展示 Web 常见关键性能指标,页面加载瀑布流和资源数据分析等。
Web 性能分析 Extension
- 关键性能指标。忽略页面卸载时间、重定向时间。
1. 首包:`responseStart - domainLookupStart`
2. 首次渲染/白屏:`responseEnd - fetchStart`
3. 首次可交互:`domInteractive - fetchStart`
4. DOM Ready:`domContentLoadedEventEnd - fetchStart`
5. 页面加载:`loadEventStart - fetchStart`
- 各阶段指标瀑布流
1. unLoad:`unloadEventEnd - unloadEventStart`
2. Redirect:`redirectEnd - redirectStart`
3. AppCache:`domainLookupStart - fetchStart`
4. DNS:`domainLookupEnd - domainLookupStart`
5. TCP:`connectEnd - connectStart`
6. TTFB:`responseStart - requestStart`
7. 数据传输:`responseEnd - responseStart`
8. DOM:`domContentLoadedEventStart - responseEnd`
9. DCL:`domContentLoadedEventEnd - domContentLoadedEventStart`
10. 资源加载:`loadEventStart - domContentLoadedEventEnd`
11. onLoad:`loadEventEnd - loadEventStart`
- 资源分析
1. 首页资源请求数量、加载大小和域名分布情况。
2. 请求资源域名分布,与各个域名平均耗时。
3. 未设置响应头域名分布情况。
4. http 压缩情况,未压缩分布,缓存命中率。
5. 资源类型情况。
6. 抽样10条最耗时的资源和 ajax 请求。
Source Manifest.json
How to download and manually install Web 性能分析 extension for Chrome
Looking for a way to install Web 性能分析 extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.
However, you may need to install Web 性能分析 extensions manually, this article outlines two simple methods to effortlessly install Web 性能分析 extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.
Method 1: Download Web 性能分析 extension and manually install through Drag &Drop
If you ever need to manually install a Web 性能分析 extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.
Step 1: Download the Web 性能分析 Extension by clicking the "Download CRX" button on the website.
Look for the Web 性能分析 extension you wish to install. Go to the website and download the Web 性能分析 extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for Web 性能分析 extension that contains all the data.
Step 2: Extract &Arrange Files
Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.
Step 3: Go to the Chrome Extensions Page
Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.
Step 4: Drag and Drop the Extension
Now, go to the folder where you extracted the Web 性能分析 extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.
Step 5: Complete the Installation
Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.
Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.
Method 2: Download Web 性能分析 extension for Chrome and install in Developer Mode
This is another method to install Web 性能分析 extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.
Step 1: Download the Web 性能分析 extension file
Select and download the Web 性能分析 extension by clicking the 'Download CRX' button on the website.
Step 2: Extract the downloaded contents
Convert the file to a ZIP file if it is in CRX format then extract the Web 性能分析 extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your Web 性能分析 extension running.
Step 3: Open Chrome Extension Setting Page
In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.
Step 4: Enable Developer Mode
After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.
Step 5: Load the Unpacked Extension
Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."
Step 6: Select the Extension Folder
Once the pop-up opens upon clicking Load unpacked, select the Web 性能分析 extension directory and click on the "Select Folder "button.
Step 7: Confirm and Install
After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.
Conclusion
Here we've made a step-by-step guide on How to manually install Web 性能分析 extension in 2 ways. We hope this guide proves helpful.
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User reviews
Derek Wang (ID: 00000091cb2d5ebe) Voted 5 ★ - Updated 06/02/2023