Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.Detailed Report
Audit breakdown by category with detailed findings.
Performance
Insights
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Performance issues directly impact user engagement and conversion rates.
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling
Performance issues directly impact user engagement and conversion rates.
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
Performance issues directly impact user engagement and conversion rates.
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
Performance issues directly impact user engagement and conversion rates.
Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.
Performance issues directly impact user engagement and conversion rates.
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Performance issues directly impact user engagement and conversion rates.
Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
Performance issues directly impact user engagement and conversion rates.
Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.
Performance issues directly impact user engagement and conversion rates.
A long cache lifetime can speed up repeat visits to your page. Learn more about caching.
Performance issues directly impact user engagement and conversion rates.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| ssl.google-analytics.com/ga.js | 7200.0 s | 17.4 KiB |
| img3.doubanio.com/dae/fundin/piwik.js?s=3 | 43200.0 s | 21.6 KiB |
| /?unit=dale_anonymous_homepage_right_top&bid=BDkQeT9wuXI&... | 0.0 ms | 1.3 KiB |
| /?unit=dale_anonymous_homepage_top_for_crazy_ad&bid=BDkQe... | 0.0 ms | 262 B |
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
ul.market-spu-list > li.main-sku > a > div.market-spu-pic ul.market-spu-list > li.main-sku > a > div.market-spu-pic | img2.doubanio.com/view/treasury_image/raw/public/b89edb8584eed2e.jpg | 309.6 KiB | 251.0 KiB |
ul.market-spu-list > li.main-sku > a > div.market-spu-pic ul.market-spu-list > li.main-sku > a > div.market-spu-pic | img1.doubanio.com/view/treasury_image/raw/public/5eb02da07333479.jpg | 257.9 KiB | 199.3 KiB |
ul.market-spu-list > li.main-sku > a > div.market-spu-pic ul.market-spu-list > li.main-sku > a > div.market-spu-pic | img3.doubanio.com/view/treasury_image/raw/public/a3b47d609c2d91f.jpg | 162.0 KiB | 103.4 KiB |
ul.market-topics > li.market-topic-item > a > div.market-topic-pic ul.market-topics > li.market-topic-item > a > div.market-topic-pic | img3.doubanio.com/view/treasury_image/raw/public/c1ed329330a82aa.jpg | 119.8 KiB | 102.3 KiB |
ul.market-spu-list > li.main-sku > a > div.market-spu-pic ul.market-spu-list > li.main-sku > a > div.market-spu-pic | img3.doubanio.com/view/treasury_image/raw/public/f5c360e88382bb3.jpg | 139.5 KiB | 80.9 KiB |
div.pic > div.pic-wrap > a > img div.pic > div.pic-wrap > a > img | img3.doubanio.com/view/group_topic/large/public/p728079573.jpg | 77.3 KiB | 75.3 KiB |
body > a > img body > a > img | /view/dale-online/dale_ad/public/ae3a38851b28f2c.jpg?comp... | 53.1 KiB | 48.0 KiB |
豆瓣7.0
下载豆瓣 App body > div#anony-reg-new | img9.doubanio.com/view/puppy_image/raw/public/1771365ca98ig9er706.jpg | 167.5 KiB | 32.5 KiB |
豆瓣网 body > div > div#anony-nav > div.site-name | img2.doubanio.com/cuphead/sns-static/anony-home/pics/sitename.png | 5.6 KiB | 4.5 KiB |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| douban.com/ | 685 ms |
| www.douban.com/ | 0.0 ms |
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.
Performance issues directly impact user engagement and conversion rates.
Diagnostics
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /f/accounts/d3f1e496bbba865fc0ad8c2b0480dcb388ced80f/dist... | 86.5 KiB | 43.0 KiB |
| /f/vendors/e258329ca4b2122b4efe53fddc418967441e0e7f/js/do... | 25.1 KiB | 23.2 KiB |
Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /f/vendors/e258329ca4b2122b4efe53fddc418967441e0e7f/js/do... | 25.5 KiB | 7.9 KiB |
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /f/accounts/dc8d8affeae2751e365e9fd4c0022df7e021bd77/dist... | 22.2 KiB | 15.5 KiB |
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
More information about the performance of your application. These numbers don't directly affect the Performance score.
Accessibility
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
Contrast
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
下载豆瓣 App div#anony-reg-new > div.wrapper > div.app > a.lnk-app |
4917篇内容 · 432.4万次浏览 div#hot-topics-mod > ul#hot-topics > li.rec_topics > div.rec_topics_subtitle |
7404篇内容 · 906.3万次浏览 div#hot-topics-mod > ul#hot-topics > li.rec_topics > div.rec_topics_subtitle |
259篇内容 · 74.6万次浏览 div#hot-topics-mod > ul#hot-topics > li.rec_topics > div.rec_topics_subtitle |
6984篇内容 · 12.0万次浏览 div#hot-topics-mod > ul#hot-topics > li.rec_topics > div.rec_topics_subtitle |
84篇内容 · 8.4万次浏览 div#hot-topics-mod > ul#hot-topics > li.rec_topics > div.rec_topics_subtitle |
1.0万+篇内容 · 11.2万次浏览 div#hot-topics-mod > ul#hot-topics > li.rec_topics > div.rec_topics_subtitle |
1086篇内容 · 107.4万次浏览 div#hot-topics-mod > ul#hot-topics > li.rec_topics > div.rec_topics_subtitle |
5496篇内容 · 693.9万次浏览 div#hot-topics-mod > ul#hot-topics > li.rec_topics > div.rec_topics_subtitle |
来自：豆瓣小组 div#1708207985 > div.mod > div.bd > div.source |
661回应 div.note-fl > div.meta > a.rec_nums > span |
834赞 div.note-fl > div.meta > a.rec_nums > span |
141转发 div.note-fl > div.meta > a.rec_nums > span |
来自：豆瓣小组 div#1707761372 > div.mod > div.bd > div.source |
332回应 div.note-fl > div.meta > a.rec_nums > span |
1654赞 div.note-fl > div.meta > a.rec_nums > span |
313转发 div.note-fl > div.meta > a.rec_nums > span |
来自：豆瓣小组 div#1708858472 > div.mod > div.bd > div.source |
17回应 div.note-fl > div.meta > a.rec_nums > span |
171赞 div.note-fl > div.meta > a.rec_nums > span |
33转发 div.note-fl > div.meta > a.rec_nums > span |
生活在农村…隐士
56944 个成员 div.group-list > ul > li > div.info |
今天穿什么
342158 个成员 div.group-list > ul > li > div.info |
午后散文
17287 个成员 div.group-list > ul > li > div.info |
守望者eye
14513 个成员 div.group-list > ul > li > div.info |
怦然心动20岁·冬季版
19018 个成员 div.group-list > ul > li > div.info |
今天和AI互动了吗
20493 个成员 div.group-list > ul > li > div.info |
国粤无双
1983 个成员 div.group-list > ul > li > div.info |
尸体暖暖的
70716 个成员 div.group-list > ul > li > div.info |
每天提前上床N小时我们一起读书
974030 个成员 div.group-list > ul > li > div.info |
心动的信号
156513 个成员 div.group-list > ul > li > div.info |
冰淇淋好吃研究所
109409 个成员 div.group-list > ul > li > div.info |
可以看看你的书架吗
133644 个成员 div.group-list > ul > li > div.info |
乘风破浪的姐姐
18854 个成员 div.group-list > ul > li > div.info |
丧心病狂攒钱小组
697981 个成员 div.group-list > ul > li > div.info |
烂片收集与赏析
49426 个成员 div.group-list > ul > li > div.info |
把周末过好才是正经事
76584 个成员 div.group-list > ul > li > div.info |
豆瓣读书会
278866 个成员 div.group-list > ul > li > div.info |
最近在图书馆借到哪些好书
42185 个成员 div.group-list > ul > li > div.info |
8.6 ul > li > div.rating > i |
选座购票 div.movie-list > ul > li > a.bn-link |
8.3 ul > li > div.rating > i |
选座购票 div.movie-list > ul > li > a.bn-link |
7.6 ul > li > div.rating > i |
选座购票 div.movie-list > ul > li > a.bn-link |
6.0 ul > li > div.rating > i |
选座购票 div.movie-list > ul > li > a.bn-link |
6.7 ul > li > div.rating > i |
选座购票 div.movie-list > ul > li > a.bn-link |
6.9 ul > li > div.rating > i |
选座购票 div.movie-list > ul > li > a.bn-link |
7.4 ul > li > div.rating > i |
选座购票 div.movie-list > ul > li > a.bn-link |
7.0 ul > li > div.rating > i |
选座购票 div.movie-list > ul > li > a.bn-link |
[文学] div.book-cate-mod > div.cate > ul > li.cate-label |
[流行] div.book-cate-mod > div.cate > ul > li.cate-label |
[文化] div.book-cate-mod > div.cate > ul > li.cate-label |
[生活] div.book-cate-mod > div.cate > ul > li.cate-label |
[经管] div.book-cate-mod > div.cate > ul > li.cate-label |
[科技] div.book-cate-mod > div.cate > ul > li.cate-label |
免费试读 div.book-list > ul > li > a.bn-link |
免费试读 div.book-list > ul > li > a.bn-link |
免费试读 div.book-list > ul > li > a.bn-link |
免费试读 div.book-list > ul > li > a.bn-link |
免费试读 div.book-list > ul > li > a.bn-link |
免费试读 div.book-list > ul > li > a.bn-link |
免费试读 div.book-list > ul > li > a.bn-link |
免费试读 div.book-list > ul > li > a.bn-link |
音乐 div.wrapper > div.sidenav > h2.section-title > a |
[风格] div.music-cate-mod > div.cate > ul > li.cate-label |
[地区/语言] div.music-cate-mod > div.cate > ul > li.cate-label |
[艺术家] div.music-cate-mod > div.cate > ul > li.cate-label |
￥118 ul.market-spu-list > li.main-sku > div.market-spu-footer > span.market-spu-price |
￥76 ul.market-spu-list > li.main-sku > div.market-spu-footer > span.market-spu-price |
￥79 ul.market-spu-list > li.main-sku > div.market-spu-footer > span.market-spu-price |
￥108 ul.market-spu-list > li.main-sku > div.market-spu-footer > span.market-spu-price |
更多 div.main > h2 > span.pl > a |
音频专栏 div.main > ul.time-list > li > span.type |
音频专栏 div.main > ul.time-list > li > span.type |
音频专栏 div.main > ul.time-list > li > span.type |
音频专栏 div.main > ul.time-list > li > span.type |
音频专栏 div.main > ul.time-list > li > span.type |
图文专栏 div.main > ul.time-list > li > span.type |
音频专栏 div.main > ul.time-list > li > span.type |
音频专栏 div.main > ul.time-list > li > span.type |
音频专栏 div.main > ul.time-list > li > span.type |
音频专栏 div.main > ul.time-list > li > span.type |
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营业执照 ｜ 京ICP证090015号 ｜ 京I… body > div.wrapper > div#ft > span#icp |
关于豆瓣 · 在豆瓣工作 · 联系我们 · 法律声明 · 帮助中心 · 移动应用 body > div.wrapper > div#ft > span.fright |
These are opportunities to improve the legibility of your content.
Names and labels
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.app > div.app-qr > a#expand-qr > img div.app > div.app-qr > a#expand-qr > img |
div.pic > div.pic-wrap > a > img div.pic > div.pic-wrap > a > img |
li > div.pic > a > img li > div.pic > a > img |
li > div.pic > a > img li > div.pic > a > img |
li > div.pic > a > img li > div.pic > a > img |
li > div.pic > a > img li > div.pic > a > img |
div.wrapper > div#ft > span#icp > img div.wrapper > div#ft > span#icp > img |
div.wrapper > div#ft > span#icp > img div.wrapper > div#ft > span#icp > img |
div.wrapper > div#ft > span#icp > img div.wrapper > div#ft > span#icp > img |
div.wrapper > div#ft > span#icp > img div.wrapper > div#ft > span#icp > img |
Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div#anony-reg-new > div.wrapper > div.login > iframe div#anony-reg-new > div.wrapper > div.login > iframe |
div > div#dale_anonymous_homepage_right_top > div > iframe#dale_anonymous_homepage_right_top_frame div > div#dale_anonymous_homepage_right_top > div > iframe#dale_anonymous_homepage_right_top_frame |
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.wrapper > div.app > div.app-qr > a#expand-qr div.wrapper > div.app > div.app-qr > a#expand-qr |
div.bd > div.pic > div.pic-wrap > a div.bd > div.pic > div.pic-wrap > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
div.apps-list > ul > li > a.lnk-icon div.apps-list > ul > li > a.lnk-icon |
div.mod > ul.market-topics > li.market-topic-item > a div.mod > ul.market-topics > li.market-topic-item > a |
div.main > ul.market-spu-list > li.main-sku > a div.main > ul.market-spu-list > li.main-sku > a |
div.main > ul.market-spu-list > li.main-sku > a div.main > ul.market-spu-list > li.main-sku > a |
div.main > ul.market-spu-list > li.main-sku > a div.main > ul.market-spu-list > li.main-sku > a |
div.main > ul.market-spu-list > li.main-sku > a div.main > ul.market-spu-list > li.main-sku > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
ul > li > div.pic > a ul > li > div.pic > a |
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.
Tables and lists
Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
热门话题 · · · · · · ( 去话题广场 )
慢慢来，是一种对自己的诚意
4917篇内容 · 432.4万次浏览
允许自己慢慢变好，是一种能力
7… div.wrapper > div.side > div.online > ul |
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Best practices
Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
豆瓣FM ul > li > div > a |
王俊凯 Karry Wang ul > li > div.artist > a |
周杰伦 Jay Chou ul > li > div.artist > a |
Gareth.T ul > li > div.artist > a |
Gordon Flanders ul > li > div.artist > a |
Jessie Ware ul > li > div.artist > a |
Yves 이브 ul > li > div.artist > a |
AKMU 乐童音乐家 악동... ul > li > div.artist > a |
音乐» div.cate > ul > li.cate-label > a |
小型现场 div.cate > ul > li > a |
喜剧» div.cate > ul > li.cate-label > a |
脱口秀 div.cate > ul > li > a |
戏剧» div.cate > ul > li.cate-label > a |
话剧 div.cate > ul > li > a |
聚会» div.cate > ul > li.cate-label > a |
生活 div.cate > ul > li > a |
派对 div.cate > ul > li > a |
电影» div.cate > ul > li.cate-label > a |
主题放映 div.cate > ul > li > a |
其他» div.cate > ul > li.cate-label > a |
讲座 div.cate > ul > li > a |
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html.ua-mac html.ua-mac |
These items highlight common accessibility best practices.
Best Practices
SEO
These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.
Crawling and Indexing
Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
div.wrapper > div.app > div.app-qr > a#expand-qr div.wrapper > div.app > div.app-qr > a#expand-qr |
To appear in search results, crawlers need access to your app.
Content Best Practices
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.app > div.app-qr > a#expand-qr > img div.app > div.app-qr > a#expand-qr > img |
div.pic > div.pic-wrap > a > img div.pic > div.pic-wrap > a > img |
li > div.pic > a > img li > div.pic > a > img |
li > div.pic > a > img li > div.pic > a > img |
li > div.pic > a > img li > div.pic > a > img |
li > div.pic > a > img li > div.pic > a > img |
div.wrapper > div#ft > span#icp > img div.wrapper > div#ft > span#icp > img |
div.wrapper > div#ft > span#icp > img div.wrapper > div#ft > span#icp > img |
div.wrapper > div#ft > span#icp > img div.wrapper > div#ft > span#icp > img |
div.wrapper > div#ft > span#icp > img div.wrapper > div#ft > span#icp > img |
Format your HTML in a way that enables crawlers to better understand your app’s content.