vCaptions – Video Caption List Firefox

vCaptions – Video Caption List

Add smart captions lists to any website video. Supports YouTube and Bilibili with translation, chapters and AI summaries.

Features & Capabilities

vCaptions is the ultimate AI video assistant and subtitle translator. It transforms how you watch online videos by generating interactive transcripts, providing AI-powered summaries, and enabling dual-language subtitles for effective learning.

Whether you are a researcher, a student learning a new language, or just want to save time, vCaptions helps you digest video content 10x faster on YouTube, Bilibili, and any website with HTML5 video.

⭐ Key Features

  • Interactive Video Transcript: View the full subtitle list alongside playback. Click any caption line to instantly jump to that specific timestamp.
  • AI Summary & Chat (ChatGPT powered): Don't have time to watch the whole video? Get instant video summaries, key takeaways, and ask the AI questions about the content directly.
  • Dual Subtitles & Translation: Break language barriers with real-time subtitle translation. Enable dual captions (native + translated) for seamless language learning and comparison.
  • Smart Chapter Extraction: Automatically detect topics and generate video chapters for easy navigation, even if the creator didn't add them.
  • Subtitle Downloader: Easily copy captions to your clipboard or export subtitles as .SRT, .VTT, or .TXT files for offline use.
  • Flexible Layouts: Choose your preferred viewing mode — Sidebar, Floating Window (Picture-in-Picture style), or Embedded mode. The floating panel is fully resizable and draggable.
  • Customizable UI: Full Dark Mode support and font size adjustments for comfortable reading.

🎯 Optimized for Major Platforms

  • YouTube: Best-in-class support for YouTube videos, embedded players.
  • Bilibili: Optimized experience for Bilibili videos.

🚀 Use Cases

  • For Language Learners: Watch videos with bilingual subtitles to improve listening and vocabulary.
  • For Content Creators: Quickly download transcripts to repurpose video content into blog posts.
  • For Professionals: Use AI summarization to quickly grasp the main points of long webinars or tutorials.

❓ FAQ Q: Can I download YouTube subtitles with this extension? A: Yes! You can export captions in .srt or .vtt formats with one click.

Q: Does it support translation? A: Yes, vCaptions provides translation to convert subtitles into your preferred language.

User Growth & Download Statistics

Manifest V2 Add-on
By:
vCaptions
Daily users:
42 4
Version:
2.4.1 Last updated: 2026-05-12
Version code:
6182480
Creation date:
2026-02-08
Risk:
High risk impact High risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
  • localhost
  • *.vcaptions.com
Size:
7.82MB
Email:
vc*****@gmail.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-07-14
Compare stats and ranking:

Other platforms

Chrome
vCaptions – Video Caption List (v2.4.6)
30,000 4.64 (218)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
vCaptions
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/vcaptions-video-caption-list/
Email:
vc*****@gmail.com
Website:
https://www.vcaptions.com

Is vCaptions – Video Caption List Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

vCaptions – Video Caption List requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • Low ******* ****** ** *** ********* ******** ********** *************
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

vCaptions – Video Caption List may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
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