As a website content expert deeply familiar with the operation of security CMS, I fully understand the importance of TDK (Title, Description, Keywords) for a website's performance in search engines and its ability to attract user clicks.Description tag, serving as a summary below the title in the search engine results page (SERP), the length control directly affects the initial impression of the content and the willingness to click.Too long will be truncated and cannot convey the information completely; too short may be superficial and lack吸引力.AnQi CMS provides powerful template tags and filters, allowing us to flexibly and accurately control the display length of Description.

Precise control of Description length: The TDK filter application of Anqi CMS

In AnQi CMS, the TDK information of a website can be set in various ways, whether it's the global homepage TDK or the dynamic TDK for articles, categories, single pages, and other content. This content will ultimately be output to the web page through template tags.<head>Area, for search engine reading.However, the Description content entered in the background may be longer than the actual length displayed by the search engine. In order to optimize the display effect of the SERP, we need to use the length filter provided by the Anqi CMS.

The template engine of AnQi CMS supports filters similar to Django template syntax, which provides great convenience for refined content output. Among them,truncatecharsThe filter is a powerful tool used for precise control over the number of characters in a string.

truncatecharsThe mechanism of action of the filter

truncatecharsThe filter is designed to truncate a string to not exceed a specified number of characters. When the number of characters in the original string exceeds our set limit, truncatecharsThe extra part will be automatically truncated and an ellipsis will be added at the end of the string....), indicating that the content has been truncated.This processing method ensures the conciseness of the Description while implying that there is more content for the user to click and view, which conforms to the search engine's recommendations for Description length.

For example, if we want to limit the Description to 150 characters, truncatechars:150It can achieve this purpose. It calculates all characters in the string (including spaces and punctuation) and truncates when it reaches 150 characters.

How to applytruncatecharsApplied to Description length control

In the AnQi CMS template, Description is usually throughtdktags to call.tdkTags are a universal TDK tag that can intelligently output the corresponding Title, Keywords, and Description based on the type of the current page (home page, article detail page, category list page, etc.).

To apply to Descriptiontruncatecharsfilter, we can calltdkApply the filter directly when the tag output Description. The specific application method is as follows:

First, in your template file (for example,base.htmlor a specific article/categorization template）'s<head>area to find the output location of Description. It will usually be like this:

<meta name="description" content="{% tdk with name="Description" %}">

To control its length, we cantdkThe output result of the tag is applied directlytruncatecharsFilter. If we want the length of Description not to exceed 150 characters, we can modify it like this:

<meta name="description" content="{% tdk with name="Description" %}|truncatechars:150">

Or, for better readability, you can also assigntdkthe output content of the label to a variable and then apply a filter to the variable:

{% tdk seoDescription with name="Description" %}
<meta name="description" content="{{ seoDescription|truncatechars:150 }}">

In both of these methods,truncatechars:150Ensure that the Description content rendered in the HTML is truncated when it exceeds 150 characters, and an ellipsis is appended. For example, if the original Description is 'This is a very long description text, which contains many details intended to attract users to click and learn more content, but may be too long for search engines', it will betruncatechars:150After processing, it may be displayed as “This is a very very long description text, which contains many details intended to attract users to click and learn more, but it may be too long for search engines…”

**Practical Tips and Considerations

When usingtruncatecharsPerform Description length control by following these practices:**

  1. Refer to SEO length.: The display length of Description by search engines varies, but it is generally recommended to control it between 120-160 characters. You can adjust it based on the target search engine and actual test results.truncatecharsThe parameter.
  2. The core content is in front.: Make sure the most important information and keywords of Description appear within the first 120 characters, even if truncated, the core selling points can still be seen by users.
  3. Maintain semantic integrityAvoid breaking important information, and when editing the Description on the backend, it's best to estimate the display length so that truncation occurs at a place where the semantics are relatively complete. AlthoughtruncatecharsIt is truncated by characters, but good original copy can reduce the abruptness after truncation.
  4. Uniform application across the entire siteTo maintain the professionalism and consistency of the website, it is recommended to apply the same length control strategy to all dynamically generated Descriptions.
  5. Browser and device testingAfter application, it is essential to test the page display effect on different browsers and mobile devices, and check whether the Description in the simulated SERP of search engines meets the expectations.

Through the CMS provided by AnQitruncatecharsFilter, we can effectively optimize the display of Description, ensuring it is concise and attractive in search engine results, thereby enhancing the website's SEO performance and click-through rate.

Common Questions and Answers (FAQ)

Q1: UsetruncatecharsDescription truncation filter, will it affect the original Description content stored in the background?A1: No.truncatecharsThe filter only processes the output string during template rendering, it does not modify the original Description content stored in the database.The Description is still complete and uncut text when editing and viewing on the back end.

Q2: BesidestruncatecharsAre there any other filters in Anqi CMS that can control the length of the Description?【en】A2: Yes. If you want to truncate Description by word instead of character, you can usetruncatewordsa filter. For example,{{ seoDescription|truncatewords:20 }}The text will be truncated to 20 words. Additionally, if the Description content contains HTML tags and you wish to retain the HTML structure during truncation, you can usetruncatechars_htmlortruncatewords_htmlThey will intelligently handle HTML tags to prevent truncation and damage to the page structure. But usually, the Description content should be plain text.truncatecharsis more commonly used.

Q3: How to know the **length** of Description, so as to settruncatecharsthe parameter?A3: The **length of Description is not fixed, it is affected by search engine algorithms and the size of device screens. Generally speaking, it is recommended totruncatecharsThe parameter setting is between 120 and 160.You can view the display status of your competitors' Description by searching for keywords, or use tools such as Google Search Console to view the actual display effect.On mobile devices, the number of characters displayed is usually less, so a conservative setting of 120-130 characters is a safe starting point.Regular checks and adjustments based on data feedback are**practical.