One click

Add to Firefox

Signed by Mozilla and installed in the tab you are already in. Same checkers, same reports.

Add to Firefox

How to use it

Select some text Open Clever Checker

The panel checking grammar: fourteen issues found, each correction listed beside the marked-up text.
Grammar, as you type
The panel scoring text for AI writing: 90% AI-generated, with every sentence marked as AI-like, mixed or human.
An AI score per sentence
The panel scoring readability: a post-graduate reading level and the six formula scores under it.
What makes it hard to read

Nothing to set up

What happens next

Firefox asks you to confirm, then the icon is in the toolbar.It keeps itself up to date from there.

Where to use it

Everywhere you browse

Other browsers: Chrome, Safari, Edge, Brave, Opera, Yandex, Vivaldi, or the full list.

Back to the extension