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subtitle.im
A desktop Chrome extension that controls YouTube captions automatically and detects burned-in subtitles to avoid duplicates.
Visit Official Website
https://subtitle.im
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What It Does
subtitle.im solves a narrow but constant problem for people who watch YouTube with captions. It manages the existing caption track in desktop Chrome — follow YouTube's own choice, auto-open captions, or auto-close them — so you are not clicking CC on every video.
The second half is the part other extensions skip: it detects burned-in subtitles locally, and when the hardcoded subtitles and YouTube's caption track are in different languages you choose what happens — close the duplicates automatically, be asked first, or keep the captions. A manual CC/C press always wins for that viewing, and the site is explicit that burned-in text itself remains on screen because it is part of the video.
Preferences apply in a hierarchy from a global default down through a channel rule to a single video rule, with channel and video rules reserved for the paid tier, and confirmed closes remembered. The site states that caption handling happens locally so you can watch with confidence, publishes an installation guide, a help center and a blog, offers eight interface languages, and provides a license page with a refund policy.
Key Features
- Follow YouTube, auto-open, or auto-close the caption track
- Local detection of burned-in subtitles
- Duplicate handling: close automatically, ask first, or keep captions
- Preference hierarchy from global to channel to single video
- Remembers confirmed closes; a manual CC/C press always wins
- Eight interface languages with an installation guide and help center
Who It Is For
People who watch YouTube with captions on desktop Chrome, including viewers of foreign-language video with hardcoded subtitles.
Key Use Cases
Keeping captions on for every video without pressing CC; avoiding a duplicate caption track over burned-in subtitles; handling a foreign burned-in subtitle and an English caption track at once; setting a per-channel caption rule.
Pricing and Access
Pricing
Freemium
Plans
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Free | $0 | free | — |
| Pro | $17.99 | per year | Annual subscription |
| Pro Lifetime | $29.99 | one-time | — |
Plan details are shown as published; taxes and regional pricing may differ.
Access
Installed into desktop Chrome, with an installation guide linked from the site. Channel and video-level rules are marked as requiring Pro; the site lists plans, a license page and a refund policy.
Pricing and availability last checked: Oct 24, 2026 · Source: official website
Privacy and Data Handling
The site states that captions are handled locally, so subtitle detection runs on your machine rather than being uploaded.
Strengths and Limitations
Strengths
Burned-in subtitle detection with a language-mismatch rule is a specific problem nobody else handles, and local processing keeps it private.
Limitations
Desktop Chrome only, and per-channel or per-video rules need the paid tier.
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