AnQiCMS provides a very practical feature that allows you to batch regenerate thumbnails of all images on your website, ensuring they comply with your latest image processing settings.This feature is crucial for maintaining website visual consistency, optimizing loading speed, and adapting to different terminal displays.

Understand the image processing mechanism of AnQiCMS

In AnQiCMS, image management and optimization are the core components of content settings.Before you consider bulk re-generating thumbnails, you first need to understand how the system handles and generates these thumbnails.All related configurations are concentrated in the "Content Settings" area in the background.

The system provides detailed control over the thumbnail generation method. You can choose different "thumbnail processing methods" to determine how the image is cropped or scaled:

  • Scale proportionally to the longest side:This method maintains the original aspect ratio of the image and scales it based on the longest side (width or height) to make the image fit the target size completely, adjusting the other side proportionally.This method ensures that the image content is displayed completely, but may leave blank space on the other side of the thumbnail size.
  • Pad to the longest edge:After the image is scaled proportionally, if it does not completely fill the target thumbnail size, the system will automatically fill the insufficient part with pure white (or a specified color) to ensure that the image completely covers the specified size without being cropped.This is applicable to the scenario where a fixed size background is required.
  • Trim to the shortest edge:This method will prioritize cropping the longer edge of the image to match the shorter edge, and then display it centered.This may result in the loss of content at the edges of the image, but it ensures that the thumbnail is completely filled to the specified size, which is very suitable for layouts that require strict aspect ratios.

In addition to the processing method, you can also set specific "thumbnail size". This size directly determines the width and height of the generated thumbnail, for example, set to200x150pixels. After modifying these settings, new uploaded images will be generated according to the new rules. However, for images that have already been uploaded, they will still retain the old thumbnail version.

Moreover, the setting of 'whether to automatically compress large images' will also affect the original size of the image, thereby indirectly affecting the source file for thumbnail generation.If this feature is enabled, the image will be automatically compressed to the specified width upon upload, which helps save storage space and speed up page loading.

steps to batch regenerate thumbnails

When you modify the above image processing method or thumbnail size settings, and wish to apply these new rules to all uploaded images, AnQiCMS provides a convenient 'batch regenerate thumbnails' feature.

Please log in to your AnQiCMS backend, navigate to the 'Content Settings' menu under the 'Backend Settings' menu.On this page, scroll down until you find the configuration area related to image processing.You will see a feature description that the system provides a batch regeneration of thumbnail feature, you may have changed the size of the image thumbnail, if you need to regenerate all thumbnails to a new size, you can use this feature to regenerate all thumbnails to the new size.The text below has a corresponding 'Batch regenerate thumbnails' button.

Click this feature button after, the system will traverse all the images on your website and regenerate thumbnails based on the thumbnail processing method and thumbnail size you have configured in the "Content Settings".This process will replace the new thumbnail with the old one, ensuring that your entire website image library is in line with the latest settings.

After completing the operation, it is recommended that you immediately click on the "Update Cache" feature on the left side of the background navigation bar, clear the system cache, to ensure that the front-end page can load and display the new thumbnail immediately.

**Practice and Precautions

When performing the batch thumbnail regeneration operation, as a website operator, we should follow some practices and pay attention to potential problems to ensure the process goes smoothly and achieves the expected effect.

First, make sure to carefully check the modifications you have made to the 'thumbnail processing method' and 'thumbnail size' in the 'Content Settings' before clicking the 'Regenerate' button.Make sure these settings completely meet your current website design and optimization requirements.Once the batch operation starts, changes will be applied to all images, and if the settings are incorrect, the operation may need to be performed again.

Secondly, considering that batch processing may consume server resources, it is recommended to perform this operation during periods of low website traffic, such as late at night or early in the morning.This helps to avoid affecting user experience due to high server load.

Finally, after the operation is completed, be sure to randomly check several pages and articles to verify that the image thumbnails are displayed correctly according to the new settings.Sometimes, browser cache may cause old images to temporarily display, at this time, clearing the browser cache or refreshing the page can solve the problem.If any anomalies are found, they should be traced back and the configuration checked promptly.

Through this feature of Anqi CMS, you can easily standardize and optimize the thumbnails of images across the entire site, providing users with a better browsing experience and laying a solid foundation for the SEO performance of the website.

Frequently Asked Questions (FAQ)

Q1: Will batch regenerate thumbnails affect the original images? A1:Will not.The AnQiCMS batch thumbnail regeneration feature will only generate new thumbnail versions based on the original image, and the original image file itself will not be modified or deleted.You can rest assured that the original image is always safe and secure.

Q2: How long does it take to regenerate thumbnails? A2:The time to regenerate thumbnails depends on the number of images on your website and the performance of the server.The more images there are, the lower the server performance, and the longer the time required.For websites with a large number of images, this process may take several minutes or even longer, please be patient.

Q3: How to update the front-end image after bulk thumbnail regeneration? A3:After batch generation is complete, please be sure to click the "Update Cache" button in the background to clear the system cache.In addition, your browser may cache old images.Try clearing the browser cache or accessing the website in incognito mode, this usually solves the problem and allows new thumbnails to be displayed in time.