tumbler

nine

agree with

Read the software example:

PDF edited by text cannot be reduced. Only the scanned image file can be reduced by the optimizer in the advanced tool, generally by reducing the resolution of the image, but it will cause the image of the file to be unclear and the resolution will be reduced, especially when printing the file, which has great influence and is not recommended.

Nowadays, computer hard disks are generally large, so don't make this space inconvenient to use.