Power Thesaurus

Name: Power Thesaurus
Rating: 4.7794 (68 reviews)
Author: Power Thesaurus

By: Power Thesaurus Add-on

Use the power of synonyms by button in toolbar, right-click or by word selection on any page.

Overview

Firefox Add-ons Store

Daily users

7,270 ▲ 55

Data as of 2026-10-05

Rating:

4.78 ▼ 0.01

(68)

Version:

4.6.0

Last updated: 2026-09-07

Features & Capabilities

Power Thesaurus helps you find accurate synonyms, antonyms, and definitions while writing, editing, browsing, or studying online. Search from the toolbar, select a word on any page for instant results, or right-click to access PowerThesaurus.org. Results include convenient one-click copying for a faster writing workflow.

Customize the experience with on-page tool controls, smart popup placement, system, light, or dark themes, and an easy toolbar toggle. PRO members get infinite scrolling, personalized term lists, and advanced part-of-speech filters. The extension processes search queries and account login data to provide its features and does not collect or share personal browsing history.

User Growth & Download Statistics

Add-on Writing Education

By:

Daily users:

Rating:

Version:

4.6.0 Last updated: 2026-09-07

Version code:

6467582

Creation date:

2016-04-15

Firefox add-on GUID:

@powerthesaurus.org

Firefox add-on numeric ID:

697681

Weekly download count:

209

Firefox on Android:

Risk:

Permissions:

Host permissions:

<all_urls>

Content scripts matches:

*.powerthesaurus.org
<all_urls>

Size:

4.34MB

Email:

fi*****@powerthesaurus.org

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-10-05

Compare stats and ranking:

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:: Power Thesaurus
Firefox Add-ons Store: https://addons.mozilla.org/firefox/addon/power-thesaurus/
Email:: fi*****@powerthesaurus.org
Website:: https://www.powerthesaurus.org/

Permission Change History

2024-10-29: Version 3.0.15 → 4.2.3

Add Host permissions: <all_urls>

Add Permissions: scripting activeTab clipboardWrite

User Reviews

Overall, reviewers praise its simple, elegant design and practicality. It’s viewed as a handy tool for reading and writing, quickly providing definitions, synonyms, and antonyms by highlighting a word. The right-click thesaurus and the inclusion of rhyming words are frequently cited benefits that help editing and expression. The extension is described as smooth to use with few issues. A minority mention occasional display glitches or compatibility quirks with other extensions, but such reports are not widespread. Overall, strong positive sentiment with only minor caveats.

Pros

Simple and elegant, yet highly effective.
Handy tool for reading, definitions, and synonyms; helps non-native speakers express themselves.
Highlighting a word instantly reveals synonyms, antonyms, and definitions; saves time.
Smooth operation that boosts writing/editing productivity.
Right-click thesaurus feature with rhyming words adds value.

Cons

Recent reviews

by Ma***** 2026-10-04

I enjoy words and am a writer. This is a perfect extension for me. It's also extremely easy to use.

by AD***** 2026-09-26

View all user reviews ›

Is Power Thesaurus 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.

Power Thesaurus requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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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.

Power Thesaurus has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension privacy policy URL may be invalid
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