Yuduzhouxing.com Site Title

定制开发erp系统，APP开发定制，张家口玉渡舟星智能网络科技有限公司

Yuduzhouxing.com Meta Description

张家口玉渡舟星智能网络科技有限公司成立于2019年04月12日，注册地位于河北省张家口市宣化区洋河南镇头台子村洋鑫公寓小区3号楼1-201（仅限办公），法定代表人为李新。经营范围包括计算机网络技术开发、技术服务；弱电工程、安防工程、楼梯亮化工程的设计、施工；智能家居设计、安装、维修、销售；网络电子产品的安装、维修、销售；安防产品、电子产品、日用百货的销售；广告设计、制作、代理、发布；代理联通业务受理、代收费及手机销售业务（以中国联通宣化分公司授权书为准），代理电信宽带业务、CDMA业务、电信卡销售、代收通信费用以及通信终端销售（以中国电信宣化分公司授权书为准）；文艺创作服务；组织文化艺术交流活动；营业性演出服务；音乐创作；单纯的音像制品制作；舞台灯光音响的设计；演出服装的租赁；演出道具、灯光、音响装置的租赁、安装及提供演出设备的技术咨询服务；会议及展览展示服务；大型活动组织策划服务；市场营销策划服务；票务代理服务；演出经纪代理服务；文化娱乐经纪人服务。（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）

Yuduzhouxing.com Test Results

Yuduzhouxing.com Mobile Performance: 99/100
Quick overview:
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Serve images in next-gen formats
Potential savings of 423 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption. Learn more about modern image formats.
Properly size images
Potential savings of 406 KiB
Serve images that are appropriately-sized to save cellular data and improve load time. Learn how to size images.
Image elements do not have explicit `width` and `height`
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Eliminate render-blocking resources
Potential savings of 0 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles. Learn how to eliminate render-blocking resources.
Serve static assets with an efficient cache policy
26 resources found
A long cache lifetime can speed up repeat visits to your page. Learn more about efficient cache policies.
Defer offscreen images
Potential savings of 15 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive. Learn how to defer offscreen images.

Yuduzhouxing.com Mobile SEO: 100/100
Quick overview:

Yuduzhouxing.com Mobile Best Practices: 79/100
Quick overview:
Trust and Safety
Does not redirect HTTP traffic to HTTPS
Make sure that you redirect all HTTP traffic to HTTPS in order to enable secure web features for all your users. Learn more.
Does not use HTTPS
27 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.
Yuduzhouxing.com Mobile Accessibility: 86/100
Quick overview:
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.
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.
Links do not have a discernible name
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.
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