How to turn a document into a podcast with AI

By the end of this guide you will have turned a document, such as a PDF, a blog post or a set of notes, into an audio episode you can listen to or publish. The job is done by one of two kinds of AI tool: one that generates a spoken overview or multi-voice script from your sources, or a text-to-speech tool that reads your text aloud.

If you want to turn a document into a podcast with AI, the first decision is whether you want a conversation about the material or a straight narration of it. This guide walks through both routes and compares five tools from our Audio and voice category.

Key takeaways

• Pick the source, choose a format (overview, multi-speaker script or plain narration), generate the audio, then listen all the way through and fix what is wrong.
• The main decision is conversation versus narration: Gemini Notebook and ZenMic create overviews or scripts, while Audify AI, Hume AI and Glassia turn text you have already written into speech.
• ZenMic lets you edit every script line before audio is made. Check the script, because generated summaries can drop or distort detail.
• Free options exist, but they are limited: Gemini Notebook's free plan allows up to 50 sources per notebook, and ZenMic's free tier has limited generations per month.

What you need before you start

• A source document. PDF, Word file, web page, blog URL or pasted notes. ZenMic lists text, PDF, images, HTML, DOCX, RSS feeds and blog URLs as inputs.
• The right to use it. Only turn material into audio if you own it or have permission to publish an adaptation.
• An account with your chosen tool. Audify AI also offers three free conversions, or free use with your own OpenAI API key.
• Time. A short episode takes under an hour from upload to export, including listening back.
• Difficulty. Easy for the notebook and studio tools, moderate if you use an API.
• Headphones. You will check pronunciation and pacing by ear.

Which kind of AI tool fits this job

Choose by what the listener should hear.

A source-grounded notebook, for an overview you did not write. Gemini Notebook is Google's AI notebook, renamed from NotebookLM on July 16, 2026. You add sources such as documents, slides, PDFs, web pages, YouTube links or audio, and it can turn that material into Audio Overviews as well as answering questions with citations. Use it when you want a listenable summary of a stack of reading.

A text-to-podcast studio, for a script with several voices. ZenMic takes a topic, notes or an attached file, and you pick a template, length, voices and language. The AI writes a script and casts a voice for each speaker. Every line stays editable before audio is generated, and each show gets a podcast RSS feed that can be submitted to Spotify and Apple Podcasts.

A text-to-speech converter, for a straight reading of text you have already written. Audify AI is a web tool built on OpenAI speech models. You paste text, choose a model and voice, set the reading speed and download MP3 or WAV. It converts one block of text at a time and has no project or script editor.

Voice platforms for more control. Hume AI is for developers who want to direct tone, pacing and emphasis in generated speech through an API. Glassia offers text-to-speech with a library of voices across 23+ languages, voice cloning and dubbing. These suit a series with a consistent voice or episodes in several languages.

Step 1: Choose and prepare the source

Good audio starts with a document that makes sense when heard.

1. Pick the document and decide the single point of the episode.
2. Remove parts that do not work in audio: tables, long reference lists, figures and footnotes.
3. If the file is a PDF, make sure the text is selectable. A scan may not read properly.
4. Write down names, acronyms and numbers you expect the voices to say, so you can check them later.

Check it worked by reading the first paragraph aloud. If it sounds awkward, rewrite it before uploading.

Step 2: Decide on a format

You end this step knowing whether you want an overview, a scripted conversation or a narration.

1. For a conversational summary of one or several sources, use Gemini Notebook's Audio Overview.
2. For a scripted show with named speakers, use ZenMic and pick a template such as Podcast.
3. For a faithful reading of your own text, use a text-to-speech tool such as Audify AI or Glassia.
4. If you need word-level timestamps or want to direct emotion by instruction, look at Hume AI's text-to-speech API.

Check it worked by writing one sentence about who the listener is and what they should take away.

Step 3: Add the document and set the options

The goal is an input the tool can use and settings that match your listener.

1. Create a notebook or project, then add your source. In Gemini Notebook that means adding it as a source. In ZenMic you attach a file or paste notes.
2. In ZenMic, choose the template, length, voices and language. The listing mentions 30+ voices and 100+ languages.
3. In a text-to-speech tool, choose a model, a voice and a reading speed. Audify AI lets you set speed anywhere from 0.25x to 4x.
4. Check the length limits. Gemini Notebook's listing says each source can contain up to 500,000 words or 200 MB per uploaded file.

Check it worked by seeing your source listed in the project before you generate anything.

Step 4: Review the script or summary

Before you make audio, read what the AI will say.

1. In ZenMic, read the script line by line. You can change who says each line, the delivery style and tags for laughs, sighs or pauses.
2. In Gemini Notebook, ask questions in chat about your sources and compare the answers with the document, since answers come with citations back to the sources.
3. Cut sections that repeat the document without adding anything for a listener.
4. Fix any claim that does not match the original. This matters most for legal, medical, financial or academic material.

Check it worked by comparing three or four facts in the script against the source.

Step 5: Generate the audio

Now produce the episode.

1. Start generation. ZenMic's listing says audio is generated in about a minute, and it can be downloaded as an MP3.
2. In Gemini Notebook, generate the Audio Overview from the notebook's sources.
3. In a text-to-speech tool, paste or upload the final text. Audify AI shows a counter for characters, estimated tokens and cost before you generate.
4. Keep the first version as a draft. Do not publish until you have listened to it.

Check it worked by playing the first minute and confirming the voices, language and pace are what you chose.

Step 6: Listen and fix problems

You are checking the audio against the document, not just for sound quality.

1. Listen to the whole episode once with the document open.
2. Note mispronounced names, odd pauses, skipped words and anything that changes the meaning. Audify AI says it gives no guarantee against misspellings, skipped words or odd pauses.
3. Fix the text or script and regenerate the affected section.
4. If a voice sounds wrong for your content, try another voice or a different speed.

Check it worked by listening to the corrected sections again from start to finish.

Step 7: Export and publish

Save the file and decide where it goes.

1. Download the MP3 or WAV. ZenMic provides an MP3 for every episode. Audify AI downloads MP3, WAV and other audio formats.
2. If you want a show people can subscribe to, use ZenMic's auto-generated RSS feed, which can be submitted to Spotify and Apple Podcasts, or upload the file to your own podcast host.
3. Add a line in the show notes saying the episode was produced with AI voices.
4. Keep the source document and your final script together for future edits.

Check it worked by playing the published episode from the public link.

Tools for this job compared

Tool	Good fit for	Pricing	Stated limits
Gemini Notebook	Audio overviews of sources you upload, on the web	Freemium	Free plan allows up to 50 sources per notebook; usage limits refresh every 5 hours up to a weekly cap
ZenMic	Multi-speaker scripts and a podcast RSS feed, on web and API	Freemium, paid from $19/mo (checked 24 Oct 2026)	Free tier has limited generations per month; episode length depends on input and plan
Audify AI	Reading one block of text aloud, on the web	Freemium, paid from $0.01, usage-based (checked 24 Oct 2026)	No project or script editor; converts one block of text at a time; no guarantee against skipped words
Hume AI	Directing tone and pacing through an API	Freemium	Free and Starter plans are non-commercial; Octave 1 supports only English and Spanish
Glassia	Narration and dubbing across 23+ languages	Freemium, paid from £4.99/mo (checked 24 Oct 2026)	Free plan gives 10 minutes of speech generation; you need consent to clone a voice

Prices and plan limits change, so confirm the current terms on each vendor's site before you subscribe.

Common mistakes to avoid

• Publishing without checking the script. A generated summary can leave out a caveat or change a claim. Fix it by reading the script or comparing the audio with the document before release.
• Feeding in a document that was written for the eye. Tables, footnotes and figure references are awkward to hear. Fix it by trimming and rewording before you generate.
• Using material you do not have the rights to. Turning someone else's article into a published episode can breach their copyright. Fix it by using your own work or getting permission.
• Cloning a voice without consent. Glassia states that you must have consent to clone a voice. Fix it by using a stock voice or getting written agreement from the speaker.
• Ignoring the licence on a free plan. Hume AI's Free and Starter plans are limited to non-commercial use. Fix it by checking the plan terms before you monetise the episode.

How we put this together

This is an evidence-based guide built from each tool's listing in our directory, which is compiled from the vendor's own site and pricing page. It is not a review based on using the tools. We don't rank tools, and nobody paid to be included. Some outbound links may be affiliate links; see our disclosure.

Frequently asked questions

Can I turn a document into a podcast with AI for free?

Yes, within limits. Gemini Notebook has a free plan for personal projects with up to 50 sources per notebook, ZenMic has a free tier with limited generations a month, and Audify AI offers three free conversions or free use with your own OpenAI API key. Paid plans lift the caps.

Does the AI read the document word for word?

It depends on the tool. A text-to-speech converter such as Audify AI reads the text you give it. Overview tools such as Gemini Notebook and script tools such as ZenMic turn your material into a summary or a conversation, so they will not reproduce every line.

How long does it take to make an episode?

Generation itself is quick: ZenMic's listing says audio is generated in about a minute. Preparing the document and listening back are what take time.

Can I publish the episode on Spotify or Apple Podcasts?

You can if the tool's licence allows it and you own the material. ZenMic gives each show an RSS feed that can be submitted to Spotify and Apple Podcasts. For other tools, download the file and upload it to a podcast host, after checking the plan allows commercial use.

Is my document kept private?

Each vendor handles this differently. Audify AI's terms say inputs and outputs are not stored, and Google states that organization and school data is not used to train Gemini Notebook. Read each vendor's data terms before uploading confidential files.

Compare more options in our Audio and voice category. If you want to record your own voice instead, see How to clone your own voice with AI.