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+<h1 id="improving-tufte-css-for-jekyll">Improving Tufte CSS for Jekyll</h1>
+<p>2019-11-01</p>
+<p>After creating the ET-Jekyll theme almost two years ago, I finally got around to revamping the structure and improving a lot of minor performance issues. Items that have been surely needing of updates for the last couple of years.</p>
+<h2 id="introductions">Introductions</h2>
+<p>I&#8217;ve always been a sucker for Edward Tufte&#8217;s incredibly simple, yet powerful design work used in his books and handout projects. So, in 2018 I released a Tufte CSS inspired Jekyll theme for the open source community. I called it <a href="https://et-jekyll.netlify.com">ET-Jekyll</a> (so original, I know). Tufte CSS was a great starting point for my Jekyll theme, but there were areas I thought could use some minor improvements.</p>
+<p>Feel free to read all the details on the design here: <a href="https://et-jekyll.netlify.com/et-jekyll-theme/">ET-Jekyll theme details</a></p>
+<h2 id="minor-fixes-one-year-later">Minor Fixes One Year Later</h2>
+<p>When I finally circled back to this project recently, I noticed some minor issues that could be improved right away with little to no effort. Let&#8217;s see the changes made at a glance:</p>
+<ul>
+<li>Sidenote, marginnote and figure element restyling (flexbox)</li>
+<li>Table styling fixes (right alignment issues)</li>
+<li>Switch MathJax over to SVG embeds (performance fixes)</li>
+<li>Simplify HTML skeleton of main pages, remove overkill classes</li>
+<li>Remove lazysizes.js to save on load times</li>
+<li>Fallback on font-display for font loading</li>
+<li>Inline all CSS for faster initial paint</li>
+<li>Minor link :hover coloring (accessibility)</li>
+<li>Add missing image link on example page</li>
+<li>Update details post structure</li>
+</ul>
+<p>You can view all the updates in more detail <a href="https://github.com/bradleytaunt/ET-Jekyll/commit/254f9e8f28764c9525ba7405bbbfa18a3867d241">here</a>.</p>
+<p><strong>So what did this accomplish?</strong> Let&#8217;s break it down below.</p>
+<h2 id="first-contentful-paint-input-delay">First Contentful Paint &#38; Input Delay</h2>
+<p>The new improvements have netted the theme a savings of 300ms on first paint and reduced the input delay by 150ms. Small wins - but wins nonetheless since every millisecond counts.</p>
+<h2 id="fixing-render-blocking-items">Fixing Render Blocking Items</h2>
+<p>The original theme reported a few items that were slowing down the initial render for the end-users:</p>
+<table>
+<thead>
+<tr>
+<th>URL</th>
+<th>Size (KB)</th>
+<th>Savings (ms)</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>&#47;css&#47;style.css</td>
+<td>2.0</td>
+<td>150</td>
+</tr>
+<tr>
+<td>&#47;lazysizes@4.0.1&#47;lazysizes.js</td>
+<td>5.0</td>
+<td>960</td>
+</tr>
+<tr>
+<td>MathJax.js?config=TeX-MML-AM_CHTML</td>
+<td>18.0</td>
+<td>1,260</td>
+</tr>
+</tbody>
+</table>
+<p>These items were resolved by:</p>
+<ul>
+<li>Rendering all styling inline (therefore removing the extra HTTP request)</li>
+<li>Removing the lazysizes library altogether (browsers plan to support lazy loading natively in the future)
+<ul>
+<li>The future plan is to integrate something like Cloudinary for out-of-the-box image processing</li>
+</ul></li>
+<li>Switch over MathJax to render equations as embedded SVGs (saves on bandwidth rendering an entire extra typeface)</li>
+</ul>
+<h2 id="lighthouse-numbers">Lighthouse Numbers</h2>
+<p>Though it might not look like much, the updated theme receives a 4-point boost to its performance rating during a Lighthouse audit. Having a perfect score would be even better, but I can settle for 2-points under (for now).</p>
+<h4 id="old-version">Old Version</h4>
+<table>
+<thead>
+<tr>
+<th>Performance</th>
+<th>Accessibility</th>
+<th>Best Practices</th>
+<th>SEO</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>94</td>
+<td>100</td>
+<td>100</td>
+<td>100</td>
+</tr>
+</tbody>
+</table>
+<h4 id="new-version">New Version</h4>
+<table>
+<thead>
+<tr>
+<th>Performance</th>
+<th>Accessibility</th>
+<th>Best Practices</th>
+<th>SEO</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>98</td>
+<td>100</td>
+<td>100</td>
+<td>100</td>
+</tr>
+</tbody>
+</table>
+<h2 id="final-thoughts">Final Thoughts</h2>
+<p>This project could still use some more fine-tuning, but for now I&#8217;m fairly happy with the outcome. Even the smallest boost in performance and rendering time makes me feel like I accomplished something worthwhile. </p>
+<p>Please don&#8217;t hesitate to suggest features or point out any issues you happen to stumble across if you plan to use ET-Jekyll. Thanks for reading!</p>
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