Tools
Stable signalUnknownHigh-risk permissions
Duplicate Tab Sentinel icon

Duplicate Tab Sentinel

Warn about duplicate tabs with a prominent overlay and let you inject CSS to tune the page appearance when URLs match your rules.

Users2Current public install base
Rating--Store average score
Reviews0Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview

Duplicate Tab Sentinel Media preview

1 assets
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222222026年6月11日2026年6月14日2026年6月17日Latest: 2
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Technical snapshot

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Version0.2.2
ManifestV3
Size169KiB
Languages1日本語
Published
Store updated
Last crawled
日本語
Overview

Product summary

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概要

- Duplicate Tab Sentinel は、指定した正規表現にマッチするタブが複数開かれた瞬間に全ての該当タブへ警告オーバーレイを表示し、見落としを防ぎます。

- オーバーレイは視認性の高いデザインで、重複タブ数を即時に表示。不要なタブを閉じる判断をサポートします。

- ポップアップの簡潔な設定画面から、監視対象のURLパターンや正規表現フラグ、さらに任意のカスタムCSSを保存し、警告時の見た目を自由に微調整できます。

- すべての動作はローカルで完結し、Chrome の storage／tabs／scripting 権限のみを利用する最小構成です。

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