Convert PDF documents to AI-generated podcasts with Google Gemini and Text-to-Speech

Transform any PDF document into an engaging, natural-sounding podcast using Google's Gemini AI and advanced Text-to-Speech technology. This automated workflow extracts text content, generates conversational scripts, and produces high-quality audio files.

Who is this for?

This workflow template is perfect for content creators, educators, researchers, and marketing professionals who want to repurpose written content into audio format. Ideal for creating podcast episodes, educational content, or making documents more accessible.

What problem does this solve?

Converting written documents to engaging audio content manually is time-consuming and requires scriptwriting skills. This workflow automates the entire process, turning static PDFs into dynamic, conversational podcasts that sound natural and engaging.

What this workflow does

1. Extracts text from uploaded PDF documents
2. Generates podcast script using Google Gemini AI with conversational tone
3. Converts script to speech using Google's advanced TTS with customizable voices
4. Processes audio into properly formatted WAV files
5. Saves final podcast ready for distribution

Setup

1. Obtain API credentials:

   • Get Google Gemini API key from AI Studio
   • Configure credentials in n8n as "Google Gemini(PaLM) Api account"

2. Configure voice settings:

   • Choose from available voices: Kore (professional), Aoede (conversational), Laomedeia (energetic)
   • Customize script generation prompts if needed

3. Test the workflow:

   • Upload a sample PDF file
   • Verify audio output quality
   • Adjust voice settings as preferred

How to customize this workflow

• Modify script style: Edit the prompt in the "Generate Podcast Script" node to change tone, length, or format
• Change voice: Update the voice name in "Prepare TTS Request" node
• Add preprocessing: Insert text cleaning nodes before script generation
• Integrate with storage: Connect to Google Drive, Dropbox, or other storage services
• Add notifications: Include Slack or email notifications when podcasts are ready

Note: This template requires Google Gemini API access and works best with text-based PDF files under 10MB.