Is LibrusPro safe?

Clean risk

Adds dark theme, schedule events, grade averages, and visual tweaks to Librus pages.

This extension changes the Librus interface with options such as a dark theme, custom schedule events, grade point average calculation, hidden subjects without grades, and subdued colors for grades and schedule events. It also modifies parts of the navigation and schedule display, including showing event descriptions, proposed behavior, and journal number information. It can store extension settings and runs on synergia.librus.pl and portal.librus.pl pages.

Maks KowalskiFirefox Add-ons
0Risk
Who publishes it

Maks Kowalski - no other listings under this identity, 2 shared hostnames

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Maks Kowalski

Shared hosts - 2 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

liblink.pl
Also called by 4 other listings, including LibrusPro
portal.librus.pl
Also called by 5 other listings, including LibrusPro

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Where it sends data

Destinations our analysis observed LibrusPro contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • synergia.librus.pl

    LibrusPro sends data to synergia.librus.pl. One other extension we have analysed sends data here.

  • portal.librus.pl

    LibrusPro sends data to portal.librus.pl. No other extension we have analysed sends data here.

Updated 15 October 2026amo-2684636