Lumina works silently in the background. You see the results; you never feel the overhead.
Lumina hooks into the Navigation Timing API and Resource Timing API to capture precise DNS, TCP, TTFB, and render metrics for every page load — automatically.
Using the WebRequest API and a curated blocklist, Lumina silently intercepts and drops tracker calls, third-party analytics, and heavyweight ad scripts before they load.
Everything is surfaced in a clean side-panel with a colour-coded performance score, a live sparkline of load times over the session, and per-tab memory usage.
Lumina is architected to be invisible — fast to load, lean in memory, and zero-footprint on the network.
Most "privacy-friendly" tools make a promise on a website and quietly break it with an analytics SDK. Lumina can't collect your data — because it has nowhere to send it.
There are no servers. No accounts. No unique identifiers. The extension only writes to chrome.storage.local, which is isolated to your device and browser profile.
The source code is open for review. If you're a developer, pull it apart — that's the only audit that matters.
No outbound network requests
Lumina never makes an HTTP request from its own code. Zero analytics, zero update pings, zero beacons.
Isolated local storage only
All session data is written to chrome.storage.local. It never leaves your machine.
Minimum required permissions
Lumina only requests webRequest, tabs, and storage. Nothing else.
Fully auditable source code
The entire extension is open source on GitHub. You don't need to trust us — verify it yourself.