Hello Codeforces community,
Many of us spend hours here: solving problems, reading editorials, and participating in contests. While Codeforces is already amazing, there is one feature that would make it more comfortable and modern: a dark/light mode toggle.
Why Dark Mode?
- Reduces eye strain during long practice sessions, especially at night.
- Matches modern web standards since most competitive programming and developer platforms already have it.
- Makes the site more accessible and user-friendly.
Suggested Feature
- A simple toggle button in the header or settings.
- Persistent choice: the site remembers the last mode you used.
- Covers all main areas:
Problem statements
- Editorials
- Submissions and contest standings
- Code editor and tables
- Blogs and comments
Why Official Dark Mode is Better than Extensions
Some people might say: "Just use Stylus, Tampermonkey, or a browser extension." But an official dark mode would be much better for several reasons:
- Seamless experience: no need to install or configure anything. It works for everyone by default.
- Consistency and reliability: extensions often break when Codeforces updates its HTML or CSS. An official mode would always be maintained.
- Full integration: extensions usually only restyle backgrounds and text. An official mode could properly theme everything including the editor, tables, and rating graphs.
- Accessibility: official mode can support system preferences (
prefers-color-scheme), so it can switch automatically with the operating system. - Performance and security: extensions inject extra scripts which can slow down the site or pose risks. A native feature is faster and safer.
- Community adoption: if Codeforces itself provides it, far more people will use it.
Closing Thoughts
Dark mode is not only a visual change but also about comfort and usability for the community.
I hope that MikeMirzayanov and the Codeforces team will consider this feature in the future.
What do you think? Would you like to see a dark/light mode toggle added to Codeforces? If enough people support this, perhaps the Codeforces team could bring it in a future update.
