Resize Window & Viewport Firefox

Resize Window & Viewport

Resize browser window or viewport to desired screen widths. Firefox's Responsive Design Mode (Ctrl + Shift + M) is great for mobile devices emulation.

Features & Capabilities

The Resize Window & Viewport Chrome extension offers a simple and effective way to resize your browser window or viewport to your desired screen widths. Ideal for web developers and designers, it enables quick testing of responsive layouts and device emulations without relying solely on built-in browser tools like Firefox's Responsive Design Mode. This extension streamlines the workflow for checking how websites appear on different screen sizes, improving productivity and design accuracy.

User Growth & Download Statistics

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:
Moris Papasmadov
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/resize-window-viewport/

User Reviews

Users find the 'Resize Window & Viewport' add-on effective at quickly resizing window width with a simple interface. The Ctrl+Shift+M shortcut aids responsive design testing but does not work on Mac OS. Major limitations include inability to resize window height, lack of customization options for sizes, and issues with the window size resetting after page reloads. While functional and easy to use, users desire more flexibility and stability, especially for large screen sizes and saved custom dimensions.
Pros
  • Performs its stated function of resizing window width promptly and effectively.
  • The Ctrl+Shift+M (responsive mode) feature is helpful for checking breakpoints.
  • Simple and straightforward interface that is easy to use.
  • Potential for improvements noted by users, reflecting active interest in the add-on.
Cons
  • Only resizes the width of the window and viewport, does not support height adjustments.
  • Lacks customization options such as adding more sizes or custom dimensions.
  • Ctrl+Shift+M shortcut does not work on Mac OS as expected.
  • Does not 'stick' - sites reload and revert to full screen size, reducing usefulness.
  • Inadequate support for larger screen sizes and multipoint dimensions.
Recent reviews
by co*****, 2025-07-22

by 天灭*****, 2025-03-30

Only supports width and the "viewport" options don't resize the viewport, they resize the actual window making them redundant.
by LW*****, 2023-03-13
View all user reviews ›

Is Resize Window & Viewport 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.

Resize Window & Viewport 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 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.

Resize Window & Viewport 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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