By: Readwise
The Readwise Highlighter is the official browser extension made by and maintained by the Readwise team that saves articles to your Reader account and enables you to optionally highlight the open web.
Features & Capabilities
User Growth & Download Statistics
- By:
- Readwise
- Daily users:
- 5,880 -181
- Rating:
- 4.04 (24)
- Version:
- 0.17.0 Last updated: 2026-04-27
- Version code:
- 6237740
- Creation date:
- 2021-05-18
- Risk:
- High risk impact Moderate risk likelihood
- Permissions:
- Content scripts matches:
- <all_urls>
- <all_urls>
- Size:
- 2.75MB
- Email:
- he*****@readwise.io
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-21
- Compare stats and ranking:
- Readwise Highlighter vs Readwise Exporter
- Readwise Highlighter vs Readwise
- Readwise Highlighter vs Scribd Readwise Integration
Ranking
For Developers
Contact the developer
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User Reviews
Pros
- The service provided by the add-on is generally good and works well when functioning.
- The developers and team behind Readwise are praised for their innovative and transformative approach.
- The add-on enhances creativity and productivity via improved workflows.
Cons
- Significant privacy concerns due to extensive data tracking by the add-on.
- Requirement to log in to the Readwise site to use the extension, which some users dislike.
- Technical issues including failure to highlight in certain contexts like Wikipedia articles and errors like 'Failed to save page'.
- Lack of conditional permission controls in Firefox due to Manifest v2 limitations, causing privacy issues; update to Manifest v3 is needed.
Recent reviews
It works fine, but requires some performance overhaul. It slows down overall tab loading significantly... so I have needed to disable it.
by Fi*****, 2026-05-17
by My*****, 2026-03-07
by Fi*****, 2025-06-02
Is Readwise Highlighter 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.
Readwise Highlighter 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.
Readwise Highlighter is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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