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No 301 redirects are in place to redirect traffic to your preferred domain. Pages that load successfully both with and without www. are treated as duplicate content! Not all versions of your page point to the same URL.
ⓘ The owner has associated the following topics to the website.
✅ 21cn.net website speed is fast. Page speed is important for visitors and search engines.
Get insights to improve your page loading time.
This domain loads at the median speed of 0.9 seconds.
21cn.net is faster than approximately 81 percent of the web. Your website page speed needs to be as fast as you can make it, without compromising the customer experience.
A good goal to achieve is a loading time of 2 seconds on desktop and mobile devices.
ⓘ This website is ranked #3.716.019 by Alexa.
This rank is traffic based. The lower the rank is, the better the domain is ranked.
The Doctype is used to instruct web browsers about the document type being used, like for a page, what version of HTML it's written in.
Declaring a doctype helps web browsers to render content correctly, which will give you more consistent results when you are styling your website with CSS.
Google released a new mobile ranking algorithm that expanded the use of mobile-friendliness in its mobile search rankings. With more than half of all Google search queries originating on a mobile device, it is important to make sure your mobile site is optimized for these users.
This website doesn't seem to be optimized for Mobile Visitors.
There is no best color scheme to use, but keep in mind that the bold dominant and accent colors give the website personality and focal points, while the plain background color keeps your visitors' focus on your content or products.
A good text to HTML ratio is anywhere from 25 to 70%.
This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information.
Great, we found headings on this page.
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|2nd level heading|
We found 4 images on this website.
1 ALT attributes are missing on your image tags.
Alternative text allows you to add a description to an image.
Google rely on alternative text attributes to determine relevance to a search query. Alternative text also makes an image more likely to appear in a Google image search.
It looks like you're missing alternative text for 1 images on 21cn.net. Check your website to make sure it's specified for each image on the page.