ParallelCue 双语字幕

同时显示两种语言的 YouTube 字幕，并支持自定义样式。

ParallelCue makes YouTube subtitles easier to follow in two languages at once. It displays the original caption and a YouTube-provided translation in one synchronized overlay. Switch between bilingual, original-only, and translated-only modes, then customize each line with installed system fonts, text size, color, background, outline, opacity, spacing, order, and position. Settings sync through Chrome. ParallelCue has no analytics, ads, tracking, crash reporting, or developer-operated backend. Caption processing happens in the current YouTube page, and translation requests remain on YouTube.