How to use the extension?

Using the extension:

1. Reload any open web pages to activate the extension. You only need to do this once. 😉
2. Click on any text field and start typing
3. A small green square will appear and turn red when you make a mistake (or more 🙊)
4. Click on the underlined words to correct them with a single click!

More information via this link.

Identify all the errors in your text at a glance

The list of errors, called the alert panel, is very useful for getting an overview of the errors in your texts and allows you to increase your productivity.

Correct your most subtle errors in one click

Click on the underlined words and simply apply the corrections.

Learn as you write

MerciApp helps you make continuous progress thanks to contextual information.

Correct whenever you want

Don't need corrections on a particular site? Easily disable them from the MerciApp pop-up in the extension bar.

Build your dictionary

MerciApp may consider certain words you use every day to be errors. Teach it so that the alerts no longer appear.

Pin the extension (Google Chrome)

For added convenience, you can pin the extension to create a new document or disable correction at any time.

Updated on: 11/02/2026