Features of IDM:

Pause and resume feature is really useful for existing downloads.
Schedule feature helps you download the files on your preferred time.
Download accelerator feature can speed up your downloads up to 5 times.
Supports batch downloads and multi-part downloads to accelerate the downloading process.
All the tools and extra features are updatable from IDM itself from time to time.
Supports various languages.
Compatible with all the versions of Windows including Windows 10.
Drag and Drop option is really useful and time-saving.
Supports full website download in HTML format for future offline use.
Compatible with more than 150 Internet browsers.
IDM supports integration with almost every browser. (ReadHow to Add IDM Extension in Chrome)
Able to download multiple files at the same time.
Videos from the online streaming websites can easily be downloaded directly from IDM.
All kinds of formats can be downloaded like pdf, mp4, avi, mp3, gif, etc. and many more