Documentation

xlLens manual

Learn comparison modes, filters, reports, automation, supported formats, and large-workbook behavior.

Getting started

Choose two workbooks, select a comparison mode, and inspect your first result.

Choose alignment behavior that matches the workbook change you are reviewing.

Understand value, formula, format, structure, VBA, connection, name, comment, and protection changes.

Export bounded comparison results with hashes, alignment evidence, and product version.

Automate deterministic JSON or CSV comparisons with documented exit codes.

Learn how streaming indexes, bounded paging, and spill files keep the UI responsive.

Reproduce xlLens workbook parsing and comparison measurements without treating them as competitor speed claims.

See what xlLens reads directly and which workbook features are not implemented yet.