# GitHub Rulers

> Displays a 0, 80 and 120 character stop in the GitHub web editor

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

## Overview

- **ID:** `github-rulers`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Tomas Hubelbauer
- **Category:** web-development,appearance
- **Version:** 1.3
- **Last updated:** 2023-04-12
- **First published:** 2021-03-15
- **Size:** 12 KB
- **Data as of:** 2026-09-21
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/github-rulers/)
- **Website:** [https://hubelbauer.net](https://hubelbauer.net/)

## Description

GitHub Rulers is a Firefox add-on that adds vertical lines (rulers) in the GitHub web code editor, highlighting the 0, 80, and 120 character marks. Improve your coding workflow and easily maintain consistent code formatting with GitHub Rulers.

## Rankings

- #133,106 — Overall

## Permissions and access

### Permissions

- `*://*.github.com/*`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Request access to the following domains: github.com
- 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/github-rulers)