Step-by-step Guide to Finalizing Your Audiobook for Acx Submission

March 16, 2026

By: Audio Scene

Creating an audiobook is an exciting process, but finalizing it for ACX (Audiobook Creation Exchange) submission requires careful attention to detail. This guide walks you through each step to ensure your audiobook meets all ACX standards and is ready for distribution.

Preparing Your Audio Files

Before submitting, verify that your audio files are correctly formatted. ACX requires:

  • File format: MP3 with a bit rate of 192 kbps or higher
  • Sample rate: 44,100 Hz
  • Channels: Mono or Stereo (Mono preferred)
  • File naming: Use consistent, descriptive filenames

Editing and Quality Check

Ensure your audio is clean and professional. Remove background noise, pops, and clicks. Listen through the entire recording to catch any errors or inconsistencies. Use editing software to normalize volume levels and add necessary pauses.

Creating the Cover Image

Your cover image must meet ACX specifications:

  • Minimum dimensions: 2400 x 2400 pixels
  • Format: JPEG or PNG
  • Color mode: RGB
  • File size: No larger than 10 MB

Writing the Book Description and Metadata

Accurate metadata helps listeners find your audiobook. Include:

  • Title and author name
  • Brief description or synopsis
  • Keywords and categories
  • Narrator information

Uploading to ACX

Log into your ACX account and follow the upload instructions. Upload your audio files, cover image, and metadata. Review the preview to ensure everything sounds correct and looks professional.

Final Checks and Submission

Before submitting, double-check:

  • All audio files meet ACX specifications
  • Cover image conforms to guidelines
  • Metadata is accurate and complete
  • Audio quality is consistent throughout

Once everything is verified, submit your audiobook for review. ACX will evaluate your submission and notify you of approval or any required corrections. With patience and attention to detail, your audiobook will soon be available to listeners worldwide.