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Audiobook distribution

Audible, Spotify, Storytel, libraries — one upload.

Audiobook distribution shouldn't require six separate uploads to six platforms with six different metadata schemas. Chiify handles ACX, Apple, Spotify, Storytel, Kobo Audio, Hoopla, OverDrive, and library audiobook ingestion from a single drop of your audio files.

Distribute your audiobook free How Chiify works

The audiobook market grew faster than every other publishing format for the last five years. Per-hour pricing is high. Library checkouts are explosive. But the platforms each have different file specs, different metadata fields, different submission portals, and Audible has ACX rules that change quietly.

Chiify handles all of that. You drop chapter files. We deliver to every audio platform you select, with the right file format and metadata each one demands.

Distribution reach

Direct platform integrations

  • Audible (via ACX) — the world’s largest audiobook retailer.
  • Apple Books — strong in iOS markets.
  • Spotify Audiobooks — growing fast, Spotify Premium includes audiobooks in many markets.
  • Kobo Audio — bundles with Kobo Plus subscription, strong in Canada/Australia.
  • Storytel — leader in the Nordic and Brazilian audiobook markets.
  • Google Play Audiobooks — Android marketplace.

Library audiobook networks

  • OverDrive / Libby — the dominant US public library digital audiobook platform.
  • Hoopla — instant-checkout (no waitlist) library audiobook service used by 9,000+ US libraries.
  • cloudLibrary — major library audiobook reach.
  • Bibliotheca — additional library distribution.

File specs we accept (and validate)

For best results: WAV master files

  • 44.1 kHz, 16-bit, mono or stereo
  • One file per chapter, named numerically (01-chapter-one.wav, 02-chapter-two.wav…)
  • Including any “opening credits,” “closing credits,” “retail sample” sections as separate files where ACX requires them

Also accepted: MP3

  • 192 kbps CBR or higher
  • Same chapter-per-file naming convention

Quality checks we run automatically

  • Peak level — no clipping (peaks above -3 dBFS get flagged)
  • RMS levels — chapters mastered close to ACX’s -20 RMS guideline
  • Room tone — silence at start and end of each chapter (ACX requires this)
  • Length consistency — chapter lengths reasonable (no “chapter 5” that’s 2 seconds long, no “chapter 10” that’s 6 hours)

If a file fails one of these checks, we tell you exactly what failed and how to fix it — before submitting to ACX and getting their slower, vaguer rejection.

ACX and Audible — what to expect

Audible is the largest audiobook retailer and worth the extra effort. Their ingestion (through ACX) is the strictest in the industry. We pre-validate your files against ACX’s requirements so the actual submission goes cleanly.

ACX wants: WAV files, RMS levels in a narrow window (-23 to -18 dBFS), peak -3 dBFS max, 0.5 to 1 second of room tone at the start and end of each chapter, one file per chapter, and a separate “Audible-only opening credits” file at the start. We auto-generate the opening/closing credits files from your metadata if you don’t have them.

ACX reviews can take 10–15 business days. Going wide (non-exclusive to Audible) gets you onto Apple, Spotify, Storytel, libraries — typically live within 2 weeks total.

Frequently asked

What audio file format do you need?
We accept WAV (uncompressed, 44.1 kHz, 16-bit) or MP3 (192 kbps or higher, constant bit rate). One file per chapter, named in sequence. If you've recorded a single long file, we can split it for you on chapter boundaries — just send the chapter timestamps.
Does Audible take Chiify audiobooks?
Yes — through ACX (Audible's content distribution partner program). We handle the ACX submission, metadata, and compliance checks. Audible/ACX requires specific technical specs (room tone, no clipping, peak level, mastering RMS) which we validate before submission. If your file doesn't meet ACX specs, we tell you exactly what to fix and re-upload.
Is Audible exclusive when I distribute through Chiify?
Up to you. Audible offers a higher royalty if you're exclusive to them, and a lower royalty if you go wide. We can submit your book as exclusive or as wide-distribution. Most authors who distribute through Chiify go wide because they want Spotify and Storytel and library audiobook reach in addition to Audible.
What about library audiobook platforms?
Through Cantook and our other library aggregators we reach: OverDrive, Hoopla, cloudLibrary, Bibliotheca, Libby — basically every digital library platform. Library audiobooks have different economics (per-checkout fees rather than per-sale royalties) but for many narrators-as-authors the volume more than makes up the difference.
Can you produce the audiobook from my text?
Production (recording, narration, mastering) is not included in our distribution service — that's a separate craft. If you don't have a narrator, we can refer you to professional narrators or to AI-narration services (with the caveat that Audible and a growing list of other platforms are tightening their AI-narration rules; we'll tell you which platforms will accept which type of production).
Does the ebook and audiobook need separate ISBNs?
Yes — ISO standard. We allocate separate ISBNs for each format automatically (both free on every plan).

More on Chiify

Ebook distribution →

Pair your audiobook with the ebook on every major retailer and library.

Free ISBN included →

Separate ISBNs for ebook and audiobook (per ISO standard), both free.

ONIX feeds for publishers →

If you run a press, our ONIX feeds carry your full audio + ebook + print catalog to every channel.

Drop the files. We handle the platforms.

Audible, Spotify, Storytel, every major library audio service — from one upload. Free to start.

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