Use the result while planning ingest, digitization, quality control, reporting, or preservation work where the stated rule needs to be repeatable and reviewable.

Uncompressed (bytes)

Uncompressed WARC payload size in bytes.

Compressed (bytes)

Compressed archive size in bytes.

Compute the storage compression ratio and percent savings for a WARC web archive from its uncompressed and compressed byte sizes. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Compression ratio

Compressed size divided by uncompressed size.

Savings percent

Storage savings as a percentage of the original size.

• Repository policies, format profiles, equipment capabilities, and descriptive standards vary. Preserve the source value and record the rule version instead of treating this utility as an authority-record or preservation-system validator.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Complement the calculation with format validation, fixity checks, provenance records, and human review. For policy decisions, apply the profile adopted by the repository rather than an undocumented local convention.

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