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
Overview
Features & Capabilities
User Growth & Download Statistics
Manifest V3 Add-on
- By:
- EvoMark
- Daily users:
- 1 -1
- Version:
- 1.0.1 Last updated: 2026-07-09
- Version code:
- 6341167
- Creation date:
- 2026-07-06
- Risk:
- Moderate risk impact High risk likelihood
- Permissions:
- Content scripts matches:
- <all_urls>
- <all_urls>
- Size:
- 26.68KB
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-07-26
- Compare stats and ranking:
- Viewport & Tailwind CSS Container Inspector vs BreakIt
- Viewport & Tailwind CSS Container Inspector vs Breakpoint Viewer
- Viewport & Tailwind CSS Container Inspector vs Tailwind CSS Media Query Inspector
Ranking
For Developers
Contact the developer
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Is Viewport & Tailwind CSS Container Inspector 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.
Viewport & Tailwind CSS Container Inspector requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
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.
Viewport & Tailwind CSS Container Inspector is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.
Risk likelihood analysis details
- High This extension was recently updated in the past month. New updates may not be stable or safe.
- High **** ********* *** ******** ****** *** ********** *** *** ** ****** ** *****
- High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
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