# Improve 209

> Some changes to the csc209 (2023 winter) website coordinated by Professor Rosenbloom

Canonical page: [https://chrome-stats.com/d/improve-209](https://chrome-stats.com/d/improve-209)

## Overview

- **ID:** `improve-209`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** logonoff
- **Category:** web-development
- **Version:** 0.12.5
- **Last updated:** 2023-03-13
- **First published:** 2023-02-08
- **Size:** 45 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/improve-209/)
- **Website:** [https://github.com/utmgdsc/2023-csc209h5s-extension/issues](https://github.com/utmgdsc/2023-csc209h5s-extension/issues)

## Description

Improve 209 is a Firefox add-on that provides quality of life changes for the CSC209 Winter 2023 website. It features dark mode, C syntax highlighting, a popup for quick access to lecture slides, improved navigation with bolded current link, better compliance with Fitts law, fixed broken piazza link, added link for lab submissions, and reordered lecture notes.

## Rankings

- #136,675 — Overall

## Permissions and access

### Permissions

- `scripting`

### Host permissions

- `*://mcs.utm.utoronto.ca/~209/23s/*`

### Content script matches

- `mcs.utm.utoronto.ca`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** Moderate 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/improve-209)