CF Performance Mirror version history - 18 versions
CF Performance Mirror by Pritam Mohanta
Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 1.0.24
Released Feb 23, 2026 - 31.41 KBWorks with firefox 109.0 and laterSource code released under MIT License
Older versions
Version 1.0.23
Released Feb 21, 2026 - 32.01 KBWorks with firefox 109.0 and laterWhat's New
Three friction views — Topics, Ratings, and Problems with per-problem error breakdown (WA / TLE / RTE / MLE / ERR).
Division-aware stats — Div1 through Div4 split with smart Div1+Div2 round handling using your actual rating at contest time.
Problems view — flat sortable list of every problem you've had errors on, with tags, difficulty, and direct links.
Custom date range — analyze any specific window of time, not just presets.
Persistent settings — your defaults are remembered across sessions.
Hide AC'd toggle + Min WA filter — cut the noise, focus on what needs work.
Improved dark/light theme detection — dynamically adapts to the page with no flicker.
Bug fixes — accurate Div1+Div2 classification, correct sort mode persistence, and better tag display in problem lists.Source code released under MIT License
Version 1.0.22
Released Feb 21, 2026 - 32.08 KBWorks with firefox 109.0 and laterWhat's New
Three friction views — Topics, Ratings, and Problems with per-problem error breakdown (WA / TLE / RTE / MLE / ERR).
Division-aware stats — Div1 through Div4 split with smart Div1+Div2 round handling using your actual rating at contest time.
Problems view — flat sortable list of every problem you've had errors on, with tags, difficulty, and direct links.
Custom date range — analyze any specific window of time, not just presets.
Persistent settings — your defaults are remembered across sessions.
Hide AC'd toggle + Min WA filter — cut the noise, focus on what needs work.
Improved dark/light theme detection — dynamically adapts to the page with no flicker.
Bug fixes — accurate Div1+Div2 classification, correct sort mode persistence, and better tag display in problem lists.Source code released under MIT License
Version 1.0.21
Released Feb 21, 2026 - 32.12 KBWorks with firefox 142.0 and laterWhat's New
Three friction views — Topics, Ratings, and Problems with per-problem error breakdown (WA / TLE / RTE / MLE / ERR).
Division-aware stats — Div1 through Div4 split with smart Div1+Div2 round handling using your actual rating at contest time.
Problems view — flat sortable list of every problem you've had errors on, with tags, difficulty, and direct links.
Custom date range — analyze any specific window of time, not just presets.
Persistent settings — your defaults are remembered across sessions.
Hide AC'd toggle + Min WA filter — cut the noise, focus on what needs work.
Improved dark/light theme detection — dynamically adapts to the page with no flicker.
Bug fixes — accurate Div1+Div2 classification, correct sort mode persistence, and better tag display in problem lists.Source code released under MIT License
Version 1.0.20
Released Feb 18, 2026 - 24.19 KBWorks with firefox 109.0 and laterNew Features- Custom date range to view performance for a specific period
- Additional performance and usability improvements
Source code released under MIT License
Version 1.0.19
Released Feb 18, 2026 - 24.19 KBWorks with firefox 109.0 and laterNew Features- Custom date range to view performance for a specific period
- Additional performance and usability improvements
Source code released under MIT License
Version 1.0.18
Released Feb 17, 2026 - 24.23 KBWorks with firefox 142.0 and later- Added custom date range filtering for detailed performance analysis.
- Minor improvements and fixes.
Source code released under MIT License
Version 1.0.17
Released Feb 17, 2026 - 24.22 KBWorks with firefox 142.0 and later- Added custom date range filtering for detailed performance analysis.
- Improved flexibility in contest-wise tracking.
- Minor refinements and performance optimizations.
Source code released under MIT License
Version 1.0.16
Released Feb 17, 2026 - 24.19 KBWorks with firefox 109.0 and laterSource code released under MIT License
Version 1.0.15
Released Feb 17, 2026 - 24.2 KBWorks with firefox 109.0 and laterNew Features:
Added Custom Time Range Filter — allows users to filter contest data by a specific date range
Select a Start Date and End Date using the interactive date picker calendar
Click Apply to filter results based on the selected date range
Click Cancel to discard and go backSource code released under MIT License
Version 1.0.14
Released Feb 17, 2026 - 4.43 MBWorks with firefox 109.0 and laterNew Features:
Added Custom Time Range Filter — allows users to filter contest data by a specific date range
Select a Start Date and End Date using the interactive date picker calendar
Click Apply to filter results based on the selected date range
Click Cancel to discard and go backSource code released under MIT License
Version 1.0.13
Released Feb 8, 2026 - 21.28 KBWorks with firefox 109.0 and laterv1.0.13 - Full functionality release:
- Contest-wise performance analytics with average & median solve times
- WA% friction analysis to identify weak topics
- Time range filters (1 month, 3 months, 6 months, 1 year, 2 years, all time)
- Division filters (Div1, Div2, Div3, Div4, Other)
- Contest mode filters (Total, Rated, Unrated)
- Adaptive dark/light theme support matching Codeforces themeSource code released under MIT License
Version 1.0.12
Released Feb 7, 2026 - 11.27 KBWorks with firefox 58.0 and laterFixed critical packaging issues:
- Properly structured XPI with manifest.json at root level
- Resolved "corrupt add-on" installation error
- All files now correctly packaged with proper compressionSource code released under MIT License
Version 1.0.11
Released Feb 7, 2026 - 22.87 KBWorks with firefox 109.0 and laterRe-release to fix CDN caching issue. Resolved packaging problem that caused "add-on appears to be corrupt" installation errors.Source code released under MIT License
Version 1.0.10
Released Feb 7, 2026 - 22.86 KBWorks with firefox 109.0 and laterFixed installation issue caused by improper packaging. No functional changes - all features remain the same.Source code released under MIT License
Version 1.0.9
Released Feb 7, 2026 - 22.87 KBWorks with firefox 140.0 and later- Added time-based filters to analyze performance over different periods.
- Improved UI with dynamic background.
- Minor fixes and improvements.
Source code released under MIT License
Version 1.0.8
Released Feb 6, 2026 - 5.42 MBWorks with firefox 140.0 and later- Added time-based filters to analyze performance over different periods.
- Improved UI with dynamic background.
- Minor fixes and improvements.
Source code released under MIT License
Version 1.0.4
Released Feb 6, 2026 - 413.72 KBWorks with firefox 140.0 and later, android 142.0 and laterSource code released under MIT License