When importing photoshop, press ctrl+alt+s to adjust the quality of the exported photos. Even the capacity of 100 mass will be much smaller and still clear.

Format is to highlight the content, make it easier for people to understand the main points of the content, and even read the content. The format is beneficial. Format is the first impression a paper gives readers. Many experienced teachers can judge whether the paper is serious, how the students' professional training is and whether there are important omissions according to the format.