Deeply understand the TDK mechanism of Anqi CMS

In AnQi CMS, the TDK (Title, Description, Keywords) tags are the core elements of SEO optimization.They correspond to the web page title, page description, and keywords, which directly affect how search engines understand and rank your website content.Homepage TDK settingsThe content is located under 'Background Settings' -> 'Home Page TDK Settings', as well as the editing interfaces for various content (articles, products, single pages, categories, tags, etc.), all of which provide independent SEO title, keywords, and description fields.

This meticulously edited information will eventually be processed throughtdktags, on the front page of the website<head>section, with standard HTML<title>and<meta>Label format output for search engine crawling and parsing.Whether these keywords for search engine optimization can accommodate HTML code or various special characters?This is the key point we will elaborate on in detail.

HTML code support: default security considerations

Directly answer this question: What is the TDK tag content of Anqi CMS?By default, it does not directly support HTML code parsing.This is mainly due to safety considerations and the **practice** of search engines.

The template engine of Anqi CMS (based on Pongo2 in Go language) will default escape HTML content when outputting variables. This means that if you enter something similar in the background TDK field<p>我的标题</p>Such HTML tags, in the final page source code, they will not be interpreted by the browser as paragraph tags, but will be displayed as&lt;p&gt;我的标题&lt;/p&gt;. The angle brackets in it<and>Will be automatically converted to HTML entities&lt;and&gt;.

This default escaping mechanism has several important reasons:

  1. Security (XSS protection)Prevent Cross-Site Scripting (XSS).If the TDK tag directly parses HTML code, malicious users may inject HTML or JavaScript code to hijack user sessions, modify page content, or steal sensitive information.AnQi CMS as an enterprise-level content management system, places security first and effectively avoids such risks through the default escaping mechanism.
  2. SEO** practicesThe mainstream search engines generally recommend that the TDK tag content should be plain text.In the search results page (SERP), the title and description are usually displayed in plain text.If HTML tags are included in TDK, search engines may ignore these tags or display them as escaped characters, which not only occupies limited character length but also makes the search results look unprofessional and unattractive, affecting users' willingness to click.
  3. Data purityKeep the purity of metadata (Metadata), ensuring that the TDK fields only contain text information, which facilitates internal system processing and external interface calls.

Although the template engine provides|safefilters (such as{{your_variable|safe}}）can force HTML content not to be escaped, butit is strongly recommended not to use it for TDK tags.Using this filter for TDK tags not only goes against SEO**best practices, but may also lead to unexpected display issues.The purpose of TDK is to provide a concise and accurate page summary, rather than display rich text.

Special character support: flexible application in practice

Relative to HTML code, the TDK tags of Anqi CMS are more specific.The support for special characters is more extensive and friendly.You can certainly use various special characters in the TDK content to enhance the expressiveness of information or meet specific SEO requirements.

Common special characters, such as hyphens-and underscore_and comma,and colon:and semicolon;|, a vertical line.|and as well as common question marks?and exclamation mark!Parentheses()And, they can all naturally be included in the TDK content without causing parsing issues.These characters are commonly used as separators in SEO to help users and search engines better understand the structure and key points of the content.

It should be noted that,&Such characters as 'and sign' have special meanings in HTML standards (used to represent HTML entities), and they are usually automatically converted to HTML entities when output by the template engine of a CMS.&amp;.For example, if you enter 'Company & Brand', the page source may display as 'Company & Brand'.This conversion is normal and fully conforms to the HTML specification, which will not affect the correct understanding of search engines and can help avoid potential HTML parsing errors.

Similarly, some special characters that may conflict with template syntax or HTML tags (such as unescaped<or>The content will also be properly handled by the system's default escaping mechanism to ensure the stability and security of page output.This means you don't have to worry too much about technical issues caused by special characters; the system will take care of these details for you.

[en] Practical Tips

To maximize the SEO effect of the TDK tag while ensuring the stable operation of the website and the user experience, I suggest you always adhere to the following principles:

  1. Text-only content is preferredTitle, Keywords, and Description should be presented in a concise, accurate plain text format and should not contain any HTML tags.Focus on extracting the core information of the page and writing in natural language.
  2. Reasonable use of special characters: Use hyphens reasonably according to actual needs-|, a vertical line.|and comma,Use special characters to separate keywords or phrases, enhancing the readability of TDK content. For example: 'Product Name - Brand Official Website | Category Type'.
  3. Pay attention to word count limitsEven if special characters are supported, pay attention to the character length limit of TDK (for example, Title is usually 50-60 characters, and Description is about 120-150 characters), to avoid truncation of overly long content.
  4. Preview and TestAfter setting the TDK, it is recommended to preview the display effect of the TDK in search results through search engine simulation tools or actual search, ensuring its beauty and attractiveness.
  5. Distinguish treatment of URL fieldThe [en]also provides such functional fields as规范链接（Canonical URL）、自定义URL, which are specifically designed to handle information such as URLs that contain complex special characters, and are distinct from the TDK text content. They will be processed according to the URL specifications, so there is no need for additional concern.

In summary, the Anqi CMS adheres to security and SEO**best practices in the handling of TDK tag content.It encourages TDK content to be primarily in plain text format, while providing good compatibility with commonly used special characters, and is supplemented by an automatic escaping mechanism to ensure the correctness of the output.This allows website operators to focus on content optimization without getting bogged down by technical details.

Common Questions (FAQ)

  1. Q: What will happen if I insist on using HTML code in TDK?A: If you input HTML code in the TDK field (for example<b>重要标题</b>），Security CMS template engine in