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Podstr — AI Subtitle Translation

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Overview

No subtitles in your language? The extension translates them in real time — with context, not line by line.

Podstr translates video subtitles to any language using AI models - Claude, Gemini, DeepSeek and others. Works directly in your browser, no server needed, no account required. HOW IT WORKS 1. Install the extension 2. Open a video with subtitles in your browser 3. A language picker appears above the video - choose your language 4. Subtitles appear over the video while you watch WHERE IT WORKS Podstr works with players that expose subtitle tracks in standard formats: - HLS streams (.vtt segments in .m3u8): ARTE, Filmzie, Plex and more - TTML via player API: Netflix, BBC iPlayer and more - Direct .srt files: RaiPlay and more - Native HTML5 <track> elements: RTS Planeta, Vimeo, YouTube and more We don't guarantee any specific platform. Streaming sites update their players, formats and APIs often, and something that worked last month may stop working tomorrow. We try to keep up. If Podstr doesn't work on a player you'd like to use - or stops working somewhere it used to - email us at hello@podstr.cc. FEATURES Translation: - 30 target languages - Multiple AI models - free models available, paid models from ~$0.005 per episode - Translation cost shown after each translation - Auto-retry for lines the model skipped Cache: - Local cache - translated subtitles load instantly on repeat viewing - Shared cache - if someone already translated an episode, you get it free - Works offline after first translation While watching: - Progress bar while translation runs in background - Keyboard shortcut (B) - toggle subtitles on/off - Adjust size, color, background, position YOUR API KEY, YOUR CONTROL Podstr uses the OpenRouter API. You bring your own key - it stays on your device, never leaves your browser. Typical cost: $0.005-0.05 per episode depending on the model. Get a free API key at openrouter.ai/keys PRIVACY - API key stored locally - never synced or sent to any server - No tracking, no analytics, no ads - Subtitle text sent only to the AI provider you choose - Open source: github.com/aveleazer/podstr PERMISSIONS - "Read and change all your data on all websites" - needed to read subtitle streams from video CDNs and show the overlay - "activeTab" - needed to detect the current page and activate the picker 13 interface languages: English, Russian, Ukrainian, Belarusian, Serbian, Spanish, French, German, Portuguese, Chinese, Japanese, Korean, Turkish. Website: podstr.cc Support: hello@podstr.cc

Details

  • Version
    0.8.0
  • Updated
    May 20, 2026
  • Size
    183KiB
  • Languages
    12 languages
  • Developer
    Email
    hello@podstr.cc
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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