Changing the background of the PDFs will comfort your eyes after long-time reading.
- 1. Tap Tools on the main menu -> Background -> Add Background;
- 2. Or tap Editor on the toolbar -> Background -> Add Background to the PDFs and set its capacity, ratio, rotation and position;
- 3. Tap Remove Background if you don’t need them.
- If you want to customize your toolbar to get more frequently-used tool items, go "How to customize toolbar?" to learn more.