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Documentation Index

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Overview

The free online subtitle translator lets you upload an SRT, VTT, or ASS subtitle file and translate it into 15+ languages while preserving all timecodes. Supports Chinese, English, Japanese, Korean, Spanish, French, German, and more. The AI considers context across lines rather than translating word-by-word, producing natural, fluent subtitles ready to use.

Pain Point

Launching a video internationally or producing bilingual study subtitles usually means either hand-translating line by line, or using auto-translators that break context and corrupt timing. This tool delivers a one-click translation while keeping every timestamp intact — saving hours from localization to release.

Key Features

  • Supports SRT (SubRip), VTT (WebVTT), ASS/SSA, and plain TXT subtitle formats
  • AI translation into 15+ languages: zh / en / ja / ko / es / fr / de / pt / ru / ar / hi / th / vi / id / tr
  • Preserves all timecodes and formatting
  • Context-aware translation — not literal word-for-word
  • Free to use, no sign-up required

Highlights

Upload, pick a target language, download the translated file — three steps, timestamps untouched. The AI reads surrounding lines for context, producing more natural output for dialogues, technical terms, and slang compared to basic translators. Ideal for batch-translating long videos.

Use Cases

  • Video localization: Translate subtitles for YouTube, Bilibili, and TikTok videos to reach global audiences
  • Language learning: Create bilingual subtitles or translate foreign films to learn vocabulary in context
  • Content creators: Provide multilingual subtitles for every video and grow a global audience
  • Course translation: Translate English lectures and online courses into your native language to lower learning barriers
  • Team collaboration: Share translated subtitles of meetings and product demos with multilingual teams

Tips

  • Use BibiGPT’s subtitle downloader to extract subtitles from videos first, then translate with this tool
  • After translation, pair with the subtitle burner to hardcode the translated text into your video
  • For subtitles with brand names or specialized terms, skim the output and fine-tune a few lines if needed

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