COS uses the
imageMogr2 API of Cloud Infinite (CI) to perform Image Advanced Compression, which allows you to easily convert images into formats that provide a high compression ratio, such as TPG and HEIF. This effectively reduces the transmission time, loading time, and the use of bandwidth and traffic.
|TPG compression||TPG is a Tencent-designed image format. Converting JPG, PNG, GIF, WebP images into TPG can greatly reduce the image sizes.|
|HEIF compression||If your images are used in iOS environments, you can convert them from JPG, PNG, GIF, WebP, or other formats into HEIF, which offers an ultra-high compression ratio.|
- To use the TPG format, ensure that the environment where images are loaded supports TPG decoding. CI provides TPG decoder−integrated SDKs for iOS, Android, and Windows clients to facilitate quick integration with TPG.
- Currently, iOS 11 or later and Android P have native support for the HEIF format.
- Image Advanced Compression is charged by CI. For detailed pricing, please see Billing and Pricing.
|download_url||URL of the image, formatted as
||Target compression format, which can be TPG or HEIF|
Assume that the input image is a 1,335.2 KB image in PNG format, as shown below:
You can convert the image into TPG format using the following URL:
Alternatively, you can convert the image into HEIF format using the following URL:
Compression ratio comparison
|PNG (input image)||1,335.2 KB|
|TPG||36.67 KB (compression ratio: 97.3%)|
|HEIF||52.87 KB (compression ratio: 96.0%)|