Clever Checker

Name: Clever Checker
Author: Clever Checker

By: Clever Checker Add-on

Run every Clever Checker writing check on selected text, without leaving the page.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-08-01

Version:

0.3.2

Last updated: 2026-07-31

Features & Capabilities

Clever Checker puts the whole cleverchecker.com toolkit in a side panel, so you can check writing where you wrote it instead of pasting it into another tab.

Select text on any page, right-click, and pick Clever Checker. The panel opens with your selection already in it.

Grammar and spelling, checked as you type, with corrections you apply in one click
AI-writing detection, scored sentence by sentence
Plagiarism, matched against sources on the open web
Readability, word and keyword counts, reading time
Paraphrasing, humanising and summarising, written back into the field you were typing in

Nothing is set up and nothing is configured. There is no sign-in step and no server address: open the panel and press the button. Five checks a day are free without an account, and signing in on the website carries a subscription across to the panel.

The panel only ever sees text you select or type into it. It does not read the pages you browse, and it carries no analytics.

User Growth & Download Statistics

Add-on

By:

Clever Checker

Daily users:

Version:

0.3.2 Last updated: 2026-07-31

Version code:

6386048

Creation date:

2026-07-22

Risk:

Permissions:

Host permissions:

https://cleverchecker.com/*

Size:

219.31KB

Email:

he*****@cleverchecker.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-08-01

Compare stats and ranking:

Ranking

# 127,642 ▲

Other rankings

#31 in paraphraser keyword 35 ▲ #31 in paraphrasing keyword 45 ▲ #42 in paraphrase keyword 41 ▲

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:

Clever Checker

Firefox Add-ons Store

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

Email:

he*****@cleverchecker.com

Website:

https://cleverchecker.com

Is Clever Checker 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.

Clever Checker requires very minimum permissions.

Risk impact analysis details

High Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
Low ******* ****** ** *** ********* ******** *****************

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.

Clever Checker 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 was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** ******** ****** *** ********** *** *** ** ****** ** *****
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****