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BMBoard in your browser's side panel — open instantly beside any page, right-click to send images & text straight to the board. BMBoard(bmboard.studio)は、無限キャンバスの黒板アプリ。Black Mirror Browser は、それをふだんのブラウジングの中に持ち込む Chrome 拡張です。 ■ サイドパネルの黒板 ツールバーのアイコン、または Cmd/Ctrl+Shift+Y で、見ているページの横にいつでも BMBoard を開けます。資料を見ながらメモ・スケッチ・図解。閉じるまでページをまたいで表示したまま。 ■ ページから BMBoard へ送る 画像を右クリック → 「Send image to BMBoard」 テキストを選択して右クリック → 「Send "…" to BMBoard」 サイドパネルの黒板にそのまま貼り付きます。 ■ プライバシー データの収集・送信は一切ありません。アナリティクスもトラッキングもアカウントもありません。 ──────────────────────────────── BMBoard (bmboard.studio) is an infinite-canvas blackboard app. Black Mirror Browser brings it into your everyday browsing as a Chrome extension. ■ Side-panel blackboard Open BMBoard alongside any page from the toolbar icon, or with Cmd/Ctrl+Shift+Y. Take notes, sketch, or diagram while you read — the panel stays open across pages until you close it. ■ Send to BMBoard from any page Right-click an image → "Send image to BMBoard" Select text and right-click → "Send '…' to BMBoard" It lands directly on the side-panel blackboard. ■ Privacy We collect nothing and send nothing. No analytics, no tracking, no accounts.
Jun 4, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.