WPS Presentation includes advanced animation, slide transitions, and support for video, images, audio, and even Flash. A presentation burdened with too many pictures will have a file size that will be too large. 

With the help of the File Compressor function in WPS, improving transmission speed and saving phone memory will be quite easy.

Before compressing the file, we can check the Size value of the File Info.

Click Tools and select File Compressor in the Files tab.

If you don't want to compress the source file directly, you can check Back up the original document then generate another compressed file.

Click Start Compression to complete the process.

Check the File Info again and compare the file size before and after compression. Now obviously, the file is reduced in size, while the content remains unchanged.

You are welcome to compress files on WPS PC to enjoy more functions.