GrammarJo — Powered by JoJo

Name: GrammarJo — Powered by JoJo
Author: Rasoul

By: Rasoul

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.

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Features & Capabilities

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)

User Growth & Download Statistics

Add-on

By:

Rasoul

Daily users:

Version:

1.1.0 Last updated: 2026-04-30

Version code:

6241718

Creation date:

2026-04-24

Risk:

Permissions:

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

Content scripts matches:

<all_urls>

Size:

32.66KB

Email:

jo*****@live.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-18

Compare stats and ranking:

Ranking

# 130,296 ▲ 3,330

Other rankings

#43 in grammar keyword 70 #48 in ai grammar keyword 73 ▼ 1

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Rasoul

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/grammarjo/

Email:

jo*****@live.com

Website:

https://grammarjo.netlify.app/

Permission Change History

2026-04-30: Version 1.0.0 → 1.1.0

Add Permissions: *://localhost/* *://127.0.0.1/*

Is GrammarJo — Powered by JoJo Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

GrammarJo — Powered by JoJo requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

GrammarJo — Powered by JoJo is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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