Viewport & Tailwind CSS Container Inspector by EvoMark
Shows the viewport width in px and rem, plus if Tailwind CSS is discovered on the page it will show the matching Tailwind container breakpoint, in a small overlay. You can change the settings for a few different themes and positioning and can also be
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About this extension
Shows the viewport width in px and rem, plus if Tailwind CSS is discovered on the page it will show the matching Tailwind container breakpoint, in a small overlay. You can change the settings for a few different themes and positioning and can also be enabled/disabled.
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Permissions and data
Required permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.0.1
- Size
- 26.68 KB
- Last updated
- a month ago (Jul 6, 2026)
- Related Categories
- License
- Mozilla Public License 2.0
- Version History
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