The browser that
belongs to you.
Lumen is a Chromium-based browser engineered for speed, privacy, and total control. With built-in CPU & RAM limiters, mod support, and a extension system.
Lumen is a Chromium-based browser engineered for speed, privacy, and total control. With built-in CPU & RAM limiters, mod support, and a extension system.
Set hard caps on how much system memory and processor time Lumen is allowed to use — globally or per-tab. Stop your browser from killing your workflow.
Blocks trackers, fingerprinting scripts, and invasive third-party cookies at the engine level.
Compatible with Manifest V3 and our extended Lumen API - run all your Chrome extensions plus Lumen-exclusive ones.
Install community-made mods that alter the UI, add shortcuts, restyle the browser, or inject new capabilities entirely. Share and publish your own.
Auto-suspend idle tabs after a configurable timeout. Each sleeping tab drops to near-zero RAM impact.
Fully isolated browser profiles with separate cookies, storage, and extensions. Perfect for work vs personal vs incognito contexts.
RAM data: SuperchargeBrowser benchmark (Chrome 147, Firefox 149, Brave 1.90) — extensions disabled, clean profiles, measured via OS task manager.
Lumen strips out all Google telemetry from the Chromium base and replaces it with nothing.
Optional crash reports and anonymous heartbeat signals may be sent to help improve stability and estimate overall usage. Both can be disabled in settings.