Guides
Testing extraction and contents before archive handoff
After choosing a format, verify the intended file list and recipient environment, test extraction and compare the contents with the originals.
Which format should you choose?
Choose by the role each file plays in your workflow.
- Record the inventory and extraction conditions
- Test, then extract into a separate folder
- Compare extracted files with the originals
Record the inventory and extraction conditions
Record included paths, file counts and sizes, creation tool and settings. For split archives, verify all parts and recipient support. Check compression and encryption methods, disk space and filename or path-length limits.
Test, then extract into a separate folder
Use a compatible tool's test function to check data or CRC errors. Seeing a listing does not mean every file was read. Verify provenance and test in an empty destination without overwriting existing files, controlling extraction paths and resource use.
Compare extracted files with the originals
Check missing or extra entries, changed names and name collisions against the inventory; compare individual content hashes when needed. Check timestamps and attributes separately. A matching transferred archive hash verifies transfer identity, not completeness relative to originals or content safety.
Formats to consider
Before you export
- Extraction tests and CRC checks are not malware scans or sender authentication. Do not run unknown executables; retain originals and verification records.
- Do not publish passwords through the same public channel. If parts are missing or errors occur, stop and consider reacquisition or recreation instead of destructive repairs.