What does “no issue detected” mean?
It means the selected BookPreflight rule set did not detect a covered issue. KDP may apply additional automated or manual review, so this is not an acceptance guarantee.
When is a repair called safe?
A deterministic operation must preserve visible content and aspect ratio, avoid new errors, pass a visual-content comparison and pass a complete post-flight. Otherwise it requires your choice or manual work.
When is a credit consumed?
Billing is currently disabled, so eligible anonymous safe repairs do not consume a credit. If paid repairs are enabled later, the current policy reserves a credit first and commits it only after the repaired PDF passes every verification gate.
Can a PDF run embedded scripts?
No. Uploaded files are quarantined; active actions, JavaScript, embedded files and risky links are detected before isolated processing. Workers have no network access by default.
How do I report a security issue?
Use the private security contact described in SECURITY.md. Do not paste sensitive PDF content into a public issue or general feedback form.