Practice comfortably, your way.
The Kalvium DOJO Enhancer is a lightweight browser extension that gives you dark mode, custom themes, backgrounds, editor colors, and a live leaderboard with streaks & daily goals — so you can code for hours without eye strain.
Why use this extension?
Dark mode for long sessions
Students found it difficult to stay and practice on the platform for long hours because of the bright white screen causing eye strain and fatigue. The default light theme made extended coding sessions uncomfortable, and there was no built-in way to customize the experience.
Make it yours
This extension lets you customize your DOJO environment freely — dark mode, themes, backgrounds, editor colors — so you can practice comfortably for as long as you want, without getting bored or strained. Full control over your learning environment.
Features
One-click dark mode
Simple CSS-filter dark mode (invert + hue-rotate) that works instantly on every Kalvium page. Toggle from the popup or the floating button — no reload needed.
Custom themes & backgrounds
8 built-in themes (Default, Midnight, Aurora, Sunset, Ocean, Matrix, Neon, Forest) with animated gradient washes. Upload your own images, GIFs, videos, or YouTube links as backgrounds.
Editor customization
VS Code-style blue text in dark mode, custom font sizes, text glow, forced text colors. Works inside Monaco editor on DOJO workouts.
Live leaderboard & streaks
Real-time class leaderboard with daily/weekly/all-time ranks, heatmap activity calendar, and automatic streak tracking. Syncs to Supabase cloud.
Daily goals & celebrations
Set a target for problems solved today. Hit it and get a fun GIF celebration. Goals persist across sessions and show on the leaderboard.
RUN / RUN TEST / HINT / COPY buttons
One-click action buttons on workout pages, styled like the site's own UI. Shortcuts: Ctrl+Enter = run tests, Ctrl+Shift+Enter = run.
Fun GIF companion
Animated coding/idle/error/copy/paste GIFs in the corner. Sticker system lets you pin custom GIFs anywhere on the page.
Practice time tracking
Total DOJO time, daily breakdown, and time-per-problem stats — all synced to the cloud so you never lose progress.
How it works
Install the extension
Download from the GitHub releases, load it into Edge/Brave/Opera (Developer mode → Load unpacked), open your Kalvium DOJO page.
Customize your experience
Click the extension icon for dark mode toggle. On DOJO pages, open the settings panel (☰) for themes, backgrounds, editor colors, fun GIFs, and more.
Code comfortably for hours
Dark mode reduces eye strain. Your solves, skips, streaks, and time sync automatically to the cloud leaderboard. Practice longer, rank higher.
Open source, made by students
Free. Open. Yours.
The whole project — extension, cloud functions, and this site — lives on GitHub. Fork it, tweak it, or just star it.
Our Contributors
Built with love by students, for students — a special thanks to everyone who made this possible.
Answer a quick survey — we will compose the email for you.