Opportunities list – PageSpeed Insights. Interestingly, the fix for deferring offscreen images and removing unused JavaScript was the same. When I clicked to read more about removing unused JavaScript, Google highlighted three JavaScript files to pay attention to. Remove unused JavaScript – PageSpeed InsightsAug 28, 2022 · PageSpeed ist eine "Kategorie" mit 100 möglichen Punkten, die Google mit seinem Tool PageSpeed Insights vergibt. PageSpeed Insights und das Web-Performance-Tool Lighthouse, das es betreibt, nimmt rohe Leistungskennzahlen und wandelt diese in eine Bewertung zwischen 1 und 100 um. The PageSpeed Insights API provides free access to performance monitoring for web pages and returns data with suggestions for how to improve. The V5 API includes lab data from Lighthouse and real-world data from the Chrome User Experience Report (CrUX). Teams use the API to build dashboards, custom reports and custom integrations …In today’s data-driven world, businesses are constantly looking for ways to gain valuable insights and drive growth. With the rise of cloud computing, Azure Data has emerged as a p...Jul 10, 2023 · PageSpeed Insights is pretty easy to use. Just go to Google Page Speed Insights, enter any URL (whether it’s your own or a competitor’s), and click “ Analyze :”. Then, wait for the tool to analyze the webpage. This may take a few seconds to a minute, depending on the complexity of the page and your internet connection speed. Runs PageSpeed analysis on the page at the specified URL, and returns PageSpeed scores, a list of suggestions to make that page faster, and other information. Required query parameters: url Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License , and code samples are licensed under …Google PageSpeed Insights is a pretty standard tool for most SEOs these days, providing a plethora of data on how a webpage renders and potential performance blockers. However, while this tool’s ...Pagespeed Insights là công cụ đến từ nhà phát triển Google với mục đích tối ưu hiệu suất web. Tất cả những điều cần biết về tool này sẽ có trong bài viết của FPT Cloud. Đầu tiên, thông tin tập trung giải thích Pagespeed Insights là gì và các chức năng đem lại.PageSpeed Test is a free tool from cmlabs that you can use to check website performance. This tool helps you monitor the performance of an entire web page on both desktop and mobile devices and provides instructions on how the web page can be improved. The report generated from the Pagespeed test shows lab records that are …Checking Core Web Vitals Using PageSpeed Insight. NB: PageSpeed Insights Field Data is collected over 28 days. If the page is new and if Google is unable to get enough samples for generating aggregated field data, a simulated load of the page is rendered, and the score is displayed. Step 1: Go to PageSpeed Insights ToolPageSpeed Insights (PSI) is a tool for web developers to understand what a page's performance is and how to improve it. It uses Lighthouse to audit the page and identify opportunities to improve performance. It also integrates with the Chrome UX Report (CrUX) to show how real users experience the page and the origin in aggregate. In this guide, learn how …PageSpeed Insights incorporates data from the Chrome User Experience Report to provide real-world performance information for sites, as …Google PageSpeed optimization is an essential part of ranking any blog or website in Google search results. Here’s my step-by-step guide to optimizing your WordPress blog’s page speed and scoring a perfect 100 in …"Access Not Configured. The API (PageSpeed Insights API) is not enabled for your project. Please use the Google Developers Console to update your configuration.Step 2. Reduce CSS and JavaScript. Large and bulky CSS and JavaScript files can significantly slow down your website and lower your Google PageSpeed Insights score. Reducing the size of these files can speed up your website by decreasing the amount of data that needs to be downloaded, parsed, and executed.We would like to show you a description here but the site won’t allow us.使用简介：. 公网：以下以分析掘金网为案例. PageSpeed Insights. 内网：打开 chorme控制台 -- tab切到 Lighthouse -- 点击生成报告. 内网的Lighthouse工具同 公网的 PageSpeed Insights 内容是一样。. 但是是英文版，需要翻译的话：可以导出成HTML，在浏览器打开，在用页面翻译 ...Runs PageSpeed analysis on the page at the specified URL, and returns PageSpeed scores, a list of suggestions to make that page faster, and other information. Required query parameters: url Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License , and code samples are licensed under …To rule out that page rendering is the cause, move your index.html file to somewhere else, and replace it with a dummy index.html, to ensure that page rendering isn't the cause. To rule out an internet backbone outage, switch to a temporary server and move everything there. If Google PageSpeed Insights works, then you know that it was an ...Satellite images are a valuable tool for gaining insight into property and its surroundings. With the right information, you can use satellite images to get a better understanding ...As part of the project, we are also delivering a suite of new granular statistics, analysis, and place-based insight. Some recent successes of the …Jan 19, 2024 · Google PageSpeed, often referred to as Google PageSpeed Insights, is a web performance tool provided by Google that evaluates and scores the speed and usability of a website on both mobile and desktop devices. It provides actionable insights and recommendations to help website owners optimize their pages for faster loading times, leading to ... Nov 3, 2021 · Learn about the latest in PageSpeed Insights to help you better measure and optimize your page and site quality. Over the years, PageSpeed Insights (PSI) has evolved into a one-stop source for both field and lab data . It integrates information from the Chrome UX Report (CrUX) and Lighthouse diagnostics to provide insights that help improve the ... GTmetrix is a free tool to test and monitor your page's performance. Using Lighthouse, GTmetrix generates scores for your pages and offers actionable recommendations on how to optimize them. Opportunities list – PageSpeed Insights. Interestingly, the fix for deferring offscreen images and removing unused JavaScript was the same. When I clicked to read more about removing unused JavaScript, Google highlighted three JavaScript files to pay attention to. Remove unused JavaScript – PageSpeed InsightsThe best way to cheat and mislead PageSpeed Insights is by looking at their user agent string and serving different code. You could, for example, just ship a screenshot instead of any code. No one will notice when running a PageSpeed Insights test. If someone would then use different tools, such as Lighthouse, Webpagetest, Pingdom Tools ...Go to Google Developers PageSpeed Insights tool. Enter your domain where it says " Enter a web page URL ". Select Analyze. View the results. In the results, you can see suggestions for improving both the desktop and mobile versions of your site. Pay special attention to any suggestions to optimize images, leverage browser caching, minify ...Mere om PageSpeed Insights Nyheder Dokumentation Få flere oplysninger om websitets ydeevne Stil spørgsmål om Stack Overflow Mailingliste. Relateret indhold Opdateringer Websiteoptimering Casestudier Podcasts. Opret forbindelse Twitter YouTube. Chrome Firebase Alle produkter. Vilkår og privatlivspolitik.You can use Lighthouse Command Line Interface (CLI) (or run it from NodeJS if you are familiar with that), this is the engine that powers Page Speed Insights. That way you configure CPU slowdown and network latency to closely match how you …8 Apr 2016 ... Autoptimize. Autoptimize speeds up your website by optimizing JS, CSS, images, HTML, Google Fonts and async-ing JS, removing emoji cruft and ...A few seconds delay on a site can lead to a lost customer, a lost sale, or a click away from your content. Enter Google PageSpeed Insights: a tool from the tech giant, Google, designed to offer insights into how well your website is performing speed-wise and where it might be lagging. Now, page speed is a ranking factor. The Need for Speed in …Pagespeed Insights – Passed audits là gì? Trong phần Passed Audits, Pagespeed Insights sẽ đưa ra một bảng tổng hợp về những hiệu năng mà trang web đã đạt được, không cần thiết phải bổ sung hoặc thay đổi. PageSpeed Insights có …This guide examines PageSpeed Insights rules in context: what to pay attention to when optimizing the critical rendering path, and why. Eliminate render-blocking JavaScript and CSS To deliver the fastest time to first render, minimize and (where possible) eliminate the number of critical resources on the page, minimize the number of …Google PageSpeed Insights is a tool that allows you to perform website speed tests and see how your sites are performing in terms of loading time. Sometimes referred to as the Google Developers PageSpeed Insights tool. This free Google tool provides information such as the number of seconds it takes for your pages to load and …ทำให้หน้าเว็บของคุณทำงานได้เร็วขึ้นในอุปกรณ์ทุกชนิดPagespeed Insights là một trong những công cụ được phát triển nhằm mục đích đánh giá, đo lường hiệu suất và tốc độ website được Google giới thiệu vào năm 2010. Nói một cách khác, công cụ này là một bộ tiêu chuẩn đánh giá độ thân thiện của website trên mọi thiết ...Nov 15, 2021 · Since PageSpeed is a performance optimization tool, its recommendations are biased in favor of speed. However, we recognize that web development is complex, and our suggestions might be restrictive for an individual web site. You have to consider the tradeoffs for your own application: some of PageSpeed's recommendations take substantial effort ... Google PageSpeed Insights (PSI) is an in-demand free tool that analyzes webpage performance like page load time, responsiveness, accessibility, visual stability, etc. When you enter the URL of your webpage for analysis, it provides an in-depth report about the performance of your web page. It mentions issues and troubleshooting opportunities ...To rule out that page rendering is the cause, move your index.html file to somewhere else, and replace it with a dummy index.html, to ensure that page rendering isn't the cause. To rule out an internet backbone outage, switch to a temporary server and move everything there. If Google PageSpeed Insights works, then you know that it was an ...Pagespeed Insights là công cụ đến từ nhà phát triển Google với mục đích tối ưu hiệu suất web. Tất cả những điều cần biết về tool này sẽ có trong bài viết của FPT Cloud. Đầu tiên, thông tin tập trung giải thích Pagespeed Insights là gì và các chức năng đem lại.First Contentful Paint. Speed Index. Cumulative Layout Shift. Time To Interactive. When testing a page’s URL, PageSpeed Insights will first produce scores between 0 and 100 for mobile and desktop. A pair of tabs in the top left of the results page allow you to switch between them, displaying the mobile score by default.Google’s PageSpeed Insights, which we highlighted above, might be one of your best guides -- especially if your goal is achieving a high Google page speed score specifically. Some of the other tools listed are also helpful because they can give you a quick rundown of other details related to your site speed.What is Google PageSpeed Score and How to Increase It (2024 Guide) TL;DR: To improve your PageSpeed Insights score, focus on optimizing images, minimizing CSS/JS, and leveraging browser caching. These actions enhance load times, responsiveness, and visual stability, directly influencing user experience and potentially …Google PageSpeed Insights (PSI) is a free performance measurement tool by Google. This tool is helpful for analyzing the page speed of a website or URL on both mobile and desktop devices. No matter what URL you insert in this tool, the PSI will come up with an overall performance score after analyzing various metrics (more on this below).PageSpeed Insights and web.dev launch performance tests using headless/emulated browsers and use network throttling to simulate your page load under different network conditions (i.e., desktop and mobile). You cannot change the test options like location, connection speed, screen resolution, etc.I could be mistaken, but this sounds like something which Litespeeds “Guest Mode” and “Guest Optimisation” would be affecting. Try turning this feature off if ...Google PageSpeed Insights quantifies your webpage performance for mobile and desktop devices. The tool loads your URL twice, with a mobile user-agent and with a desktop user agent. A PageSpeed score of 85 to 100 is a sign that your website has a good performance.ทำให้หน้าเว็บของคุณทำงานได้เร็วขึ้นในอุปกรณ์ทุกชนิด GTmetrix is a free tool to test and monitor your page's performance. Using Lighthouse, GTmetrix generates scores for your pages and offers actionable recommendations on how to optimize them. Question: What is PageSpeed Insights? Answer: PageSpeed Insights is a tool that analyzes the performance and user experience of web pages. It provides a score and recommendations for improving the page speed and core web vitals.Google PageSpeed optimization is an essential part of ranking any blog or website in Google search results. Here’s my step-by-step guide to optimizing your WordPress blog’s page speed and scoring a perfect 100 in …Dec 20, 2023 · PageSpeed Insights vs Lighthouse. Sudah disebutkan sebelumnya bahwa ada tool Google lainnya yang dapat digunakan berdampingan dengan PageSpeed Insights yaitu Lighthouse. Keduanya memiliki peran berbeda sehingga topik pembahasan “PageSpeed Insights vs Lighthouse” pun menjadi informasi relevan yang sedikit banyak dicari oleh pengguna. In today’s fast-paced world, staying informed about the latest financial news is essential for making smart investment decisions. One of the most trusted sources for financial insi...Go to Cloud https://console.developers.google.com. Sign up for an account if necessary. Create a Project. Go to Menu > API Manager > Credentials. Create credentials button > API Key. Copy Key then hit close. Menu > Dashboard > Enable API. Use Search to find PageSpeed insights API and click on it.Communicating Uncertainty: How to better understand an estimate. They may be based on huge datasets calculated with the most robust …PageSpeed Insights uses First Contentful Paint and DOM Content Loaded (FCP and DCL) to determine your page’s load time, but this is based off the Chrome User Experience Report, that collects FCP and DCL data from actual Chrome users worldwide who visit your page. Depending on your median FCP and DCL, your page will be marked …Deprecated.This page was written for version 4 of the PageSpeed Insights API, which is deprecated and will be shut down in May 2019. Version 5 is the latest and provides both real-world data from the Chrome User Experience Report and lab data from Lighthouse.. PageSpeed Insights analyzes a page to see if it follows our …First Contentful Paint. Speed Index. Cumulative Layout Shift. Time To Interactive. When testing a page’s URL, PageSpeed Insights will first produce scores between 0 and 100 for mobile and desktop. A pair of tabs in the top left of the results page allow you to switch between them, displaying the mobile score by default.Itu dia ulasan mengenai Google PageSpeed Insight mulai dari pengertian hingga cara penggunaannya. PSI sendiri penting untuk digunakan dalam pengukuran kecepatan website, sebab data yang ditampilkan pun paling akurat dan lengkap dibandingkan toolsnya lainnya. Selain cara-cara di atas, dalam meningkatkan performa kecepatan website kamu perlu ...This guide examines PageSpeed Insights rules in context: what to pay attention to when optimizing the critical rendering path, and why. Eliminate render-blocking JavaScript and CSS To deliver the fastest time to first render, minimize and (where possible) eliminate the number of critical resources on the page, minimize the number of …Buka Google Pagespeed Insight. Langkah pertama, akses Google Pagespeed Insight dengan mengklik halaman utama PageSpeed Insights hingga muncul tampilan berikut: 2. Masukkan alamat website kamu. Setelah itu, masukkan URL website yang akan dicek kecepatannya dan klik tombol “ANALISIS”. 3. Simak hasil analisis website.PageSpeed Insights Rules. bookmark_border. Deprecated. This page was written for version 4 of the PageSpeed Insights API, which is deprecated and will be shut down in May 2019. Version 5 is the latest and provides both real-world data from the Chrome User Experience Report and lab data from Lighthouse. Avoid landing page redirects.To rule out that page rendering is the cause, move your index.html file to somewhere else, and replace it with a dummy index.html, to ensure that page rendering isn't the cause. To rule out an internet backbone outage, switch to a temporary server and move everything there. If Google PageSpeed Insights works, then you know that it was an ...Nov 15, 2021 · PageSpeed Insights Rules. bookmark_border. Deprecated. This page was written for version 4 of the PageSpeed Insights API, which is deprecated and will be shut down in May 2019. Version 5 is the latest and provides both real-world data from the Chrome User Experience Report and lab data from Lighthouse. Avoid landing page redirects. Pagespeed Insights คืออะไร. Pagespeed Insights คือ เครื่องมือที่ใช้ในการดูข้อมูลเชิงลึกด้านความเร็วของเว็บไซต์ที่จะต้องทำให้ตรงตามเกณฑ์ที่ Google กำหนด จึงจะส่งผลดี ...Mar 14, 2022 · 11 Steps To Improving Google PageSpeed Insights Score. Let’s now look at the steps needed to achieve a better Google PageSpeed Insights Score. 1. Avoid Post-Click Landing Page Redirects. Post-click landing page redirects is the process of sending a user from one web page to another. PageSpeed Insights (PSI) PSI is a tool that reports field data from CrUX and lab from Lighthouse for a given page. See those individual sections for more details. When to use PSI. PSI is great for assessing CrUX performance at the page level or origin-level, for both mobile and desktop users. It's a good choice for an initial overview of Core ...Sorted by: 4. The top part of the report comes from real users visiting your site, while the lower part is a single simulated test of the URL you are interested in. "This URL" is the metrics for the URL you are interested in, and "Origin" is the averages for the whole site. So this sounds like your test URL performs worse than average. Speed Score. PageSpeed Insights incorporates data from the Chrome User Experience Report (CrUX) to display real-world performance data about a page or an origin. PSI reports two metrics: First Contentful Paint (FCP) and DOMContentLoaded (DCL). The median value for each metric (FCP or DCL) is compared to all the pages monitored by the CrUX ... 1. To perform the Google page speed test, enter the desired URL on the PageSpeed Insights website. 2. Press Analyze and let PSI do its analysis. 3. While the report is generated, the tool does two things: First, it gathers ‘field data’ of the web page in the CrUX, i.e., the Chrome User Experience report .The PageSpeed Insights API provides free access to performance monitoring for web pages and returns data with suggestions for how to improve. The V5 API includes lab data from Lighthouse and real-world data from the Chrome User Experience Report (CrUX). Teams use the API to build dashboards, custom reports and custom integrations …Getting PSI into your build process. A sample Gulp project using PSI is available.. If you use Grunt, grunt-pagespeed is a task by James Cryer that uses PSI under the hood. For testing local projects, we recommend using psi-ngrok or ngrok.. Getting filmstrips. Filmstrips are returned by the v5 API as data uri's but the psi tool does not expose them on the cli.PageSpeed Compare makes use of Google PageSpeed Insights which is powered by Lighthouse and Chrome UX Report. Lab data Lighthouse Auditing tool to diagnose issues and identify opportunities to improve the user experience of web pages. Field data Chrome UX Report Provides user experience metrics for how real-world …Make the Web Faster. Insights. PageSpeed Insights. bookmark_border. PageSpeed Insights for Google Chrome has been …Nov 3, 2021 · Learn about the latest in PageSpeed Insights to help you better measure and optimize your page and site quality. Over the years, PageSpeed Insights (PSI) has evolved into a one-stop source for both field and lab data . It integrates information from the Chrome UX Report (CrUX) and Lighthouse diagnostics to provide insights that help improve the ... PageSpeed Insights and web.dev launch performance tests using headless/emulated browsers and use network throttling to simulate your page load under different network conditions (i.e., desktop and mobile). You cannot change the test options like location, connection speed, screen resolution, etc.PageSpeed Insights Speed Score incorporates data from CrUX (Chrome User Experience Report) and reports on two important speed metrics: First Contentful Paint (FCP) and DOMContentLoaded (DCL). SEO best practices. Google has indicated that site speed (and as a result, page speed) is one of the signals used by its algorithm to rank pages.Google PageSpeed Insights is a tool that Google provides to help you measure and improve the page speed of your website. It analyzes and rates …PageSpeed Insights: A Vital Tool – In 2024, Google’s PageSpeed Insights is indispensable for web optimization, influencing SEO rankings and user experience. Image Optimization is Key – Compress and optimize images to reduce load times, enhancing both performance and user satisfaction. Continuous Improvement Matters – Web optimization is ...Nov 15, 2021 · PageSpeed Insights Rules. bookmark_border. Deprecated. This page was written for version 4 of the PageSpeed Insights API, which is deprecated and will be shut down in May 2019. Version 5 is the latest and provides both real-world data from the Chrome User Experience Report and lab data from Lighthouse. Avoid landing page redirects. Google PageSpeed is a family of tools by Google Inc, designed to help a website's performance optimizations. It was introduced at Developer Conference in 2010. There are four main components of PageSpeed family tools: PageSpeed Module, consisting of mod PageSpeed for the Apache HTTP Server and ngx PageSpeed for the Nginx, PageSpeed Insights, …For example, PageSpeed Insights might recommend the use of lighter pictures. Larger images, it might show, weigh the system down and significantly delay response times. PageSpeed Insights might even recommend a plugin to convert too-large images to optimal size for the web. In the same way, other functions can also be analyzed using Google ...Opportunities list – PageSpeed Insights. Interestingly, the fix for deferring offscreen images and removing unused JavaScript was the same. When I clicked to read more about removing unused JavaScript, Google highlighted three JavaScript files to pay attention to. Remove unused JavaScript – PageSpeed InsightsCông cụ Pagespeed Insights sẽ có các tính năng để đánh giá và đưa ra các chỉ số khác nhau về website. Những tính năng chính đó là: Speed Score – Điểm tốc độ: Tính năng này sẽ đánh giá tốc độ website dựa theo thống kế của Lighthouse Lab – một công cụ mã nguồn mở của ...Interpreting PageSpeed Insights Scores Grading System: From Excellent to Poor. PageSpeed Insights assigns scores ranging from 0 to 100, categorizing websites into different performance brackets. A score of 90 or above is considered good. 50 to 89 is a score that needs improvement, and below 50 is considered poor.1 Jan 2021 ... 1. Core Web Vitals · Largest Contentful Paint The main content of the page has most likely loaded at this point in the page load timeline, which ...PageSpeed Insights incorporates data from the Chrome User Experience Report to provide real-world performance information for sites, as …Make the Web Faster. Insights. PageSpeed Insights. bookmark_border. PageSpeed Insights for Google Chrome has been …The most popular tool to test your site’s speed is the Google PageSpeed Insights tool. This is the best way to know exactly what Google …
For example, If we look at PageSpeed Insights (PSI) & Lighthouse, Google recently launched the speed update to their core algorithm so these scores (while fairly general) will become increasingly valuable metrics to measure page performance and recommend optimisations appropriately. So, in order to bulk test multiple URLs at once, just follow .... Excepsure insurance
Have you ever wondered how visitors interact with your website? Do you want to know which areas of your site are grabbing their attention and which ones are being ignored? A free h...If you’re looking to improve your Adobe Photoshop skills, then these tips are most definitely going to help you out. By following these tips, you’ll be able to create graphics that...Interpreting PageSpeed Insights Scores Grading System: From Excellent to Poor. PageSpeed Insights assigns scores ranging from 0 to 100, categorizing websites into different performance brackets. A score of 90 or above is considered good. 50 to 89 is a score that needs improvement, and below 50 is considered poor.We would like to show you a description here but the site won’t allow us.The PageSpeed Insights API lets you analyze the performance of your website with a simple API. It offers tailored suggestions for how you can …As mentioned , PageSpeed Insights focuses entirely on performance and uses a mix of lab and real world data to build a comprehensive report on the speed of a website with metrics like Web Vitals.Lighthouse measures other things on top of performance but can only do so with lab data under consistent conditions so may not be a true reflection on the speed of …Aug 16, 2023 · PageSpeed Insights (PSI) is a free tool offered by Google that analyzes the user experience of a web page (performance, accessibility, SEO etc.), on both mobile and desktop devices. PSI also provides optimization opportunities and offers suggestions for improving the loading speed of the page tested. To evaluate a page, Google PageSpeed ... Feb 6, 2024 · PageSpeed Insights: A Vital Tool – In 2024, Google’s PageSpeed Insights is indispensable for web optimization, influencing SEO rankings and user experience. Image Optimization is Key – Compress and optimize images to reduce load times, enhancing both performance and user satisfaction. Continuous Improvement Matters – Web optimization is ... PageSpeed Insights. Link kopieren. Dokumentation. Auf dieser Website werden Cookies von Google verwendet, um Dienste bereitzustellen und Zugriffe zu analysieren. ... あらゆるデバイスでウェブページの読み込み時間を短くしましょう. 詳細をチェック. 最新ニュース. ドキュメント. ウェブ パフォーマンスについて.TestMySite: Allows you to diagnose webpage performance across devices and provides a list of fixes for improving the experience from Webpagetest and PageSpeed Insights. PageSpeed Insights: Shows speed field data for your site, alongside suggestions for common optimizations to improve it.Pagespeed Insights là một trong những công cụ được phát triển nhằm mục đích đánh giá, đo lường hiệu suất và tốc độ website được Google giới thiệu vào năm 2010. Nói một cách khác, công cụ này là một bộ tiêu chuẩn đánh giá độ thân thiện của website trên mọi thiết ...A few seconds delay on a site can lead to a lost customer, a lost sale, or a click away from your content. Enter Google PageSpeed Insights: a tool from the tech giant, Google, designed to offer insights into how well your website is performing speed-wise and where it might be lagging. Now, page speed is a ranking factor. The Need for Speed in …Deprecated.This page was written for version 4 of the PageSpeed Insights API, which is deprecated and will be shut down in May 2019. Version 5 is the latest and provides both real-world data from the Chrome User Experience Report and lab data from Lighthouse. This rule triggers when PageSpeed Insights detects that compressible …15 Feb 2023 ... Learn how to do a website speed test with Google PageSpeed insights in this tutorial. You can analyse your own website or any other by ...あらゆるデバイスでウェブページの読み込み時間を短くしましょう. 詳細をチェック. 最新ニュース. ドキュメント. ウェブ パフォーマンスについて..