What is Web 性能分析?

Web 性能分析 is a Chrome extension developed by godis, and its main feature is "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。".

Extension Screenshots

Download Web 性能分析 Extension CRX File

Download Web 性能分析 extension files in crx format, manually install Chrome extensions in the browser, or share the crx files with friends to easily install Chrome extensions.

Extension Usage Instructions

# 性能分析

- 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。

Extension Basic Information

Name	Web 性能分析
ID	mhpaedeeneljbnmhmofceiollddmfjcd
Official URL	https://chromewebstore.google.com/detail/web-%E6%80%A7%E8%83%BD%E5%88%86%E6%9E%90/mhpaedeeneljbnmhmofceiollddmfjcd
Description	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。
File Size	386 KB
Installation Count	463
Current Version	1.0
Last Updated	2020-07-27
Publish Date	2020-07-27
Rating	5.00/5 Total 1 Ratings
Developer	godis
Email	[email protected]
Payment Type	free
Extension Website	https://github.com/Godiswill/web-performance-extension
Help Page URL	https://github.com/Godiswill/web-performance-extension/issues
Supported Languages	zh-CN
manifest.json
{ "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx", "name": "Web \u6027\u80fd\u5206\u6790", "description": "\u5c55\u793a Web \u5e38\u89c1\u5173\u952e\u6027\u80fd\u6307\u6807\uff0c\u9875\u9762\u52a0\u8f7d\u7011\u5e03\u6d41\u548c\u8d44\u6e90\u6570\u636e\u5206\u6790\u7b49\u3002", "version": "1.0", "manifest_version": 2, "content_security_policy": "script-src 'self' 'sha256-GgRxrVOKNdB4LrRsVPDSbzvfdV4UqglmviH9GoBJ5jk='; object-src 'self'", "icons": { "16": "icon.png", "48": "icon.png", "128": "icon.png" }, "browser_action": { "default_icon": "icon.png" }, "content_scripts": [ { "matches": [ "" ], "js": [ "\/static\/js\/content.js" ] } ], "web_accessible_resources": [ "\/static\/css\/content.css" ], "background": { "scripts": [ "\/static\/js\/background.js" ] }, "permissions": [ "contextMenus" ], "homepage_url": "https:\/\/github.com\/Godiswill\/web-performance-extension" }