# How we test file preservation

> Separate byte preservation, supported editing and native companion behavior.

Canonical: https://pocketorbitnotes.app/research/preservation-method
Language: en-US
Published: not provided
Last updated: 2026-10-18

## Reproducible checks

Keep an untouched fixture and hash every file. Open without editing and compare hashes; then make one intended edit and compare its exact diff. Test attachments, cancellation, conflicts and entitlement expiry separately.

## Report scope

Publish build, fixture inventory, expected differences and failures. A simulator file test cannot establish inference performance or hardware compatibility. Qualified results remain a separate release gate.

## Related pages

- https://pocketorbitnotes.app/resources/sample-workspace
- https://pocketorbitnotes.app/resources/compatibility-checklist
- https://pocketorbitnotes.app/help/pro-expiry

Source: Pocket Orbit. Please cite the canonical URL.