YouTube transcript extension
Clean captions with timestamps, language selection, and quick copy — directly on the video page.
What it does
Summarize YouTube videos without switching tabs
Samurai Zer is a YouTube transcript extension, YouTube translator, AI summary tool, and video analysis assistant in one focused panel.
YouTube transcript translator
Translate transcript content into your language and keep the result next to the video.
AI YouTube summary
Turn long videos into concise notes, key points, and a structured explanation.
Actual extension view
Transcript beside the video, not on another website
Samurai Zer runs directly on the YouTube watch page. The Transcript tab uses caption data available for the current video, keeps timestamps, can follow playback, and can be copied without leaving YouTube.
How it works
From captions to transcript, summary, and analysis
1. Read available captions
Samurai Zer detects caption tracks that YouTube makes available for the current video and builds the Transcript view locally in the extension.
2. Keep the source visible
Timestamps and follow mode make it easy to compare transcript text with the exact moment in the video.
3. Use AI when you need it
After sign-in, translation, Summary, and Analysis use the Samurai Zer backend. Active paid plans provide unlimited AI use during the paid period.
Transcript availability: Samurai Zer relies on caption/transcript data exposed by YouTube. It does not download video or audio and does not create speech-to-text when a video has no usable caption track.
Built for focus
AI analysis for long YouTube videos
Use Samurai Zer to review strengths, weaknesses, missing context, and practical takeaways. The Transcript tab is available without registration. Paid Monthly Unlimited and Yearly Unlimited plans unlock translation, summary, and analysis with unlimited tokens during the paid period.
- Transcript available without registration
- Translate YouTube transcripts into your language
- Summarize YouTube videos in seconds
- Critical analysis for research and learning
- Unlimited paid tokens for translation, summary, and analysis
Use cases
Choose the workflow you need
YouTube Transcript Extension
Read clean captions and copy transcript text directly from YouTube.
YouTube Translator Extension
Translate transcript content while staying on the video page.
YouTube Summary Extension
Generate concise AI summaries and key takeaways from long videos.
YouTube Video Analysis
Get structured critique, strengths, weaknesses, and missing context.
Guides
Learn how YouTube transcripts and AI video tools work
Useful explanations for people searching for a transcript extractor, translator, video summarizer, or a better way to review long YouTube videos.
Transcript guide
How to get a YouTube transcript
Why some videos have transcripts, how caption tracks work, and how to extract readable text with timestamps.
Translation guideHow to translate a YouTube video transcript
Why context matters when translating subtitle fragments and how to keep translation aligned with playback.
Summary guideHow to summarize a YouTube video
A practical workflow for using transcript text to get the overview without losing the source.
ExplainerYouTube transcript vs captions vs subtitles
Understand the difference between timed caption tracks, player subtitles, and a readable transcript.
Plans
Unlimited paid plans
Transcript viewing is free without registration. Paid plans provide unlimited tokens during the paid period for translation, summary, and analysis.
Monthly Unlimited
4.99 USD / month
Unlimited tokens during the monthly period: translation, summary, and analysis included.
Yearly Unlimited
39.99 USD / year
Unlimited tokens during the yearly period: translation, summary, and analysis included.
FAQ
Questions about Samurai Zer
Is the transcript free?
Yes. The Transcript tab can be used without registration.
Can Samurai Zer translate YouTube videos?
Yes. It translates transcript content and uses translation inside the transcript, summary, and analysis workflow.
Are paid plans unlimited?
Yes. Monthly Unlimited and Yearly Unlimited include unlimited paid tokens for translation, summary, and analysis during the paid period.
Does the extension download YouTube videos?
No. Samurai Zer works with transcript text and does not download video or audio.
Why is a transcript sometimes unavailable?
Transcript availability depends on caption data exposed by YouTube. Some videos have no usable captions, and dynamic YouTube loading can also delay when caption data becomes available.
Does Samurai Zer create speech-to-text from the video audio?
No. The extension reads available transcript/caption data rather than transcribing the audio stream itself.
Contact
Questions, support, feedback
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