By: ProWritingAid
Gain confidence in your writing with the best grammar checker and paraphrasing tool that works wherever you do.
Features & Capabilities
User Growth & Download Statistics
Manifest V2 Add-on
- By:
- ProWritingAid
- Daily users:
- 2,469 -102
- Rating:
- 3.25 (24)
0.10
- Version:
- 2.8.16692 Last updated: 2026-06-18
- Version code:
- 6312442
- Creation date:
- 2019-02-25
- Risk:
- Very high risk impact High risk likelihood
- Permissions:
- tabs
- cookies
- http://*/*
- https://*/*
- storage
- clipboardRead
- clipboardWrite
- notifications
- tabs
- Content scripts matches:
- *
- docs.google.com
- *
- Size:
- 42.99MB
- Email:
- he*****@prowritingaid.com
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-21
- Compare stats and ranking:
- ProWritingAid vs Grammarly: AI Writing and Grammar Checker App
- ProWritingAid vs Pencilo: AI Writing Assistant
- ProWritingAid vs ProWritingAid Companion
Ranking
Other platforms
For Developers
Contact the developer
Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
User Reviews
Pros
- Provides comprehensive grammar, spelling, and style suggestions, including alternative phrasings, helping writers catch errors and improve wording.
- Works across many sites and text fields, integrating smoothly without being intrusive.
- Cheaper than Grammarly and offers a useful free tier, making it a cost‑effective alternative.
- Ongoing improvements from developers and helpful for writers who miss typos or awkward sentences.
- In some contexts, offers more coverage than Grammarly or Language Tool on certain situations.
Cons
- Significant performance impact: slows down the browser and introduces typing lag on most sites.
- Most advanced features are behind a paywall; free account is limited (e.g., word limits).
- Confusing or cluttered user interface that makes it hard to use all tools at once.
- Privacy concerns and settings can be ignored or require full disablement to protect privacy.
- Occasional glitches and inconsistent behavior that further hinder typing experience.
Recent reviews
It's been months that I have been using it on Firefox, it's TERRIBLE. It keeps crashing, not working even for a second before firefox complains about it. And I am a paid member, so...I can't... *screaming, tearing hair out*
by Fi*****, 2026-06-16
slows down the browser. Almost 90% of the features advertised are behind the paywalls. Rather would use grammarly.
by yo*****, 2025-12-06
by us*****, 2025-08-04
Is ProWritingAid 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.
ProWritingAid requires a lot of sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
- Critical ******* ****** ** *** ********* ******** **********
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
- High ****** ******* *** ********* ********* ******** ***** *** ** ********** ****** * ******** ******* *****
- Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
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.
ProWritingAid may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.
Risk likelihood analysis details
- High This extension website URL may be invalid
- High **** ********* *** ******** ******* ** *** **** ****** *** ******* *** *** ** ****** ** *****
- High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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