Edge Security Acceleration (ESA) provides protocol optimization and image transformations, Gzip compression, Brotli compression, and other features to enhances your website performance and user experience.
Feature introduction
Feature | Item | Dscription |
You can convert image formats based on your business requirements. For example, you can convert the format of an image if the image size is excessively large due to its format. You can also convert the format of an image if the platform on which you want to use the image has specific requirements on image formats. This topic describes how to convert an image to a specified format. | ||
Image quality adjustment refers to the process of compressing images while maintaining their formats. Images have two types of qualities: absolute quality and relative quality. You can use the image quality adjustment feature to reduce image sizes and optimize traffic utilization. | ||
The cropping feature lets you remove unnecessary elements from your images and keep only the highlights. You can also use this feature to adjust image aspect ratios. You can specify cropping-related parameters in request URLs to change the base images on ESA points of presence (POPs) to the specified size. | ||
Image resizing includes resizing by percentage, conditional resizing, adaptive resizing, and resizing to a specific size. If a platform or an application has specific requirements for the size of images, such as a profile picture or thumbnail, you can resize images by dimension or percentage to meet different display requirements. | ||
You can rotate an image clockwise by a specified angel. The specified angel can be 90°, 180°, or 270°. | ||
If chromatic aberration or image blur caused by improper camera settings or device incompatibility occurs, you can adjust the brightness, contrast, or sharpness of base images on ESA POPs to improve image resolution and visual effects. | ||
You can add watermarks to your images for brand promotion and publicity. This helps protect the copyrights of images and prevent unauthorized use of images. ESA allows you to add text watermarks or image watermarks to specified parts of images and adjust the transparency of the watermarks to ensure that both the watermarks and image content are clearly displayed. | ||
This topic describes how to query information about an image and provides examples. | ||
N/A | If you enable the Gzip compression feature, ESA POPs return Gzip-compressed files to clients. This reduces the file size, speeds up file transmission, and improves bandwidth utilization. | |
N/A | Brotli is a new open source compression algorithm, which has better performance than Gzip. After you enable the Brotli compression, POPs compress resources before the resources are returned to clients. This reduces file sizes, accelerates file distribution, and reduces bandwidth consumption. | |
N/A | If you enable the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) feature and correctly configure the required certificate for your website, ESA automatically turns on the HTTP/2 and HTTP/3 (QUIC) switches to allow you to use the HTTP/2 and HTTP/3 protocols. |