Default Zoom

Set default zoom level for Firefox.

Default Zoom is a minimalist Firefox extension designed to set your preferred default zoom level across web pages, enhancing readability especially on QHD or HiDPI monitors. Unlike bulkier zoom add-ons, it’s incredibly lightweight, with just 30 lines of JavaScript, ensuring minimal performance impact.

The extension respects per-site zoom preferences with one exception: it overrides the default 100% zoom on page reload due to API limitations, ensuring your chosen zoom is always applied without storing extensive per-site data. It requires no special permissions other than storing a single setting, making it privacy-friendly. Being fully open source, users can view or modify the source on GitHub. If simplicity and minimalism are your priorities, Default Zoom offers a clean, effective solution for zoom management in Firefox.

By:
Jamie Nguyen
Daily users:
1,369 -19
Rating:
4.72
(64)
Version:
1.1.3 Last updated: 2020-05-12
Version code:
5023492
Creation date:
2019-01-03
Risk:
Very low risk impact Low risk likelihood
Permissions:
  • storage
Size:
11.35KB
URLs:
Website
Full description:
See detailed description
Source:
Firefox Browser Add-ons
Data ingested on:
2025-07-17

User reviews

Users find Default Zoom a straightforward and reliable add-on for setting a default zoom level in Firefox, praising its simplicity, effectiveness, and respect for Firefox's text zoom settings. However, multiple reviews note it lacks per-site zoom memory and a quick-access interface. With Firefox now including a default zoom setting, some users see the add-on as less essential. Despite this, many appreciate its lightweight nature and ease of use, making it a helpful tool especially for those needing consistent zoom levels across browsing sessions.
Pros
  • Effectively sets and maintains a default zoom level for Firefox.
  • Simple, lightweight, and easy to use without unnecessary permissions.
  • Respects Firefox's 'Zoom Text Only' setting to zoom text only if configured.
  • Works reliably and better than some other zoom add-ons or built-in options.
  • Free and open-source software (FOSS), appreciated by users.
Cons
  • No built-in quick-access button in the extensions bar to change zoom levels rapidly.
  • Does not remember per-site zoom levels; zoom resets to default on browser restart, unlike some other add-ons.
  • Functionality partially redundant as Firefox now offers a built-in default zoom setting, reducing the add-on's unique value.
  • Some users experience that it doesn't affect zoom on all sites or does nothing on certain systems.
  • Limited features—only sets default zoom, lacking advanced customizations or per-site zoom controls.
Recent reviews
I was looking for something like this, works great date (13/05/2025)
by Ma*****, 2025-05-13

It works as intended in Firefox 109.0 It also remembers per-site zoom Just remember to set your default zoom in the extension settings
by Fi*****, 2023-01-23
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.

Default Zoom does not require any sensitive permissions.

Risk impact analysis details
    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.

    Default Zoom 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.
    • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
    • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
    • Good **** ********* *** **** **** *******
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