Demo WebExtension (MV3) 作者： sudokucomvn

Quickly toggle a red outline around the current page from the popup. Lightweight, no background process, works only on the active tab; collects no user data.

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One-click tool to draw a red outline around the current page for quick layout checks, QA, demos, and focus. Runs only when you click the popup, affects only the active tab, and stores no data. No background script, no tracking. No telemetry. Private.

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