now give you the option to convert:</p> +<p><figure> +<img src="/public/images/automator-2.png" alt="Right click to convert"> +<figcaption>(<a href="/public/images/automator-2.webp">link to hi-res image</a>)</figcaption> +</figure></p> +<h2>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>~/Library/Services</code> folder and open your custom webp Quick Action in the Automator application. </p> +<p>Simple as that!</p> +<h2>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'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 "Open in Finder" in the error message prompt</li> +<li>Double-click on the <code>cwebp</code> utility to open in Terminal</li> +<li>You'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> +<footer role="contentinfo"> + <h2>Menu Navigation</h2> + <ul id="menu"> + <li><a href="/">Home</a></li> + <li><a href="/projects">Projects</a></li> + <li><a href="/uses">Uses</a></li> + <li><a href="/wiki">Wiki</a></li> + <li><a href="/resume">Resume</a></li> + <li><a href="/colophon">Colophon</a></li> + <li><a href="/now">Now</a></li> + <li><a href="/donate">Donate</a></li> + <li><a href="/atom.xml">RSS</a></li> + <li><a href="#top">↑ Top of the page</a></li> + </ul> + <small> + Built with <a href="https://git.sr.ht/~bt/barf">barf</a>. <br> + Maintained with ♥ for the web. <br> + Proud supporter of <a href="https://usefathom.com/ref/DKHJVX">Fathom</a> & <a href="https://nextdns.io/?from=74d3p3h8">NextDNS</a>. <br> + The content for this site is <a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>.<br> The <a href="https://git.sr.ht/~bt/bt.ht">code for this site</a> is <a href="https://git.sr.ht/~bt/bt.ht/tree/master/item/LICENSE">MIT</a>. + </small> +</footer>
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