Some people don't know how appropriate the font size of A4 paper is. Here we tell you that different uses determine the font size of A4 paper. For example, for official documents submitted to the government, the font should be No.3 (required by the state), and the font No.3 on A4 paper looks beautiful and neat. Generally, the font size of magazines and newspapers is No.5, because it wastes too much resources and affects the printing quality and readers' eyesight. The font size of No.5 on A4 paper is just right.

If you only use it yourself, design it according to your own mind and use as much as you want. However, it is still recommended not to use too small fonts, which will have a great impact on readers' eyesight.