# Fastimba

> Adds Vim keybindings, relative line numbers, and Emmet to Scrimba's Monaco editor.

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

## Overview

- **ID:** `fastimba`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Anamay
- **Category:** other
- **Version:** 0.3.0
- **Last updated:** 2026-07-14
- **First published:** 2026-05-15
- **Size:** 214 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/fastimba/)

## Description

Fastimba adds power-user editor features to Scrimba's embedded Monaco editor: Vim keybindings, relative line numbers, and Emmet support, all in one extension.

Features:
- Vim mode with a custom status bar showing mode, key buffer, cursor position, and command input
- Relative line numbers relative to the cursor
- Emmet abbreviation expansion for HTML, CSS, SCSS, LESS, JavaScript, TypeScript, JSX and TSX
- Pomodoro Timer for productivity
- Overlay panel with course info and feature toggles
- Works only on <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/6d81381bee77cdd8adf94192b0c32410fe3bd228ff7a7a28f4a3b814048bc285/http%3A//scrimba.com" rel="nofollow">scrimba.com</a>

Note: Fastimba is unofficial and not affiliated with or endorsed by Scrimba.

## Rankings

- #140,461 — Overall

## Permissions and access

### Content script matches

- `scrimba.com`

## Safety

- **Risk impact:** Low risk impact
- **Risk likelihood:** High 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/fastimba)