Draggable Black Rectangle icon

Draggable Black Rectangle

by yto · Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

A tool to place resizable, copyable, and deletable black boxes on any page for privacy when screen sharing.

Users
484
+75 in 30 days
Rating
4.7 / 5
unchanged in 30 days
Ratings
3
0 in 30 days
Store rank
#44K
#37K among extensions
Version
0.2
updated 22 Jul 2025

Users

monthly, 15 months
0242484Jul 2025Mar 2026Oct 2026
Latest, 16 Oct 2026: 484 usersMove the mouse over the chart for any month

Ratings count

monthly, 15 months
023Jul 2025Mar 2026Oct 2026
Latest, 16 Oct 2026: 3 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Draggable Black Rectangle

draggable black rectangle lets you instantly mask any on-page content with a solid black box—no fiddly blur tools or incognito tabs required. Click the toolbar icon or hit Ctrl+Shift+Y (Windows/Linux) / ⌘+Shift+Y (macOS) to place a resizable, draggable overlay exactly where you need it. Need multiple masks? Just hit the copy button to clone an existing box. When you’re done, click the ✖ button to remove it. Designed for seamless screen sharing, this extension ensures your passwords, private notes, or sensitive data stay hidden—even as you navigate or reload pages. Masks persist across navigation so you can focus on your call or presentation without interruption. No setup or configuration—install, click, and share with confidence. § draggable black rectangle を使えば、面倒なぼかしツールやシークレットタブを開くことなく、ページ上の任意のコンテンツを黒いボックスで瞬時に隠せます。ツールバーアイコンをクリックするか、Ctrl+Shift+Y(Windows/Linux)または ⌘+Shift+Y(macOS)で、必要な場所にドラッグ&リサイズ可能なオーバーレイを配置。複数箇所を隠したいときはコピー📄ボタンを押すだけで複製、終了時は✖ボタンで削除できます。 画面共有に特化した設計により、パスワードやプライベートノート、機密データをナビゲーション中やリロード中でもしっかり隠し続けます。マスクはページ移動後も持続するので、プレゼンやビデオ通話に集中でき、面倒な設定は一切不要です。安心してすぐにインストール&利用を開始できます。 § [Version 0.2] Adopted Shadow DOM for the rectangle component to isolate it from page styles, ensuring a consistent design and control layout on any website. § github: https://github.com/yto/draggable-black-rectangle developer: yto (タツヲ) https://x.com/yto

Growth

WindowUsersChangeRatingsRating
7 days+35+7.8%00.00
30 days+75+18.3%00.00
6 months+245+102.5%+1+0.17
1 year+378+356.6%+2−0.33

Version history

2 versions recorded
0.222 Jul 2025
0.119 Jul 2025

Details

Category
Tools
First seen
19 Jul 2025
Size
9 KB
Languages
en
Pricing
Free
Support
github.com
Extension ID
pjcalmbgdeghknpdicbhmfnfmpmfajpi

Permissions and risk

Moderate riskimpact 3, likelihood 1
Permissions
activeTabscriptingstoragewebNavigation
Site access
<all_urls>
Can read and change data on every website you visit.

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