# SigTools

> Sigarra Tools | An extension that makes the information system of the University of Porto slightly better.

Canonical page: [https://chrome-stats.com/d/sigtools](https://chrome-stats.com/d/sigtools)

## Overview

- **ID:** `sigtools`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** msramalho
- **Category:** other
- **Daily users:** 1
- **Weekly downloads:** 1
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 4.2.0
- **Last updated:** 2022-04-26
- **First published:** 2018-02-02
- **Size:** 978 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/sigtools/)
- **Website:** [https://github.com/msramalho/SigTools/issues](https://github.com/msramalho/SigTools/issues)

## Description

SigTools is a Firefox add-on called Sigarra Tools that improves the University of Porto's information system. It allows for exporting calendar events, statistical analysis on grades, library book renewal, and more.

## Rankings

- #72,936 — Overall

## Permissions and access

### Permissions

- `https://*.up.pt/*`
- `storage`

### Content script matches

- `*.up.pt`
- `sigarra.up.pt`
- `moodle.up.pt`
- `catalogo.up.pt`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/sigtools)