Video Brightener — Brighten Dark Video Scenes
Brightens dark, hard-to-see scenes in videos. Works in fullscreen and on DRM-protected streaming, with zero external communication.
As of June 2026, Video Brightener — Brighten Dark Video Scenes has 13 users in the Accessibility category.
Usersno change0%
13
13
Ratingno change0%
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— reviews
Reviewsno change0%
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Version
0.4.0
Manifest V3
90-day change · In the last 90 days this extension 1 version update, changed permissions.
History
5 snapshotsTracking since May 14, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| May 14, 2026 | — | — | — | 0.2.1 |
| May 20, 2026 | — | — | — | 0.2.1 |
| May 26, 2026 | 4 | — | — | 0.4.0 |
| Jun 2, 2026 | 7 | — | — | 0.4.0 |
| Jun 8, 2026 | 10 | — | — | 0.4.0 |
| Now | 13 | — | — | 0.4.0 |
Changelog
- May 20, 2026description
■ こんな悩みを解決します ・実況動画の暗いシーンが見えない ・映画やドラマで暗いシーンの細部がわからない ・ホラーゲーム配信の暗部がつぶれて何が起きてるかわからない ・モニターの輝度を上げても、周りが眩しくなるだけで動画は見やすくならない ■ Video Brightenerの特長 ・暗いシーンだけ明るくする「ガンマ補正」を採用 ・「白っぽくなる」を防ぐコントラスト調整を内蔵 ・明るさ・コントラストを個別スライダーで調整 ・プリセット4段階(弱/中/強/最強)でワンクリック切り替え ・フルスクリーン再生でも効く(多くの類似拡張で動かない部分) ・有料配信のDRM動画でも動作 ■ プライバシー ・外部サーバーとの通信は一切行いません ・動画のピクセルデータを読み取ることもありません ・保存される情報は「ON/OFF」「明るさ」「コントラスト」の3項目のみ ・アナリティクスやトラッキングは入っていません ■ 制限事項 ・Picture-in-Picture モードでは仕様上フィルタが反映されません ・一部のハードウェアアクセラレーション環境ではフィルタが効かない場合があります ■ 仕組み(技術的興味のある方へ) SVGフィルタ(feComponentTransfer)でガンマ補正と線形コントラストを2段適用しています。 GPU合成パスで処理されるため、4K60fps動画でも処理負荷はほぼゼロです。 動画フレームをcanvasに描画しないため、Widevine等のDRMでも動作します。 ■ お問い合わせ 不具合・要望は [email protected] まで
■ The problem this solves - Dark scenes in gameplay streams you just can't see - Movie and TV scenes too dark to make out the details - Crushed shadows in horror-game streams — you can't tell what's happening - Turning up your monitor only makes everything else glaring ■ What Video Brightener does - Uses gamma correction to lift only the dark areas - Built-in contrast adjustment prevents a washed-out look - Independent sliders for brightness and contrast - Four one-click presets (Low / Medium / Strong / Max) - Works in fullscreen, where many similar extensions fail - Works on DRM-protected streaming ■ Privacy - No communication with external servers, ever - Never reads the pixel data of your video - Stores only three settings: on/off, brightness, contrast - No analytics, no tracking ■ Limitations - Filters do not apply in Picture-in-Picture mode (a platform limitation) - On some hardware-acceleration setups the filter may not take effect ■ How it works (for the technically curious) A two-stage SVG filter (feComponentTransfer): gamma correction plus linear contrast. It runs on the GPU compositing path, so even 4K60fps video adds virtually no load. It never draws video frames to a canvas, so it works under Widevine and other DRM. ■ Contact Bugs and requests: [email protected]
- May 20, 2026short_description
動画の暗くて見えにくいシーンを明るく補正します。フルスクリーン対応、DRM配信対応、外部通信なし。
Brightens dark, hard-to-see scenes in videos. Works in fullscreen and on DRM-protected streaming, with zero external communication.
- May 20, 2026name
Video Brightener - 動画の暗いシーンを明るく
Video Brightener — Brighten Dark Video Scenes
- May 20, 2026host_permissions
https://www.youtube.com/*, https://www.youtube-nocookie.com/*, https://www.twitch.tv/*, https://*.nicovideo.jp/*, https://vimeo.com/*, https://player.vimeo.com/*, https://video.unext.jp/*, https://*.abema.tv/*
https://www.youtube.com/*, https://www.youtube-nocookie.com/*, https://www.twitch.tv/*, https://*.nicovideo.jp/*, https://vimeo.com/*, https://player.vimeo.com/*, https://video.unext.jp/*, https://*.abema.tv/*, https://*.netflix.com/*, https://*.disneyplus.com/*, https://*.primevideo.com/*, https://www.amazon.co.jp/*, https://www.amazon.com/*, https://*.hulu.com/*, https://*.hulu.jp/*, https://*.max.com/*
Permissions & access
- Permissions
- storage
- Host access
- https://www.youtube.com/*, https://www.youtube-nocookie.com/*, https://www.twitch.tv/*, https://*.nicovideo.jp/*, https://vimeo.com/*, https://player.vimeo.com/*, https://video.unext.jp/*, https://*.abema.tv/*, https://*.netflix.com/*, https://*.disneyplus.com/*, https://*.primevideo.com/*, https://www.amazon.co.jp/*, https://www.amazon.com/*, https://*.hulu.com/*, https://*.hulu.jp/*, https://*.max.com/*
Screenshots
About
■ The problem this solves - Dark scenes in gameplay streams you just can't see - Movie and TV scenes too dark to make out the details - Crushed shadows in horror-game streams — you can't tell what's happening - Turning up your monitor only makes everything else glaring ■ What Video Brightener does - Uses gamma correction to lift only the dark areas - Built-in contrast adjustment prevents a washed-out look - Independent sliders for brightness and contrast - Four one-click presets (Low / Medium / Strong / Max) - Works in fullscreen, where many similar extensions fail - Works on DRM-protected streaming ■ Privacy - No communication with external servers, ever - Never reads the pixel data of your video - Stores only three settings: on/off, brightness, contrast - No analytics, no tracking ■ Limitations - Filters do not apply in Picture-in-Picture mode (a platform limitation) - On some hardware-acceleration setups the filter may not take effect ■ How it works (for the technically curious) A two-stage SVG filter (feComponentTransfer): gamma correction plus linear contrast. It runs on the GPU compositing path, so even 4K60fps video adds virtually no load. It never draws video frames to a canvas, so it works under Widevine and other DRM. ■ Contact Bugs and requests: [email protected]
Technical
- Version
- 0.4.0
- Manifest
- V3
- Size
- 19.82KiB
- Min Chrome
- 88
- Languages
- 2
- Featured
- No
Metadata
- ID
- fgnimlbknladhkjjncailiolinldipgg
- Developer ID
- u3ddb53ff6f816cb996e165005c62a2fa
- Developer Email
- [email protected]
- Created
- May 13, 2026
- Last Updated (Store)
- May 15, 2026
- Last Scraped
- Jun 8, 2026
- Website
- —
- Support URL
- —
- Privacy Policy
- —
Data sourced from the Chrome Web Store · last verified Jun 8, 2026.