Safariで動画速度を変更：時間と再生速度をマスターする

Easily control the playback speed of HTML5 videos and audio across websites in Safari. This Safari extension offers quick controls, rich customization options, and convenient keyboard shortcuts. Key Features: • Quick Popup Controls – Adjust speed instantly with a slider, plus +/- buttons and customizable preset buttons. • Precision Slider – Define your own minimum, maximum, and step values for fine-tuned control (0.1x–16x). • Initial Speed Options – Choose to automatically apply the last used speed, a custom default speed, or start at normal speed. • Keyboard Shortcuts (macOS only) – Assign custom keys to increase or decrease speed by a chosen amount, or jump directly to a specific speed. Both the speed values and key bindings are fully customizable. Limitations: • Works only with HTML5 media. • Some websites may block speed control or restrict playback speeds (e.g., limit to 2x). • Embedded videos may require opening the original source page. • Due to the wide variety of websites, compatibility with every site cannot be guaranteed. If needed, you can contact us to check whether this extension works on a specific site before installing. For feature requests, questions, or bug reports, please visit our support page: https://www.wide-apps.com