ACX Painkiller for Narrators

Stop wrestling with ACX specs. Finish your audiobook faster.

ACX Painkiller turns chapter audio into ACX-ready MP3 deliverables in one local batch workflow, with built-in QC checks and clean output packaging.

ACX Painkiller: the fast local workflow for ACX-ready audiobook deliverables.

“Built for indie narrators and self-publishing authors who want less DAW busywork, fewer rejection loops, and faster upload-ready files.”

Cut hours out of every book
Run all chapters in one pass instead of repeating manual mastering and QC steps.
Reduce ACX rejection risk before upload
Automatically checks loudness, peak, and noise-floor targets and surfaces what needs attention.
Rerun without redoing finished work
Smart skip/resume flow processes only what still needs work, so revisions are fast.
Keep everything local and private
No cloud upload queues, no waiting on remote processing, no giant file transfers.
Deliver cleaner, more consistent packages
Standardized chapter naming and organized outputs make final zips easy to review and submit.
ACX Painkiller
Built for repeatable audiobook production where consistency and speed matter on every chapter.

How It Works

1
Drop your folder
Add your folder of chapter WAV/MP3 files (or a parent folder of books).
2
Click Process
Run batch conversion and QC in one pass.
3
Review and upload
Check the report and outputs, then upload with confidence.

QC report preview

•Local batch processing: one workflow from raw chapters to ready-to-upload files
•Built-in ACX targeting: normalization, peak/noise checks, silence handling
•Long-file handling: split support for over-limit files
•Audit-friendly reporting: quick chapter-by-chapter QC visibility
•Filename cleanup: consistent chapter naming and sort order
•Resume-friendly reruns: skip already completed chapters automatically

Less editing grind. Fewer surprises. Faster publishing.

Process your audiobook chapters in one local pass and get consistent ACX-ready deliverables faster.