# GrammarJo — Powered by JoJo

> GrammarJo helps you improve selected text directly in any webpage input field with one click—fix grammar, adjust tone, and rewrite faster using your preferred AI provider.

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

## Overview

- **ID:** `grammarjo`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Rasoul
- **Category:** privacy-security,language-support,social-communication
- **Daily users:** 3
- **Weekly downloads:** 1
- **Version:** 1.1.0
- **Last updated:** 2026-04-30
- **First published:** 2026-04-24
- **Size:** 33 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/grammarjo/)
- **Website:** [https://grammarjo.netlify.app/](https://grammarjo.netlify.app/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/grammarjo/privacy/](https://addons.mozilla.org/firefox/addon/grammarjo/privacy/)

## Description

GrammarJo is a lightweight writing assistant extension for Firefox and Chrome.
Select text in an input/textarea or editable field, click GrammarJo, and instantly get an improved version you can accept and replace.
Key capabilities:
Grammar correction and tone rewriting modes (Friendly, Formal, Concise, Confident, Casual, and more)
Works with multiple providers:
Anthropic API
Local Ollama (including Docker setups)
OpenAI-compatible servers (for example LM Studio, Jan, or self-hosted endpoints)
In-context editing flow with regenerate and quick replace
Keyboard-friendly mode switching and navigation
Provider settings panel with local storage of your configuration
Privacy approach:
No GrammarJo backend
No account required
No analytics/telemetry by default
Your selected text is sent only to the provider endpoint you configure (cloud or local)

## Rankings

- #54,101 — Overall
- #30 — grammar
- #35 — ai grammar
- #232 — power

## Permissions and access

### Permissions

- `activeTab`
- `storage`
- `*://api.anthropic.com/*`
- `*://localhost/*`
- `*://127.0.0.1/*`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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/grammarjo)