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Preview of WindowSizer

WindowSizer by Dr. Cheap

Quickly resize the window to one of your favorite sizes

4 (40 reviews)
1,459 Users
You'll need Firefox to use this extension
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Screenshots
Easy setupQuick access via toolbarEdit existing presets
About this extension
Define custom presets and switch between them via toolbar menu and/or hotkeys.

Features include:
  • Make presets with custom width, height, name
  • Switch window size via toolbar popup menu
  • Switch window size via customizable shortcut key
  • Edit existing presets
  • Change order of existing presets
  • Quick-fill preset values based on current window size
  • Backup & restore settings
  • Firefox Sync support for backups
  • Light & dark theme icons
Developer comments
Please report issues & request features via GitHub -- use the Support Site link.
Rated 4 by 40 reviewers
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More information
Add-on Links
Version
1.5.0
Size
60.84 KB
Last updated
17 hours ago (Aug 3, 2025)
Related Categories
License
Mozilla Public License 2.0
Version History
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Release notes for 1.5.0
Added Quick Resize feature
Added an Update option for backups
Fixed button spacing in presets area
Improved performance of size indicator in popup
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