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How to Check Grammar in Chrome: Free Extension Guide (2026)

June 27, 2026

We've all been there: you hit "Send" on an important email only to notice a glaring typo seconds later. Whether it's a client proposal, a job application, or a quick Slack message, grammar mistakes can undermine your credibility. The good news is that a Chrome grammar extension can catch these errors in real time, right where you write. This guide will show you how to set one up in under 5 minutes so you never send an embarrassing typo again.

Why Use a Grammar Extension Instead of a Standalone App?

Standalone grammar checkers require you to copy text into a separate tool, wait for results, and paste corrections back. A Chrome extension removes all of that friction:

• Real-time feedback — Errors are underlined as you type, so you can fix them instantly without breaking your flow.
• Works everywhere — Gmail, Google Docs, LinkedIn, GitHub, Notion, Slack, and virtually any text field in your browser.
• No context switching — You stay in the app you're already using. No new tabs, no copy-pasting, no extra logins.
• Zero extra steps — Once installed, the extension runs automatically in the background. There's nothing to launch or remember.

The Best Free Chrome Grammar Extension: Typlx

Typlx is a free, open-source grammar checker that runs entirely inside your browser. Unlike cloud-based alternatives that upload every keystroke to a remote server, Typlx processes your text locally using a lightweight language model. That means your writing stays private by default, and the extension works even when you're offline.

• Your text never leaves the browser — All grammar analysis happens on-device. No data is sent to any server, ever.
• No account required — Install and start using it immediately. No sign-up forms, no email verification, no subscriptions.
• Works offline — The language model is bundled with the extension, so you get full grammar checking even without an internet connection.
• Open-source — The entire codebase is available on GitHub. You can inspect it, contribute to it, or fork it for your own needs.

How to Install Typlx on Chrome

Step 1: Open the Chrome Web Store

Navigate to the Typlx listing on the Chrome Web Store: https://chromewebstore.google.com/detail/typlix.

Step 2: Click "Add to Chrome"

On the Typlx listing page, click the blue "Add to Chrome" button in the top-right corner. A confirmation dialog will appear showing the permissions the extension needs.

Step 3: Confirm the Installation

Click "Add extension" in the confirmation dialog. Chrome will download and install Typlx automatically. You'll see a small Typlx icon appear in your browser toolbar once the installation is complete.

Step 4: Pin the Extension (Optional)

Click the puzzle-piece icon in the Chrome toolbar to open the extensions menu. Find Typlx in the list and click the pin icon next to it. This keeps the Typlx icon visible in your toolbar for easy access to settings and status.

How to Use Typlx in Your Browser

In Gmail

1. Open Gmail and click Compose to start a new email.
2. Begin typing your message. Typlx will automatically underline grammar and spelling errors with a colored highlight.
3. Hover over or click on an underlined word to see Typlx's suggested correction.
4. Click the suggestion to accept it, or dismiss it if the original text is intentional.
5. Review the rest of your email and send it with confidence.

In Google Docs

1. Open an existing document or create a new one in Google Docs.
2. Typlx activates automatically and begins scanning your text as you type.
3. Grammar issues appear as underlined suggestions inline with your document.
4. Click on a suggestion to see the recommended fix and apply it with a single click.

Tip: If you're working on a long document, you can use the Typlx toolbar icon to see a summary of all detected issues at once, making it easier to review and fix them in bulk.

In LinkedIn, GitHub, Notion, and Other Web Apps

Typlx works in virtually any text field on the web. Whether you're writing a LinkedIn post, drafting a pull request description on GitHub, editing a page in Notion, or leaving a comment on a blog, Typlx monitors your input and surfaces grammar suggestions in real time. There is no additional configuration required — if you can type in it, Typlx can check it.

Adjusting Typlx Settings

Enable/Disable

Click the Typlx icon in your browser toolbar to toggle the extension on or off for the current tab. You can also disable it globally from the extension's settings page if you need to pause grammar checking temporarily.

Site Exclusions

If there are specific websites where you don't want Typlx to run, you can add them to the exclusion list:

• Open Typlx settings by clicking the toolbar icon and selecting "Settings".
• Navigate to the "Site Exclusions" section.
• Enter the domain (e.g., example.com) and click "Add".
• Typlx will no longer activate on pages from that domain.

Sensitivity Settings

Typlx lets you control how aggressively it flags issues. In the settings panel, adjust the sensitivity slider to choose between a relaxed mode (only obvious errors) and a strict mode (stylistic suggestions, passive voice, wordiness, and more). Find the level that matches your writing style and workflow.

Incognito Mode

By default, Chrome extensions are disabled in Incognito windows. To enable Typlx in Incognito mode:

1. Open chrome://extensions in your browser.
2. Find Typlx in the list and click "Details".
3. Toggle the "Allow in Incognito" switch to on. Typlx will now check grammar in Incognito windows as well. Since Typlx processes everything locally, your privacy is maintained even in Incognito mode.

Comparing Free Chrome Grammar Extensions

Feature	Typlx	Grammarly	LanguageTool
Fully free core	Yes	Limited (premium upsell)	Limited (premium upsell)
Local/offline processing	Yes	No (cloud-based)	No (cloud-based)
No account required	Yes	No	No
Open-source	Yes	No	Partially
LLM-powered	Yes	Yes	No
Works in Gmail	Yes	Yes	Yes
Works in Google Docs	Yes	Yes	Yes

Frequently Asked Questions

Is Typlx really free?

Yes. Typlx is completely free to use with no premium tiers, usage limits, or hidden fees. The project is open-source under the MIT License, so you can verify this yourself by reviewing the source code on GitHub.

Does Typlx send my text to a server?

No. All grammar processing happens locally in your browser using a bundled language model. Your text never leaves your device, which makes Typlx one of the most privacy-respecting grammar checkers available.

Can I use Typlx on Firefox or other browsers?

Typlx is currently available as a Chrome extension and works on all Chromium-based browsers, including Microsoft Edge, Brave, and Vivaldi. A dedicated Firefox extension is also available — check the Typlx website for the latest download links.

Does Typlx work with languages other than English?

Typlx currently focuses on English grammar and spelling. Support for additional languages is on the roadmap. Follow the project on GitHub to stay updated on new language releases.

How do I report a bug or request a feature?

Head to the Typlx GitHub repository and open an issue. The team actively reviews community feedback and contributions are always welcome.

Get Started in Under 5 Minutes

Setting up grammar checking in Chrome doesn't have to be complicated. With Typlx, you install one extension, and it works everywhere you write — no account, no cloud, no cost. Your text stays private, corrections happen in real time, and the whole setup takes less than five minutes.

Ready to write with confidence? Install Typlx from the Chrome Web Store and start catching errors before anyone else does.

Typlx is free and open-source. Also available as a mobile keyboard for Android and iOS.

Last updated: June 2026