Yyzsheng.com Site Title
文化活动策划-电脑图文设计-深圳亿缘纵生文化科技有限公司
Yyzsheng.com Meta Description
斑马音乐文化科技（深圳）有限公司成立于2017年11月13日，注册地位于深圳市前海深港合作区前湾一路1号A栋201室(入驻深圳市前海商务秘书有限公司)，法定代表人为张小明。经营范围包括一般经营项目是：文化活动策划；电脑图文设计；美术设计；会议策划；展览展示策划；从事广告业务；计算机、网络技术、电子计算机、电子技术、通信技术、自动控制技术领域内的技术研究、技术开发、技术咨询、技术服务、技术转让；市场营销策划；礼仪庆典活动策划；企业形象设计；平面设计；立体设计；网页设计；计算机软硬件及网络设备的研发及销售；教育软件的研发及销售；教育用品、文具、日用百货、办公用品、工艺品（不含象牙及其制品）、电子产品、计算机零配件的销售；个人形象设计；区块链技术研发；在网上从事商贸活动（不含限制项目）；国内贸易；货物及技术进出口业务；信息技术咨询服务；电子产品零售；票务服务。（以上各项涉及法律、行政法规、国务院决定禁止的项目除外，限制的项目须取得许可后方可经营），许可经营项目是：互联网商品零售（许可审批类商品除外）；互联网商品销售（许可审批类商品除外）；信息网络传播视听节目业务；网络音乐服务；网络游戏服务；演出经纪代理服务；营业性文艺表演；音像制品及电子出版物批发。
Yyzsheng.com Test Results
Yyzsheng.com Mobile Performance: 61/100
Quick overview:
First Meaningful Paint
4.0 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric.
Time to Interactive
4.0 s
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.
Tasks
Lists the toplevel main thread tasks that executed during page load.
Final Screenshot
The last screenshot captured of the pageload.
1256164584740
Metrics
Collects all available metrics.
Network Round Trip Times
0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance. Learn more about the Round Trip Time.
Script Treemap Data
Used for treemap app
Network Requests
Lists the network requests that were made during page load.
Server Backend Latencies
490 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance. Learn more about server response time.
Diagnostics
Collection of useful page vitals.
Yyzsheng.com Mobile SEO: 95/100
Quick overview:
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. Learn how to make pages mobile-friendly.
Tap targets are not sized appropriately
40% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), or have enough space around them, to be easy enough to tap without overlapping onto other elements. Learn more about tap targets.
Yyzsheng.com Mobile Best Practices: 73/100
Quick overview:
General
Registers an `unload` listener
The `unload` event does not fire reliably and listening for it can prevent browser optimizations like the Back-Forward Cache. Use `pagehide` or `visibilitychange` events instead. Learn more about unload event listeners
Detected JavaScript libraries
All front-end JavaScript libraries detected on the page. Learn more about this JavaScript library detection diagnostic audit.
Trust and Safety
Does not use HTTPS
29 insecure requests found
All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.
Ensure CSP is effective against XSS attacks
A strong Content Security Policy (CSP) significantly reduces the risk of cross-site scripting (XSS) attacks. Learn how to use a CSP to prevent XSS
Yyzsheng.com Mobile PWA: 38/100
Quick overview:
PWA Optimized
Manifest doesn't have a maskable icon
A maskable icon ensures that the image fills the entire shape without being letterboxed when installing the app on a device. Learn about maskable manifest icons. No manifest was fetched
Does not set a theme color for the address bar.
The browser address bar can be themed to match your site. Learn more about theming the address bar. Failures: No manifest was fetched,
No `<meta name="theme-color">` tag found.
Is not configured for a custom splash screen
A themed splash screen ensures a high-quality experience when users launch your app from their homescreens. Learn more about splash screens. Failures: No manifest was fetched.
Installable
Web app manifest or service worker do not meet the installability requirements
1 reason
Service worker is the technology that enables your app to use many Progressive Web App features, such as offline, add to homescreen, and push notifications. With proper service worker and manifest implementations, browsers can proactively prompt users to add your app to their homescreen, which can lead to higher engagement. Learn more about manifest installability requirements.
Yyzsheng.com Mobile Accessibility: 64/100
Quick overview:
Contrast
These are opportunities to improve the legibility of your content.
Links rely on color to be distinguishable.
Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.
Background and foreground colors do not have a sufficient contrast ratio.
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Document has a main landmark.
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.
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.
Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.
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