Recently I have developed a chrome extension which analyses codeforces profiles and presents the chart/data on the profile webpage itself. Just open any profile on Codeforces after installing this extension.
Also, you can find the source code on Github.
The chart includes —
- Problem rating chart — Bar chart for the number of problems solved for each problem rating
- Tags chart — Doughnut chart for the number of problems solved for each tag across all problems
- Unsolved problems — Gives the count and also lists all unsolved problems.
Extension in action:
The UI blends easily with the original website.