LibrusPro Firefox

LibrusPro

Browser extension for the Polish Librus e-diary, introducing a dark theme, displaying grade point averages despite being disabled by the School Administrator, allowing to add custom events in the schedule and some minor improvements to its features.

Features & Capabilities

LibrusPro is a feature-rich browser extension designed to improve the Polish Librus e-diary experience. It introduces a sleek dark theme for comfortable viewing, enables adding custom events to your schedule, and calculates your grade point average even when disabled by your school administrator. The extension also offers visual enhancements such as hiding subjects without grades, displaying behavior notes directly in tables, and adding a lesson plan button that opens in a new tab. Additionally, LibrusPro includes a "Depression Mode" that applies subdued colors to grades and schedule events to support user wellbeing. With streamlined navigation and insightful information like your "Lucky Number," LibrusPro provides a customized and user-friendly interface for students using Librus.

User Growth & Download Statistics

Manifest V2 Add-on Education
By:
Maks Kowalski
Daily users:
1,526 34
Rating:
5.00
(16)
Version:
3.4.0 Last updated: 2023-09-07
Version code:
5620049
Creation date:
2021-01-30
Risk:
Low risk impact Low risk likelihood
Permissions:
  • storage
  • https://synergia.librus.pl/*
  • https://portal.librus.pl/*
Content scripts matches:
  • synergia.librus.pl
  • portal.librus.pl
Size:
346.42KB
Email:
ka*****@gmail.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-15
Compare stats and ranking:

Other platforms

Chrome
LibrusPro - rozszerzenie do Librusa (v4.0.2)
30,000 4.94 (634)
Edge
LibrusPro - rozszerzenie do Librusa (v3.4.0)
2,605 4.80 (8)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Maks Kowalski
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/libruspro/
Email:
ka*****@gmail.com
Website:
https://discord.gg/e9EkVEvsDr

User Reviews

Users generally rate LibrusPro as a highly useful and reliable Firefox add-on. Repeated praise includes strong recommendations and the sense that it makes Librus access easier and more practical. Reviewers note that it works well over long-term use (over a year) and adds value to daily Librus workflows. One user reported a permission-related issue that prevents functionality for their setup, but this seems isolated. A minor nod to a fun easter egg (login history) and, in at least one review, the addition of a dark mode feature. Overall, the add-on is well-regarded and favored by users.
Pros
  • Highly recommended and consistently praised by users
  • Very useful plugin that users find practical
  • Reliable and effective, with reports of long-term use (over a year)
Cons
Recent reviews
Najepsze rozszerzenie polecam
by Ju*****, 2026-03-25

by Fi*****, 2026-02-03

Dowalone ulepszenie librusa
by Fi*****, 2026-01-05
View all user reviews ›

Is LibrusPro Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

LibrusPro requires very minimum permissions.

Risk impact analysis details
  • High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
  • Low ******* ****** ** *** ********* ******** *********
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

LibrusPro has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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