Compare Two CSV Files

Find the rows that were added, removed or changed between two CSV exports. Compared in your browser, so customer data is never uploaded.

Runs entirely in your browser — your file is never uploaded.

Questions

Will it match rows that moved?: Yes. Rows are matched on their content rather than their position, so re-sorting an export does not report every single line as changed.
Is this safe for an export with personal data in it?: Yes. The files are read in your browser and never transmitted, which is the difference that matters for a customer list.

Or open the full Diff tool.