ViewportLint Desk by Charlotte
Audit the active page for practical layout, accessibility, and frontend quality issues.
Available on Firefox for Android™Available on Firefox for Android™
Extension Metadata
About this extension
ViewportLint Desk is a Extension for web developers, QA reviewers, and site editors who need a quick page-quality check before shipping or publishing. It audits only the active HTTP or HTTPS page after a user action, stores reports locally, highlights detected elements on request, and exports shareable reports.
Features
Features
- Audit the active page from the toolbar, context menu, keyboard shortcut, or report page.
- Detect practical frontend issues:
- Missing responsive viewport meta tag.
- Horizontal overflow elements.
- Images without
altattributes. - Links and buttons without accessible names.
- Form controls without labels.
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Permissions and data
Required permissions:
- Input data to the clipboard
- Access browser tabs
Required data collection, according to the developer:
- Website content
More information
- Add-on Links
- Version
- 1.0.0
- Size
- 39.55 KB
- Last updated
- 5 days ago (Jun 17, 2026)
- Related Categories
- License
- Mozilla Public License 2.0
- Version History
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