Markdown conversion for pt-BR - Cleanup - Performance section

files/pt-br/web/performance/index.html

@@ -19,7 +19,7 @@
   - Web Performance
 translation_of: Web/Performance
 ---
-<p><span class="seoSummary">Web performance is the objective measurements and the perceived user experience of load time and runtime. Web performance is how long a site takes to load, become interactive and responsive, and how smooth the content is during user interactions </span>- is the scrolling smooth? are buttons clickable? Are pop-ups quick to load and display, and do they animate smoothly as they do so? Web performance includes both objective measurements like time to load, frames per second, and time to become interactive, and subjective experiences of how long it felt like it took the content to load.</p>
+<p>Web performance is the objective measurements and the perceived user experience of load time and runtime. Web performance is how long a site takes to load, become interactive and responsive, and how smooth the content is during user interactions - is the scrolling smooth? are buttons clickable? Are pop-ups quick to load and display, and do they animate smoothly as they do so? Web performance includes both objective measurements like time to load, frames per second, and time to become interactive, and subjective experiences of how long it felt like it took the content to load.</p>
 
 <p>The longer it takes for a site to respond, the more users will abandon the site. It is important to minimize the loading and response times and add additional features to conceal latency by making the experience as available and interactive as possible, as soon as possible, while asynchronously loading in the longer tail parts of the experience.</p>
 
@@ -29,8 +29,6 @@ <h2 id="Key_performance_guides">Key performance guides</h2>
 
 <p>{{LandingPageListSubpages}}</p>
 
-<div class="cleared topicpage-table">
-<div class="section">
 <h2 id="Beginners_tutorials">Beginner's tutorials</h2>
 
 <p>The MDN <a href="/en-US/docs/Learn/Performance">Web Performance Learning Area</a> contains modern, up-to-date tutorials covering Performance essentials. Start here if you are a newcomer to performance:</p>
@@ -43,7 +41,7 @@ <h2 id="Beginners_tutorials">Beginner's tutorials</h2>
  <dd>This article starts the module off with a good look at what performance actually is — this includes the tools, metrics, APIs, networks, and groups of people we need to consider when thinking about performance, and how we can make performance part of our web development workflow.</dd>
  <dt><a href="/en-US/docs/Learn/Performance/Perceived_performance">How do users perceive performance?</a></dt>
  <dd>
- <p>More important than how fast your website is in milliseconds, is how fast your users perceive your site to be. These perceptions are impacted by actual p<span style="letter-spacing: -0.00278rem;">age load time, idling, responsiveness to user interaction, and the smoothness of scrolling and other animations. In this article, we discuss the various loading metrics, animation, and responsiveness metrics, along with best practices to improve user perception, if not the actual timings.</span></p>
+ <p>More important than how fast your website is in milliseconds, is how fast your users perceive your site to be. These perceptions are impacted by actual page load time, idling, responsiveness to user interaction, and the smoothness of scrolling and other animations. In this article, we discuss the various loading metrics, animation, and responsiveness metrics, along with best practices to improve user perception, if not the actual timings.</p>
  </dd>
  <dt><a href="/en-US/docs/Learn/Performance/Web_Performance_Basics">Web performance basics</a></dt>
  <dd>In addition to the front end components of HTML, CSS, JavaScript, and media files, there are features that can make applications slower and features that can make applications subjectively and objectively faster. There are many APIs, developer tools, best practices, and bad practices relating to web performance. Here we'll introduce many of these features ad the basic level and provide links to deeper dives to improve performance for each topic.</dd>
@@ -59,12 +57,7 @@ <h2 id="Beginners_tutorials">Beginner's tutorials</h2>
  <dd>With web access on mobile devices being so popular, and all mobile platforms having fully-fledged web browsers, but possibly limited bandwidth, CPU and battery life, it is important to consider the performance of your web content on these platforms. This article looks at mobile-specific performance considerations.</dd>
 </dl>
 
-<dl>
-</dl>
-</div>
-
-<div class="section">
-<h2 class="Other_documentation" id="Other_documentation" name="Other_documentation">Using Performance APIs</h2>
+<h2>Using Performance APIs</h2>
 
 <dl>
  <dt><a href="/en-US/docs/Web/API/Performance_API/Using_the_Performance_API">Performance API</a></dt>
@@ -83,20 +76,17 @@ <h2 class="Other_documentation" id="Other_documentation" name="Other_documentati
  <dd>Learn to time element visibility with the <a href="https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API">Intersection Observer API</a> and be asynchronously notified when elements of interest becomes visible.</dd>
 </dl>
 
-<h2 class="Other_documentation" id="Other_documentation" name="Other_documentation">Other documentation</h2>
+<h2>Other documentation</h2>
 
 <dl>
  <dt><a href="/en-US/docs/Tools/Performance">Developer Tools Performance Features</a></dt>
  <dd>This section provides information on how to use and understand the performance features in your developer tools, including <a href="/en-US/docs/Tools/Performance/Waterfall">Waterfall</a>, <a href="/en-US/docs/Tools/Performance/Call_Tree">Call Tree</a>, and <a href="/en-US/docs/Tools/Performance/Flame_Chart">Flame Charts</a>.</dd>
  <dt><a href="/en-US/docs/Mozilla/Performance/Profiling_with_the_Built-in_Profiler">Profiling with the built-in profiler</a></dt>
  <dd>Learn how to profile app performance with Firefox's built-in profiler.</dd>
 </dl>
-</div>
-</div>
 
 <h2 id="Glossary_Terms">Glossary Terms</h2>
 
-<div class="index">
 <ul class="index">
  <li>{{glossary('Beacon')}}</li>
  <li>{{glossary('Brotli compression')}}</li>
@@ -148,26 +138,21 @@ <h2 id="Glossary_Terms">Glossary Terms</h2>
  <li>{{glossary('Tree shaking')}}</li>
  <li>{{glossary('Web performance')}}</li>
 </ul>
-</div>
 
 <h2 id="Documents_yet_to_be_written">Documents yet to be written</h2>
 
 <dl>
  <dt><a href="/en-US/docs/Learn/Performance/JavaScript">JavaScript performance best practices</a></dt>
- <dd>JavaScript, when used properly, can allow for interactive and immersive web experiences ... or it can significantly harm download time, render time, in app performance, battery life, and user experience. <span class="veryhardreadability"><span><span>This article outlines some JavaScript best practices that can ensure even complex content's performance is the highest possible.</span></span></span></dd>
+ <dd>JavaScript, when used properly, can allow for interactive and immersive web experiences ... or it can significantly harm download time, render time, in app performance, battery life, and user experience. This article outlines some JavaScript best practices that can ensure even complex content's performance is the highest possible.</dd>
  <dt><a href="/en-US/docs/Learn/Performance/Mobile">Mobile performance</a></dt>
  <dd>With web access on mobile devices being so popular, and all mobile platforms having fully-fledged web browsers, but possibly limited bandwidth, CPU, and battery life, it is important to consider the performance of your web content on these platforms. This article also looks at mobile-specific performance considerations.</dd>
  <dt>Web font performance</dt>
  <dd>An often overlooked aspect of performance landscape are web fonts. Web fonts are more prominent in web design than ever, yet many developers simply embed them from a third party service and think nothing of it. In this article, we'll covers methods for getting your font files as small as possible with efficient file formats and sub setting. From there, we'll go on to talk about how browsers text, and how you can use CSS and JavaScript features to ensure your fonts render quickly, and with minimal disruption to the user experience.</dd>
  <dt>Performance bottlenecks</dt>
- <dd></dd>
+ <dd>…</dd>
  <dt>Understanding bandwidth</dt>
- <dd>
- <div>
- <div class="public-DraftStyleDefault-block public-DraftStyleDefault-ltr"><span><span>Bandwidth is the amount of data measured in Megabits(Mb) or Kilobits(Kb) that one can send per second. </span></span><span class="veryhardreadability"><span><span>This article explains the role of bandwidth in media-rich internet applications, how you can measure it, and how you can optimize applications to make the best use of available bandwidth</span></span></span><span><span>.</span></span></div>
- </div>
+ <dd>Bandwidth is the amount of data measured in Megabits(Mb) or Kilobits(Kb) that one can send per second. This article explains the role of bandwidth in media-rich internet applications, how you can measure it, and how you can optimize applications to make the best use of available bandwidth
  </dd>
- <dd></dd>
  <dt>The role of TLS in performance</dt>
  <dd>
  <p>TLS—or HTTPS as we tend to call it—is crucial in creating secure and safe user experiences. While hardware has reduced the negative impacts TLS has had on server performance, it still represents a substantial slice of the time we spend waiting for browsers to connect to servers. This article explains the TLS handshake process, and offers some tips for reducing this time, such as OCSP stapling, HSTS preload headers, and the potential role of resource hints in masking TLS latency for third parties.</p>
@@ -177,7 +162,7 @@ <h2 id="Documents_yet_to_be_written">Documents yet to be written</h2>
  <dt>Alternative media formats</dt>
  <dd>When it comes to images and videos, there are more formats than you're likely aware of. Some of these formats can take your highly optimized media-rich pages even further by offering additional reductions in file size. In this guide we'll discuss some alternative media formats, how to use them responsibly so that non-supporting browsers don't get left out in the cold, and some advanced guidance on transcoding your existing assets to them.</dd>
  <dt>Analyzing JavaScript bundles</dt>
- <dd>No doubt, JavaScript is a big part of modern web development. While you should always strive to reduce the amount of JavaScript you use in your applications, it can be difficult to know where to start. <span class="veryhardreadability"><span><span>In this guide, we'll show you how to analyze your application's script bundles, so you know </span></span><em><span>what</span></em><span><span> you're using, as well how to detect if your app contains duplicated scripts between bundles</span></span></span><span><span>.</span></span></dd>
+ <dd>No doubt, JavaScript is a big part of modern web development. While you should always strive to reduce the amount of JavaScript you use in your applications, it can be difficult to know where to start. In this guide, we'll show you how to analyze your application's script bundles, so you know <em>what</em> you're using, as well how to detect if your app contains duplicated scripts between bundles.</dd>
  <dt><a href="/en-US/docs/Web/Performance/Lazy_loading">Lazy loading</a></dt>
  <dd>It isn't always necessary to load all of a web applications assets on initial page load. Lazy Loading is deferring the loading of assets on a page, such as scripts, images, etc., on a page to a later point in time i.e when those assets are actually needed.</dd>
  <dt>Lazy-loading JavaScript with dynamic imports</dt>