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Youtube Optimizer vs subtitle.im

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

Youtube Optimizer compared with subtitle.im
Detail Youtube Optimizersubtitle.im logo subtitle.im
What it doesAI Chrome extension that optimizes YouTube titles, descriptions and tags inside YouTube Studio YouTube captions, on when needed, off when they get in the way.
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingFree: 1 AI optimization per day. Pro: $25 one-time lifetime payment. Free: $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.
Key features
  • Review changes before saving
  • 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
What makes it different
  • One-time $25 lifetime payment instead of subscription
  • Works directly inside YouTube Studio
  • Free tools and guides that don't use the daily optimization limit
  • 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
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)49 +1 (up) since last check21 no change since last check
Trust Flow (Majestic)1115
Citation Flow (Majestic)1724
Referring domains (Majestic)8936

5 details filled in for both companies.

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