Hello cool coders! This is my first post on CF. This is to share a small tool I built using the codeforces api. Give it a try here: http://cfviz.netlify.com. The source is available here. Please let me know if you found any bug or issue.

Current features are:

Single User Analytics

• Verdicts chart
• Languages chart
• Tags chart
• Levels chart
• Total tried problems count
• Total solved problems count
• Average and max attempts
• Count of problems solved with one submission
• Max AC for a single problem (It indicates in how many ways someone solved a problem)
• List of unsolved problems

Comparison between two users

• Current, max and min rating
• Number of contests
• Best and worst position in contest
• Max positive and negative rating change
• Compared rating time-line
• Total tried problem count compared
• Total solved problem count compared
• Average and max attempts compared
• Count of problems solved with one submission compared
• Max AC for a single problem compared
• Tags compared
• Levels compared

Update: Two new features added

Two new features was added since this post was published. 1. Submissions heatmap in single user analytics 2. Common contest rank in comparison