Youyu58.com Site Title

主板，整流桥，电源板，触发板，青岛尤裕电气有限公司

Youyu58.com Meta Description

青岛尤裕电气有限公司成立于2016年01月08日，注册地位于山东省青岛市即墨市黄河三路38号名都苑3区56号，法定代表人为曲元国。经营范围包括文学与影视作品版权交易、电影电视剧制作出品、综艺节目策划制作、动漫制作、影视特效制作服务、影视宣传与出版发行、影视制作人才输出、影视表演人才输出、直播节目制作、明星网红经纪服务、影视艺术活动信息咨询、文化艺术交流策划、公关服务、品牌宣传推广服务、音像制品出版发行、图书编辑与策划、互联网与软件开发经营、新媒体建设与推广运营、VR视频技术开发与服务、人工智能设备生产与销售、其他各类知识产权许可使用（一般科学技术专利、人工智能技术专利、新型实用专利、平面图案专利、文字专利、动漫或有形塑像专利、电动玩具专利、游戏版权许可、电影电视节目及其他类型视频、音频版权许可、医药配方专利许可、教学与训练方法许可使用等）。（依法须经批准的项目，经相关部门批准后方可开展经营活动）

Youyu58.com Test Results

Youyu58.com Mobile Performance: 91/100
Quick overview:
First Meaningful Paint
2.1 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric.
Tasks
Lists the toplevel main thread tasks that executed during page load.
Final Screenshot
The last screenshot captured of the pageload.

188433045710

Diagnostics
Collection of useful page vitals.
Server Backend Latencies
480 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.
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.

Youyu58.com Mobile SEO: 99/100
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
91% 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.

Youyu58.com Mobile Best Practices: 77/100
Quick overview:
Trust and Safety
Does not use HTTPS
25 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
Youyu58.com Mobile PWA: 38/100
Quick overview:
PWA Optimized
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.
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
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.
Youyu58.com Mobile Accessibility: 78/100
Quick overview:
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 have `[alt]` attributes that are redundant text.
Informative elements should aim for short, descriptive alternative text. Alternative text that is exactly the same as the text adjacent to the link or image is potentially confusing for screen reader users, because the text will be read twice. Learn more about the `alt` attribute.
Navigation
These are opportunities to improve keyboard navigation in your application.
The page contains a heading, skip link, or landmark region
Adding ways to bypass repetitive content lets keyboard users navigate the page more efficiently. Learn more about bypass blocks.
Document has a main landmark.
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
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.
Contrast
These are opportunities to improve the legibility of your content.
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.
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