Compare: Dualsub - YouTube Subtitle Translator vs Lingocloud - AI Translate Web, PDF & Subtitles

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Metric	Dualsub - YouTube Subtitle Translator	Lingocloud - AI Translate Web, PDF & Subtitles
User count	100,000	100,000
Average rating	3.57	3.86
Rating count	474	511
Last updated	2026-06-30	2026-06-18
Size	0.03 MB	3.42 MB
Version	2.71.0	2.7.3

Short description	Translate and display dual subtitles on YouTube and other video sites with a lightweight standalone renderer (<40KB) that never interferes with built‑in subtitles.	Lingocloud AI translator and bilingual reader for web pages, PDFs, and video subtitles with multi-model glossaries and real-time translations.
Full summary	Dualsub - YouTube Subtitle Translator enhances your video viewing with dual subtitles translated in real time. While it was originally designed for YouTube, it now supports multiple video websites, with a full list available at https://www.dualsub.xyz/websites. It uses a standalone subtitle renderer that doesn’t touch the video website’s built‑in subtitles, staying lightweight (under 40KB) and easy to use for fast, efficient viewing.	Lingocloud combines an AI translator with a bilingual reading assistant to translate web pages, PDFs, and video content. It supports a matrix of AI models (V4, DeepSeek, GPT, Qwen, GLM4) and a glossary of 100,000+ terms, enabling precise, context-aware translations and layout-preserving document parsing. Key features include a bilingual web parallel view, text selection translation, seamless model-switching without page refresh, PDF translation with preserved formatting, and bilingual video subtitles. This extension serves researchers, students, language learners, developers, and professionals who need fast, accurate multilingual access across online content.