Does Correctly work with local AI models?

Yes. Correctly supports Ollama and LM Studio, and it can also use Chrome Free AI with Gemini Nano when available in Chrome.

Where is my API key stored?

Correctly stores your API key locally in chrome.storage.local and sends text only to the AI provider you choose.

Which fields does Correctly avoid?

Correctly excludes sensitive and non-prose fields such as passwords, credit cards, numeric fields, disabled fields, readonly fields, and elements that opt out with data-correctly="false".

Open source. Local first. AI powered.

Grammar checking run by your AI.

Correctly is a browser extension for Chrome and Firefox that checks writing in-place using local models, on-device AI, or your own API key. No Correctly account. No Correctly cloud.

View source Install locally

Open-source codebase
Local and on-device model support
Inline suggestions you control

Writing field

He go to school everyday, but he don't like the long bus ride.

How it is built

Open source, local first, AI powered.

Inspect the source

The extension is plain Manifest V3 code. You can read how text is selected, where keys are stored, and which provider receives a request.

Run AI locally

Use Ollama, LM Studio, or Chrome Free AI when you want grammar checks to stay on your machine.

Keep control

Suggestions appear in-page with explanations. Accept one, accept all, dismiss, or disable Correctly per site.

Model choice

Run the model where it makes sense.

Correctly does not force a hosted service. Use local AI by default, or bring an API provider when that fits your workflow.

Chrome Free AI

Runs with Chrome's built-in Gemini Nano when available. No API key, no provider round trip.

OpenAI

Bring your OpenAI API key and select the model you prefer from the popup.

OpenAI Compatible

Connect services such as Groq, OpenRouter, DeepSeek, or another compatible endpoint.

Ollama

Use local models through Ollama, with extension-side handling for the localhost path.

LM Studio

Point Correctly at LM Studio's local inference server and keep grammar checks on your machine.

Privacy posture

No Correctly cloud sits in the middle.

Configuration stays in Chrome extension storage on your device. Text is processed locally when you choose a local or on-device model, or sent directly to the API provider you configure.

API keys are stored in chrome.storage.local.
Session token usage is kept in chrome.storage.session.
Sensitive field types are automatically excluded.
Sites can opt out with data-correctly="false".

Install

Load it on Chrome or Firefox.

Download correctly-chrome.zip, unzip, open chrome://extensions, enable Developer mode, click Load unpacked, and select the folder.

Make everyday writing cleaner without changing where you write.

Get Correctly