I used Calibre Ebook management for many years. Just noticed that it has a big version upgrade. It is v5 now.
There is something new in Calibre 5.0.
- Highlighting Supporting in the calibre e-book viewer
- Python 3
The installation package is about 125MB. I prefer to 64bit software.
![](https://www.yinfor.com/wp-content/uploads/2020/09/calibre4-500x270.jpg)
![](https://www.yinfor.com/wp-content/uploads/2020/09/calibre5-500x271.jpg)