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subtitle.im vs Keyword Cluster

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

subtitle.im compared with Keyword Cluster
Detailsubtitle.im logo subtitle.imKeyword Cluster logo Keyword Cluster
What it doesYouTube captions, on when needed, off when they get in the way. Chrome extension for keyword clusters and SEO insights
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Free
PricingFree: $0, no sign-up needed, 10 successfully handled videos in total with no monthly reset. Pro subscription: $17.99 / year, billed annually. Pro Lifetime: $29.99 / once, pay once for ongoing maintenance and all major and minor updates. Not given
Key features
  • Automatic caption control - follow YouTube, auto-open, or auto-close
  • Local OCR detects burned-in subtitles
  • Handle duplicate captions with separate settings
  • Manage different languages in captions
  • Channel-specific caption rules (Pro)
  • Video-specific rules (Pro)
  • Remember confirmed caption closures (Pro)
  • Restore captions if hidden by mistake
  • Privacy-first local processing
  • Keyword clustering by search intent
  • Long-tail keyword discovery
  • AI-powered keyword grouping
  • Real-time insights on Google and Bing
  • Topic cluster identification
  • Related search query suggestions
  • No account or login required
  • Support for Google, Bing, and YouTube
What makes it different
  • All processing happens locally in your browser with no video frames uploaded
  • Automatically detect burned-in subtitles and handle them separately from YouTube captions
  • Set caption preferences at global, channel, or video level
  • Free to try with 10 videos before upgrading
  • No email or account required for free use
  • Shows keyword clusters directly in search results without leaving Google or Bing
  • Completely free with no account needed
  • Eliminates need to switch between multiple SEO tools
  • Groups keywords by search intent for better content alignment
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)21 no change since last check11 no change since last check
Trust Flow (Majestic)153
Citation Flow (Majestic)2423
Referring domains (Majestic)3650

4 details filled in for both companies.

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