Guancha.cn 观察者网-中国关怀 全球视野
观察者网，致力于荟萃中外思想者精华，鼓励青年学人探索，建中西文化交流平台，为崛起中的精英提供决策参考。
guancha.cn Mobile Performance
39/100
These metrics represent real-world Chrome users experience viewing guancha.cn on mobile devices. Reports are focused on loading performance and other critical factors that most affect user experience. Follow our guide to track, optimize, and improve the quality of your web pages.
User Loading Experience
First Contentful Paint
Largest Contentful Paint
Cumulative Layout Shift
First Input Delay
Metrics
Largest Contentful Paint3/100 8.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint32/100 4.8 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Time to Interactive39/100 8.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time54/100 570 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Speed Index60/100 5.2 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Cumulative Layout Shift100/100 0.02
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (14)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Eliminate render-blocking resources
Potential savings of 540 ms
540 ms
Enable text compression
Potential savings of 20 KiB
300 ms
Remove unused JavaScript
Potential savings of 21 KiB
150 ms
Serve images in next-gen formats
Potential savings of 22 KiB
150 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid `document.write()`
Does not use passive listeners to improve scrolling performance
Minimize main-thread work
9.5 s
Serve static assets with an efficient cache policy
31 resources found
Reduce JavaScript execution time
1.6 s
Avoid chaining critical requests
19 chains found
Avoid long main-thread tasks
20 long tasks found
Keep request counts low and transfer sizes small
87 requests • 643 KiB
Avoid large layout shifts
5 elements found
Largest Contentful Paint element
1 element found
Passed Audits (15)
Preconnect to required origins
Preload key requests
Minimize third-party usage
Third-party code blocked the main thread for 160 ms
Avoid multiple page redirects
Avoids enormous network payloads
Total size was 643 KiB
All text remains visible during webfont loads
Defer offscreen images
Remove unused CSS
Initial server response time was short
Root document took 370 ms
Use video formats for animated content
Properly size images
Minify JavaScript
Efficiently encode images
Potential savings of 17 KiB
Avoids an excessive DOM size
336 elements
Minify CSS
guancha.cn Mobile SEO
85/100
These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more. Run these additional validators on your site to check additional SEO best practices.
Should Fix (2)
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have `[alt]` attributes
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Passed Audits (11)
Document has a valid `rel=canonical`
Document has a meta description
Links have descriptive text
Page has successful HTTP status code
Document has a `<title>` element
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a valid `hreflang`
Document avoids plugins
Document uses legible font sizes
100% legible text
Tap targets are sized appropriately
100% appropriately sized tap targets
Page isn’t blocked from indexing
guancha.cn Mobile Best Practices
69/100
These checks highlight opportunities to improve the overall code health of guancha.cn mobile page. Current recommendations will help to make your page fast and secure, to create a good user experience and to avoid deprecated technologies.
Should Fix (4)
Trust and Safety
Links to cross-origin destinations are unsafe
Includes front-end JavaScript libraries with known security vulnerabilities
4 vulnerabilities detected
Does not use HTTPS
6 insecure requests found
General
Browser errors were logged to the console
Passed Audits (10)
Serves images with appropriate resolution
Avoids requesting the geolocation permission on page load
Displays images with correct aspect ratio
Allows users to paste into password fields
Avoids Application Cache
Page has the HTML doctype
Avoids deprecated APIs
Properly defines charset
Detected JavaScript libraries
Avoids requesting the notification permission on page load
guancha.cn Mobile Progressive Web App
50/100
These checks validate the aspects of a Progressive Web App. Learn more. These checks are required by the baseline PWA Checklist but are not automatically checked by Lighthouse. They do not affect your score but it's important that you verify them manually.
Should Fix (8)
PWA Optimized
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
Manifest doesn't have a maskable icon
Installable
Does not use HTTPS
6 insecure requests found
Does not register a service worker that controls page and `start_url`
Web app manifest does not meet the installability requirements
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Passed Audits (6)
Contains some content when JavaScript is not available
Content is sized correctly for the viewport
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Provides a valid `apple-touch-icon`
Page load is fast enough on mobile networks
guancha.cn Mobile Accessibility
51/100
These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged. These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
Should Fix (4)
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Image elements do not have `[alt]` attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
`<html>` element does not have a `[lang]` attribute
Passed Audits (7)
The page contains a heading, skip link, or landmark region
Heading elements appear in a sequentially-descending order
Document has a `<title>` element
Background and foreground colors have a sufficient contrast ratio
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`[aria-hidden="true"]` is not present on the document `<body>`
Mobile Usability
99/100
These checks validate how easily a visitor can use guancha.cn on a mobile device. Test results include a list of any mobile usability problems. Mobile usability problems are issues that can affect a user that visits the page on a mobile (small screen) device, including small font sizes (which are hard to read on a small screen).
Should Fix (1)
Size tap targets appropriately
Passed Audits (5)
Avoid app install interstitials that hide content
Avoid plugins
Configure the viewport
Size content to viewport
Use legible font sizes
Mobile Speed
63/100
These checks analyze the performance of guancha.cn on mobile devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (7)
Avoid landing page redirects
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Enable compression
Optimize images
Minify JavaScript
Minify CSS
Passed Audits (3)
Reduce server response time
Minify HTML
Prioritize visible content
www.guancha.com
www.guancha.net
www.guancha.org
www.guancha.info
www.guancha.biz
www.guancha.us
www.guancha.mobi
www.uancha.cn
www.guancha.cn
www.fuancha.cn
www.gfuancha.cn
www.fguancha.cn
www.vuancha.cn
www.gvuancha.cn
www.vguancha.cn
www.tuancha.cn
www.gtuancha.cn
www.tguancha.cn
www.buancha.cn
www.gbuancha.cn
www.bguancha.cn
www.yuancha.cn
www.gyuancha.cn
www.yguancha.cn
www.huancha.cn
www.ghuancha.cn
www.hguancha.cn
www.gancha.cn
www.gyancha.cn
www.guyancha.cn
www.ghancha.cn
www.guhancha.cn
www.gjancha.cn
www.gujancha.cn
www.gjuancha.cn
www.giancha.cn
www.guiancha.cn
www.giuancha.cn
www.guncha.cn
www.guqncha.cn
www.guaqncha.cn
www.guqancha.cn
www.guwncha.cn
www.guawncha.cn
www.guwancha.cn
www.gusncha.cn
www.guasncha.cn
www.gusancha.cn
www.guzncha.cn
www.guazncha.cn
www.guzancha.cn
www.guacha.cn
www.guabcha.cn
www.guanbcha.cn
www.guabncha.cn
www.guahcha.cn
www.guanhcha.cn
www.guahncha.cn
www.guajcha.cn
www.guanjcha.cn
www.guajncha.cn
www.guamcha.cn
www.guanmcha.cn
www.guamncha.cn
www.guanha.cn
www.guanxha.cn
www.guancxha.cn
www.guanxcha.cn
www.guandha.cn
www.guancdha.cn
www.guandcha.cn
www.guanfha.cn
www.guancfha.cn
www.guanfcha.cn
www.guanvha.cn
www.guancvha.cn
www.guanvcha.cn
www.guanca.cn
www.guancba.cn
www.guanchba.cn
www.guancbha.cn
www.guancga.cn
www.guanchga.cn
www.guancgha.cn
www.guancya.cn
www.guanchya.cn
www.guancyha.cn
www.guancua.cn
www.guanchua.cn
www.guancuha.cn
www.guancja.cn
www.guanchja.cn
www.guancjha.cn
www.guancna.cn
www.guanchna.cn
www.guancnha.cn
www.guanch.cn
www.guanchq.cn
www.guanchaq.cn
www.guanchqa.cn
www.guanchw.cn
www.guanchaw.cn
www.guanchwa.cn
www.guanchs.cn
www.guanchas.cn
www.guanchsa.cn
www.guanchz.cn
www.guanchaz.cn
www.guanchza.cn
www.guancha.net
www.guancha.org
www.guancha.info
www.guancha.biz
www.guancha.us
www.guancha.mobi
www.uancha.cn
www.guancha.cn
www.fuancha.cn
www.gfuancha.cn
www.fguancha.cn
www.vuancha.cn
www.gvuancha.cn
www.vguancha.cn
www.tuancha.cn
www.gtuancha.cn
www.tguancha.cn
www.buancha.cn
www.gbuancha.cn
www.bguancha.cn
www.yuancha.cn
www.gyuancha.cn
www.yguancha.cn
www.huancha.cn
www.ghuancha.cn
www.hguancha.cn
www.gancha.cn
www.gyancha.cn
www.guyancha.cn
www.ghancha.cn
www.guhancha.cn
www.gjancha.cn
www.gujancha.cn
www.gjuancha.cn
www.giancha.cn
www.guiancha.cn
www.giuancha.cn
www.guncha.cn
www.guqncha.cn
www.guaqncha.cn
www.guqancha.cn
www.guwncha.cn
www.guawncha.cn
www.guwancha.cn
www.gusncha.cn
www.guasncha.cn
www.gusancha.cn
www.guzncha.cn
www.guazncha.cn
www.guzancha.cn
www.guacha.cn
www.guabcha.cn
www.guanbcha.cn
www.guabncha.cn
www.guahcha.cn
www.guanhcha.cn
www.guahncha.cn
www.guajcha.cn
www.guanjcha.cn
www.guajncha.cn
www.guamcha.cn
www.guanmcha.cn
www.guamncha.cn
www.guanha.cn
www.guanxha.cn
www.guancxha.cn
www.guanxcha.cn
www.guandha.cn
www.guancdha.cn
www.guandcha.cn
www.guanfha.cn
www.guancfha.cn
www.guanfcha.cn
www.guanvha.cn
www.guancvha.cn
www.guanvcha.cn
www.guanca.cn
www.guancba.cn
www.guanchba.cn
www.guancbha.cn
www.guancga.cn
www.guanchga.cn
www.guancgha.cn
www.guancya.cn
www.guanchya.cn
www.guancyha.cn
www.guancua.cn
www.guanchua.cn
www.guancuha.cn
www.guancja.cn
www.guanchja.cn
www.guancjha.cn
www.guancna.cn
www.guanchna.cn
www.guancnha.cn
www.guanch.cn
www.guanchq.cn
www.guanchaq.cn
www.guanchqa.cn
www.guanchw.cn
www.guanchaw.cn
www.guanchwa.cn
www.guanchs.cn
www.guanchas.cn
www.guanchsa.cn
www.guanchz.cn
www.guanchaz.cn
www.guanchza.cn