Generate improved, translated subtitles for YouTube videos using AI
Users
35
+4 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#124K
#104K among extensions
Version
1.0.2
updated 13 Mar 2026
Users
monthly, 8 months
Latest, 20 Oct 2026:35 usersMove the mouse over the chart for any month
Ratings count
monthly, 8 months
Latest, 20 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About YouTube Perfect Subtitles - Improve Youtube Subtitles & Translation with AI
Transform your YouTube viewing experience with AI-generated, professional subtitles in any language, no matter if it is subtitles for the same spoken language or translation. Perfect for language learners, international content consumers, and anyone who wants crystal-clear, accurate subtitles.
🌟 Key Features
AI-Powered Translation
-------------------------------------
Translate YouTube subtitles into 19+ languages including English, Spanish, French, German, Italian, Portuguese, Russian, Japanese, Korean, Chinese, Arabic, Hindi, Turkish, Dutch, Polish, Swedish, Norwegian, Danish, and Finnish
Context-aware translation that preserves meaning, tone, and cultural nuances
Natural, fluent output - not robotic word-for-word translations
Goes beyond YouTube's auto-translate with superior accuracy and readability
Advanced Subtitle Controls
-------------------------------------------
-Adjustable font size (14-50px) for comfortable reading at any distance.
-Customizable background transparency (0-100%) for perfect visibility.
-Flexible vertical positioning (0-100%) to place subtitles anywhere on screen.
-Subtitle delay adjustment (unlimited range) to sync perfectly with audio.
-Draggable subtitles - manually position anywhere on the video player.
-Show/hide toggle to remove subtitles when not needed.
Professional Features
-----------------------------------
-Download subtitles as .SRT files for use in video editors or other players.
-Romaji support for Japanese learners (shows both English translation and romanized Japanese).
-Per-video settings - delay preferences saved individually for each video.
-Clean, non-intrusive overlay that doesn't block video content.
💡 How It Works
-Click the extension icon in the browser.
-Install & Sign In - Quick Google authentication, no complex setup.
-Click the extension icon again.
-If you do not have a subscription yet, select one of our plan (Basic for 4,000 tokens/month or Pro for 27,000 tokens/month.)
-When you are subscribed to one of our plan, click the extension icon again.
-Select Your Language - Choose from 19+ supported languages.
-Watch Any YouTube Video - Extension activates automatically.
-AI Processes Subtitles - Advanced AI translates and enhances the original transcript.
-Enjoy Perfect Subtitles - High-quality, synchronized subtitles appear on screen.
🎯 Perfect For
-Language Learners - Watch content in target language with native language subtitles, or use Romaji mode. (Perfect to learn Japanese.)
-International Audiences - Access content in any language with accurate translations.
-Accessibility - Improved subtitle quality for hard-of-hearing viewers.
-Content Creators - Download SRT files for video editing projects.
-Researchers & Students - Translate educational content for better comprehension.
🚀 Subscription Plans
Basic Plan - $7.99/month
----------------------------------------
-4,000 tokens per month
-Full feature access
-Premium AI translation
Pro Plan - $49.99/month
----------------------------------------
-27,000 tokens per month
-Unlimited features
-Premium AI translation
-Priority processing
Note: Tokens are based on video length and complexity. Shorter videos use fewer tokens.
🔒 Privacy & Security
-Secure Google OAuth - Your credentials are never stored
-Server-side processing - All AI operations happen on secure servers
-No data collection - We do not track your viewing habits
-Stripe payment processing - Industry-standard security for subscriptions
📖 Usage Tips
Optimal Settings:
---------------------------
-Font size: 38-42px for most screens.
-Transparency: 20-40% for best visibility.
-Position: 10-15% from bottom to avoid player controls.
Troubleshooting:
---------------------------
-If subtitles appear late/early, use the delay slider to sync.
-For long videos, processing may take 1-3 minutes.
-Refresh the page if extension doesn't activate automatically.
Language Learning:
-------------------------------
-Enable Romaji mode for Japanese videos (shows pronunciation.) Probably the best way to learn oral Japanese.
-Use larger font sizes when learning new scripts.
-Download SRT files to review offline.
🆕 Recent Updates
✅ Romaji support for Japanese learners
✅ Unlimited subtitle delay adjustment
✅ Per-video delay memory
✅ Improved subtitle duration calculations
✅ Enhanced drag-and-drop positioning
✅ SRT download functionality
✅ Vertical position slider
✅ Word-count based display timing
⚙️ Technical Details
-AI Model: Advanced language models for accurate translation
-Supported Video Types: Any YouTube video with available transcripts
-Browser Compatibility: Chrome, Edge, and other Chromium-based browsers
-Processing Speed: 10-30 seconds for short videos, 1-3 minutes for long videos
-Subtitle Format: WebVTT display, SRT download
🌐 Supported Languages
Translation To:
English, Spanish (Español), French (Français), German (Deutsch), Italian (Italiano), Portuguese (Português), Russian (Русский), Japanese (日本語), Korean (한국어), Chinese (中文), Arabic (العربية), Hindi (हिन्दी), Turkish (Türkçe), Dutch (Nederlands), Polish (Polski), Swedish (Svenska), Norwegian (Norsk), Danish (Dansk), Finnish (Suomi)
Translation From:
-Automatically detects source language from YouTube's original transcript.
-If the subtitles are from the same language than the audio, it will simply improve the text to make it clear and comprehensible.
🎓 Use Cases
Education:
-----------------
-Translate lectures from international universities.
-Access MIT OpenCourseWare in your language.
-Study foreign language content with dual subtitles.
Entertainment:
-----------------------
-Watch anime with accurate translations.
-Enjoy international films and series.
-Follow global YouTube creators, and understand exactly what they are saying.
Professional:
---------------------
-Translate business presentations.
-Access international conference talks.
-Learn from global experts in any field.
Language Learning:
-------------------------------
-Immersive learn…
Growth
Window
Users
Change
Ratings
Rating
7 days
+5
+16.7%
0
0.00
30 days
+4
+12.9%
0
0.00
6 months
+19
+118.8%
0
0.00
Chrome Web Store search rankings
Where YouTube Perfect Subtitles - Improve Youtube Subtitles & Translation with AI appears when people search the store, with the 30 day change