Unnecessarily including all the third-party plugins and styles are not a good practice. At the same time, it is wise to remove unnecessary and unused code from your files.
With Raileo page size analysis you can understand how much of your webpage size is occupied by JS scripts, CSS and images.
Every scan report is comprehensive and helps you to understand how much it changed from the previous scan. Also, chart representation of the scores for a period up to a year gives you a clear insight into your webpage size changes over the period.