How to Make a Companion PDF for Your Audiobook

Some audiobooks carry information that the ear alone cannot hold. A map, a diagram, a table of numbers: these belong on a page a listener can open and study. The common fix is a companion PDF, a short document that travels with the audio and fills in what narration cannot show. This guide covers when you need one, what to put in it, how to point listeners to it from inside the narration, and how to get it into their hands.

One thing to set straight first. AudioProducer.ai turns your manuscript into a finished MP3 you download. It does not build the PDF for you, and it does not host or distribute either file to any store or app. You make the companion PDF separately with your own tools, and you attach it wherever you sell or deliver the audiobook. Everything below assumes that split: we produce the audio, you produce and deliver the PDF.

When your audiobook needs a companion PDF

Most fiction never needs one. A novel lives entirely in the voice, and a listener who has to pause and open a file has been pulled out of the story. The audiobooks that benefit are the ones where the page was doing real work in the print edition.

Watch for these signals in your manuscript:

• Figures and diagrams a listener is asked to picture, such as flowcharts, anatomy sketches, or wiring layouts.
• Maps in a fantasy world or a travel narrative, where geography keeps coming up.
• Tables and data that would sound like a wall of numbers if read aloud.
• Worksheets, checklists, or exercises in a how-to, self-help, or workbook title.
• Recipes, formulas, or step lists that a listener will want to follow later with their hands, not their ears.

This is why nonfiction leans on companion files far more than fiction does. If you are producing a nonfiction or business book audiobook or a textbook converted to audio, a companion PDF is often the difference between a title that works in audio and one that frustrates the listener.

What to put in the companion PDF

Keep the document lean. It exists to carry what the audio cannot, so anything that reads fine as narration should stay out of it. A companion PDF is not a copy of your book.

A useful structure looks like this:

• A short cover page with the book title, your author name, and a one-line note that this file accompanies the audiobook.
• A contents list keyed to chapters, so a listener at chapter nine can jump to the right figure quickly.
• The visuals themselves, each with a clear caption and the chapter it belongs to.
• Worksheets or blank templates the reader can print, if your book asks them to do exercises.
• A resources page for links, further reading, or references you mention aloud.

Label every item so a listener can match it to what they are hearing, and number your figures in the same order the audio reaches them. A caption like "Figure 3, Chapter 5: the revision loop" lets someone find the picture the moment the narrator refers to it.

How to reference the PDF while narrating

The audio has to tell the listener the PDF exists, because nobody opens a file they do not know about. Build the references into the text before you generate the narration, so the finished MP3 already speaks them. You can edit the source text you feed in, which is the honest way to add these cues: change the words, not any invented narration controls.

Two light touches work well. Add a single line near the start, after the title and before chapter one, along the lines of: "This audiobook comes with a companion PDF containing the maps and figures, wherever you downloaded the audio." Then, at each spot where a visual matters, write a plain in-line pointer such as "see Figure 2 in the companion PDF" so the narration names it exactly.

Read those inserted lines back before you commit, so they sound like part of the book and never turn into a nag. A full quality check before publishing is the moment to confirm those cues read naturally in the finished audio. If your title uses chapter markers, aligning the PDF contents to the same chapter names makes the two files feel like one product. The same chapter boundaries you set when you split your manuscript into chapters give you a ready-made contents structure for the PDF.

Where stores and retailers keep the companion file

Support for companion PDFs varies by where you sell, so check the current rule at the time you publish rather than trusting an old memory of a platform. Some stores have a dedicated slot for a supplementary file that downloads next to the audio. Others expect you to bundle everything into a single delivery. A few have no mechanism at all, in which case you handle delivery yourself.

The safe assumption is that the audio and the PDF are two files you provide, and the store simply passes them along to the buyer. AudioProducer.ai plays no part in that step; it gives you the MP3, and the rest is between you and your sales channel.

Delivering the PDF alongside your audio

If your store handles supplementary files, upload the PDF into that field and let the platform deliver both together. If it does not, the common workaround is to sell and deliver the files yourself through a storefront or a direct-download link, so the buyer receives the audio and the PDF in one place.

Whatever the path, export the PDF at a resolution that stays readable on a phone, since many listeners open the companion on the same device that plays the audio. Match the naming of the two files so they sort together in a downloads folder, for example "book-title-audiobook" and "book-title-companion-pdf". Once your MP3 is finished, this delivery step is the same whether you produced the audio yourself or with AI narration: you own the file, and you decide where it goes.

Keep the two files in sync as you revise. If you change a chapter and the figure numbers shift, update both files and re-upload them wherever they live, because a listener who hears "see Figure 4" and finds a different picture loses trust in the package. A small date on the PDF cover page tells you which edition matches the current audio.

FAQ

Does AudioProducer.ai create the companion PDF for me? No. We produce the audiobook as an MP3 you download. You make the PDF separately with your own document tools and deliver it through your store or a direct link.

How much does making an audiobook cost? You can start free with 1,200 words and no card, which is enough to hear the voice on a real chapter. Paid plans begin at $39.99 per month for a set word allowance, so you can produce the full narration once you are happy with the sample.

Will listeners actually open the PDF? They will if the audio tells them it exists and points to it at the right moments. A short opening note plus a plain in-line cue such as "see Figure 2 in the companion PDF" is usually enough to drive people to the file when they need it.