As far as I know, Word is saved incrementally when editing, that is, only new changes are saved, which can ensure the storage speed when editing, and saving Word as a copy will also become smaller. This is one of the reasons.

Aside from this factor, compared with WPS, the storage parameters of the documents of the two companies are different (mostly referring to bitmap images).

Compression ratio), which may be the compression ratio of WPS.

Higher, so WPS is smaller (guess), but at the same time, one problem that needs attention is that the quality between them may also have changed.

The above is my humble opinion. I hope to adopt. If you like learning computers, playing with numbers and engaging in software, you can pay attention to the official account of WeChat [Feng Bing Computer World] and read more related articles. I learned a lot here ~