Understanding Acx’s Requirements for Audiobook Cover Art and Metadata

March 16, 2026

By: Audio Scene

Creating an audiobook for ACX (Audiobook Creation Exchange) involves adhering to specific requirements for cover art and metadata. These standards ensure your audiobook is professional and meets platform guidelines, increasing its chances of success and discoverability.

ACX Cover Art Requirements

The cover art for your audiobook is a critical component. ACX has clear specifications to ensure your cover looks professional across all platforms.

  • Size: Minimum 2400 x 2400 pixels, maximum 3000 x 3000 pixels.
  • Format: JPEG or TIFF files only.
  • Color: RGB color mode.
  • Design: Must be clear and legible at thumbnail size.
  • Content: No promotional text, website URLs, or other extraneous information.

Ensure your cover art is visually appealing and complies with these standards to avoid rejection during the submission process.

Metadata Requirements for Audiobooks

Metadata provides essential information about your audiobook. Accurate and complete metadata helps listeners find your work and understand its content.

Key Metadata Elements

  • Title: Clear and concise, matching the audiobook content.
  • Author: The creator or narrator’s name.
  • Narrator: If different from the author, specify the narrator’s name.
  • Genre: Accurate categorization to reach the right audience.
  • Description: A compelling summary of the audiobook.
  • Language: The language in which the audiobook is narrated.
  • Keywords: Relevant terms to improve searchability.

Providing detailed and correct metadata ensures your audiobook is discoverable and correctly categorized within ACX and other platforms.

Additional Tips for Successful Submission

To maximize your chances of approval:

  • Double-check all specifications before uploading.
  • Use high-quality, professional cover art.
  • Ensure all metadata fields are complete and accurate.
  • Preview your submission to catch any errors or inconsistencies.

Understanding and following ACX’s requirements for cover art and metadata will help you produce a polished, professional audiobook ready for distribution.