subtitle.im vs Key Changer

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 Key Changer
Detail	subtitle.im	Key Changer
What it does	YouTube captions, on when needed, off when they get in the way.	Change the key of audio in your Chrome tab while keeping vocals natural
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Free
Pricing	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.	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	Pitch shift from −12 to +12 semitones Fine-tuning by ±50 cents Keep vocals natural mode enabled by default Preserves playback speed while changing pitch Works with YouTube, YouTube Music, Spotify Web, SoundCloud Video stays synchronized with processed audio Remembers pitch preferences for each song Keyboard shortcuts for pitch adjustment Processes audio locally with no uploads Powered by Key Changer Engine for natural pitch shifting
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	Preserves natural vocal character while shifting pitch Processes audio locally in browser, no data uploaded Works with most major streaming platforms without additional setup Video stays perfectly synchronized with pitch-shifted audio
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	32 +2 (up) since last check	2 no change since last check
Trust Flow (Majestic)	15	0
Citation Flow (Majestic)	24	12
Referring domains (Majestic)	36	2

4 details filled in for both companies.

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