Bionic Reader

Name: Bionic Reader
Rating: 3.8667 (60 reviews)
Author: Rain Jr.

- Apply Bionic Reading style with adjustable strength to a webpage. - Adjustable vowels for different languages. - Adjustable font family, font size, font weight and font opacity. - Support Unicode characters. - Apply dark mode to a webpage.

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Features & Capabilities

Bionic Reader is a powerful Chrome extension designed to enhance your reading experience on any webpage. It applies the innovative Bionic Reading style with adjustable strength, allowing you to emphasize key parts of the text for quicker comprehension. You can customize which vowels are treated for different languages, ensuring functionality across diverse linguistic needs.

Beyond text styling, Bionic Reader offers extensive font customization options including font family, size, weight, and opacity, enabling you to tailor the appearance according to your preferences. It fully supports Unicode characters, ensuring proper display of various scripts. Additionally, the extension features a dark mode toggle to reduce eye strain during nighttime reading. While certain websites and iframe content may have compatibility constraints, shortcut keys and a user-friendly options menu allow easy control of features for an optimal reading experience.

User Growth & Download Statistics

Add-on Accessibility

By:

Daily users:

Rating:

Version:

1.6.25 Last updated: 2024-01-08

Version code:

5674561

Creation date:

2022-07-15

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

31.90KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-16

Compare stats and ranking:

Ranking

# 1,411 ▼ 17

Other rankings

#57 in Language Support

#223 in Appearance ▼ 4

#23 in reader keyword 71 ▼ 1

#37 in algorithm keyword 3

#41 in header keyword 27 ▲ 1

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For Developers

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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:

Rain Jr.

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/bionic-reader/

User Reviews

Reviewers praise Bionic Reader for strong typography customization and persistent, free-use features, but report major compatibility issues, unreliable saving, weak site-control options, and occasional text duplication that hamper everyday use.

Pros

Strong typography customization across sites (emphasis styles and font choices).
Settings persist across sessions and can be easily reset to default.
Free to use and accessible.
Works across dynamic websites / broad site coverage.

Cons

Breaks or garbles pages on many sites (e.g., WhatsApp Web, YouTube, ChatGPT, Sudowrite, Substack, Medium).
Saving changes is unreliable or the save button is missing, so settings may not be retained.
Weak per-site controls: no wildcard support for blacklists, no easy page exclusion, and limited element-targeting options.
Text duplication or repeated text on certain pages that disrupts reading.

Recent reviews

by Fi*****, 2025-12-18

Convoluted and user-unfriendly.

by mn*****, 2025-11-06

This extension can be helpful but it prevents webpages from rendering TeX, making it useless for a lot of technical reading. I couldn't find a way to make it escape TeX characters easily, although it seems like something that should be doable.

by 2a*****, 2025-06-23

View all user reviews ›

Is Bionic Reader 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.

Bionic Reader requires some sensitive permissions that could impact your browser and data security. 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.
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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.

Bionic Reader has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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