Hello everyone!

I built a Chrome extension that helps you filter your problems on Codeforces by tags, verdict, date and rating range.

Problem

While practicing on Codeforces, I felt that there is no direct way to:

• View problems by specific tags
• Filter problems based on when they were solved
• Analyze submissions based on verdict (AC, WA, etc.)
• Explore problem-solving patterns of top competitive programmers

This makes revision, topic-wise practice, and analysis a bit inconvenient.

Solution

So I built a Chrome extension that adds these features directly to the submissions page.

It integrates seamlessly with the existing Codeforces UI and allows you to filter and analyze problems efficiently.

Features

• Filter problems by tags
• Filter by verdict (AC, WA, TLE, etc.)
• Date range filtering
• Rating range filtering (min–max)
• Shows number of problems
• Displays problem ratings
• Sort problems by rating (ascending / descending toggle)
• Clean UI integrated with Codeforces
• Works on both light & dark mode (including Dark Reader)

Where it works

• Codeforces Submissions Page

Screenshots

How to Use

1. Install the extension from Chrome Web Store
2. Open your submissions page: https://mirror.codeforces.com/submissions/your_handle
3. Select tags, verdict, rating, date, etc.
4. Click Apply
5. View filtered problems instantly

Download

You can download the extension here:

https://chromewebstore.google.com/detail/cf-tag-filter/ehnihgbkpckfocoocnoghemdonahhnib

Use Case

• Revise problems topic-wise
• Track weak areas
• Analyze your own practice
• Explore how top competitive programmers solve problems

Links

Codeforces Profile: https://mirror.codeforces.com/profile/adarsh7203

LinkedIn Post: https://www.linkedin.com/posts/adarsh7203_codeforces-chromeextension-webdevelopment-activity-7448390181361033216-8R7g

Feedback

I would really appreciate your feedback and suggestions!

If you find this useful, please consider upvoting.

Thank you!