Use the YouTube Transcript Summarizer to convert video transcripts into concise summaries with customizable lengths for effective content consumption.


YouTube Transcript Summarizer – DecodeTool.com

YouTube Transcript Summarizer

Extract transcripts and generate AI-powered summaries

Free API Required: Uses Gemini API (free from Google AI Studio). Get your free key here — no credit card needed.
Paste any YouTube video URL
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Transcript

0 words

AI Summary

0 words

💡 How it works: Enter a YouTube URL and your free Gemini API key. The tool extracts the video transcript and uses AI to generate a concise summary. No data is stored — everything is processed locally in your browser.

🔑 Get your free Gemini API key: Visit Google AI Studio, sign in with your Google account, and click “Create API Key”. It’s completely free with generous usage limits.


How It Works ?

📹 1. Enter YouTube URL

Paste any YouTube video URL into the input field. The tool automatically extracts the video ID.

🔑 2. Add Your Free Gemini API Key

  • Get your free API key from Google AI Studio
  • Sign in with your Google account
  • Click “Create API Key” – no credit card required
  • Paste the key into the tool (it’s stored locally in your browser)

🎯 3. Choose Summary Length

Select from:

  • Short – 1-2 sentences
  • Medium – One paragraph
  • Long – 2-3 paragraphs
  • Detailed – Comprehensive summary

🚀 4. Click “Summarize Video”

The tool will:

  1. Extract the video transcript (using free, public APIs)
  2. Send the transcript to Gemini AI for summarization
  3. Display both the transcript and AI-generated summary

Features

FeatureDescription
Free Transcript ExtractionUses public APIs – no key needed for this step
AI SummarizationPowered by Google’s Gemini AI (free with API key)
Multiple Summary LengthsShort, Medium, Long, and Detailed options
Transcript DisplayShows the full video transcript with word count
Copy FunctionsCopy transcript or summary with one click
Download SummarySave the summary as a .txt file
Progress TrackingVisual progress bar during processing
Local StorageYour API key is stored securely in your browser
Keyboard ShortcutCtrl+Enter to summarize

Free API Details: Transcript Extraction (100% Free)

AI Summarization (Gemini – Free)

  • Get your free key: Google AI Studio
  • Free tier: 1,500 requests per day
  • No credit card required – completely free

Privacy Note

  • Your API key is stored only in your browser’s localStorage
  • No data is stored on any server
  • All processing happens directly between your browser and the Gemini API
  • Your transcript is never saved or shared

Use Cases

  • Students – Quickly understand video lecture content
  • Researchers – Summarize long presentations and talks
  • Content Creators – Get key points from competitor videos
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