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This article analyzes "how to improve the signal-to-noise ratio of web pages". The content is detailed and easy to understand. Friends who are interested in "how to improve the signal-to-noise ratio of the web page" can follow the editor's idea to read it slowly and deeply. I hope it will be helpful to everyone after reading. Let's learn more about "how to improve the signal-to-noise ratio of web pages" with the editor.

The signal-to-noise ratio of a web page refers to the ratio of the text content on a web page to all HTML code, which is also the basic knowledge of SEO that we must understand. In terms of the principle of the search engine, the crawling system first downloads the whole web page, then extracts the text content, removes the HTML format after analysis, removes the noise, then divides words, and finally stores it in the index database.

In this process, the search engine will also go through the denoising process, we can obviously know that the higher the signal-to-noise ratio of the web page, the higher the efficiency of the search engine spider crawling, and the search spiders have to deal with a lot of documents every day. How to quickly extract the topic information of web pages is an important task.

In fact, the concept of signal-to-noise ratio comes from acoustics. it originally refers to the ratio of the output audio signal to the noise generated. When applied to the web page, it not only refers to the ratio of all text to code, but also includes the ratio of useful information to useless information in the text content of the current page.

What is useful information, for example, the theme of my article is the signal-to-noise ratio of the web page, the whole article has 1000 words, while all the text content of the current page has 2000 words, and other text has nothing to do with signal-to-noise ratio, then these irrelevant information is noise. Therefore, improving the signal-to-noise ratio of web pages can be divided into two aspects: optimizing code and optimizing content.

First, remove noise code

We know that the first step of search engine denoising is to remove HTML format, so the first step to improve the signal-to-noise ratio of web pages is to optimize HTML code. Why do we often say that web code to comply with W3C standards, code to be concise, to use DIV+CSS, are actually based on this principle.

In fact, many friends just read online articles saying that they want to write code like this, but they don't know why, which is why I suggest you learn SEO principle first (I know that practice is greater than theory, but if there is no theory, how to practice, there is no starting point). The noise removal code includes the following aspects:

(1) to reduce the use of JS, you must use the JS code to encapsulate it.

(2) encapsulate the CSS code.

(3) reduce the nesting of DIV layers (if many friends don't know the principle, they blindly pursue DIV+CSS, but also generate a lot of redundant code. )

(4) reduce the use of pictures and FLASH

Second, remove the noisy content

Similarly, after the search engine extracts the text content of the web page, it also needs to analyze the secondary denoising, that is, to determine the theme of the current web page. So in this process, how do we make search engines more accurately judge the theme of our web pages (that is, the question of relevance), and how to improve the relevance of web pages? Then it is to reduce the noise content of the page.

We are very common on the product detail pages of some e-commerce websites, which may not be noticed by some people who do e-commerce websites SEO. There are some instructions about delivery methods or help information at the bottom of the product introduction content. The existence of these contents not only improves the similarity of each product page, but also reduces the signal-to-noise ratio.

From the perspective of user experience, this information is friendly and enhances the trust of the website, but it has some disadvantages from the point of view of search engines, so we can use IFRAME or JS to encapsulate the call, so that both sides can take care of it. It mainly includes the following aspects:

(1) repeat the content to encapsulate the call

(2) Export unnecessary link list for encapsulation call

(3) streamlining copyright information

(4) increase the text length of relevant content.

The methods are the above, and how to achieve them depends on your own understanding or mastery of the technology. Although we know that the search engine will Denoise the web page in the index preprocessing stage, if we do a good job in improving the signal-to-noise ratio of the web page, on the one hand, it will reduce the workload of the search engine. In order to improve the efficiency of crawling the index on our website, on the one hand, it improves the accuracy of search engine judgment. So, it is conceivable that our web page is more trusted.

On how to improve the signal-to-noise ratio of the web page to share here, I hope that the above content can improve everyone. If you want to learn more knowledge, please pay more attention to the editor's updates. Thank you for following the website!

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