Zoom for Firefox

Zoom in or out on web content using the zoom button and mouse scroll wheel for more comfortable reading. That to each percent value. It helps you to zoom easily in and out a web page. Thanks to the slider and the zoom buttons.

Zoom for Firefox is a powerful browser extension designed to improve your web viewing experience by allowing custom zoom levels from 1% to 400%. Featuring a responsive slider, zoom buttons, and mouse scroll zoom, it offers precise control over webpage scaling. The extension saves zoom settings per website, ensuring your preferred zoom levels are restored automatically.

Ideal for users with vision impairments or those seeking comfortable reading, Zoom offers various zoom engines including default browser zoom, CSS zoom for smooth scaling, and font-size adjustment that targets text only. Additional features include zooming all open tabs simultaneously, displaying zoom percentages on the toolbar button, customizable zoom steps, right-click menu options, and visual magnifiers around the cursor.

Zoom also enhances video players like YouTube™ by increasing their size alongside the webpage. With accessible options for larger popup windows and the ability to reset zoom to default, Zoom for Firefox provides a highly customizable and user-friendly zooming solution for effortless web browsing.

By:
Stefan vd
Daily users:
5,140 -24
Rating:
4.41
(95)
Version:
2.8.18.0 Last updated: 2025-06-14
Version code:
5969298
Creation date:
2015-03-24
Risk:
High risk impact Moderate risk likelihood
Permissions:
  • tabs
  • contextMenus
  • storage
  • scripting
  • webNavigation
  • unlimitedStorage
Host permissions:
  • <all_urls>
Size:
401.15KB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Browser Add-ons
Updated:
a day ago

Other platforms

Zoom for Google Chrome (v2.8.18.0)
300,000 4.20 (1,724)
Zoom for Microsoft Edge (v2.8.18.0)
286,510 4.10 (31)

User reviews

Users appreciate the add-on's simplicity and its ability to remember custom zoom levels per domain, making it useful especially for large screens. However, common issues include the magnifying glass feature being broken, malfunctioning on Android Firefox, zooming not being centered correctly, and some UI/UX shortcomings in the options and context menu. Despite these problems, when used with certain settings, the extension performs effectively and the developer support is well-regarded.
Pros
  • Allows custom zoom levels per domain and remembers the zoom setting for each site.
  • Simple and easy-to-use interface with basic zoom controls (+, - buttons).
  • Works well for large screens and enhances readability when text is too small.
  • Offers multiple zoom methods including built-in browser zoom and web page level zoom, when used correctly.
  • Responsive and helpful support from the developers.
Cons
  • Magnifying glass feature does not work or is broken in current versions.
  • Does not work properly on Android Firefox; often does not function at all on that platform.
  • Zooming is sometimes not centered correctly, often zooms only on the left part of the website.
  • Issues with integration and functionality compared to the Chrome version of the extension.
  • User interface and options are poorly designed, including poorly formatted options page and inaccessible options from context menu.
Recent reviews
by An*****, 2025-06-07

by Fi*****, 2025-05-23

Not working at all on android ff
by Ik*****, 2025-05-16
View all user reviews ›

Extension safety

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.

Zoom for Firefox 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 Browser Add-ons, 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.

Zoom for Firefox is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
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  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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Upgrade to see full risk analysis details

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