Choose two exports
Choose CSV, TSV or Excel .xlsx files, or paste CSV text. For a workbook, pick the worksheet. Review a five-row preview. Delimiter suggestions respect quoted cells; you can choose comma, semicolon or tab yourself.
A small tool for a recurring spreadsheet job
Two exports.
A clear review list.
Repeat checks of order or invoice register exports, from CSV files or Excel workbooks: compare shared record IDs, review changed status, quantity or amounts, and find missing or duplicate rows.
Files stay in your browser · No account for the demo
Your comparison Synthetic example
6review entries in the example2 files
Changed amountORDER-002450 → 475 NOK
Missing on rightORDER-004Check export
Duplicate keyORDER-005Review both rows
2 matches and 6 review entries. See every outcome in the worked example.
Works with CSV and Excel exportsExact decimal comparisonExport a review reportNo per-use AI bill
A clear route from files to findings
Compare the data.
Keep the decisions.
Map the fields
Select each file’s record ID. Pair text fields such as status or quantity across different headers, plus optional exact decimal amounts and currency. Unselected columns are listed clearly.
Review and export
Search by key, filter each result status, inspect old and new field values, and export the current view or full report.
Built for exports you already have
Less setup.
More clarity.
Useful for comparing order lists, billing exports or two versions of an operational dataset that share a reliable key.
Read the format guide ↗Different column names? Map them before comparing.
European decimal comma? Select the format for each source.
Repeat the same comparison? Export a mapping profile containing settings only.
Sensitive files? The comparison app runs on your device and does not upload file contents.
Start with the sample. Test your format.
A download you can keep.
The full app is a portable HTML application. Extract the ZIP and open index.html in a current desktop browser. A native installer is not required.
Excel .xlsx workbooks open directly; older .xls and password-protected workbooks must be saved as .xlsx or CSV first. Exact matching requires one unique key per source. Split invoices, fuzzy matching and automatic accounting entries are outside this version.
Choose who will use it
One app. Two license options.
Individual
NOK 799 one time
One named user, for internal business or personal work.
Available · One-time software purchase
Buy Individual — NOK 799 one time ↗Team
NOK 1999 one time
Up to 5 named users in one purchasing legal entity, for internal business use.
Available · One-time software purchase
Buy Team — NOK 1999 one time ↗Same version, same 200,000-row and 50 MiB limits per source, for CSV, TSV and Excel .xlsx files. Team changes the permitted number of users; it adds no collaboration feature or service.
Compare all license options ↗Download the free 500-row demoBefore you compare
Useful limits, clearly stated.
A difference needs context
A missing record can come from an export filter, time period or billing schedule. A flag is not proof of lost revenue.
Duplicates stay visible
The app does not guess which duplicate is correct or combine financial values across currencies.
Review financial conclusions
Check the source data, tax basis and reporting period before acting. This is a comparison tool, not accounting advice.
A practical question
Why use this instead of a spreadsheet?
A spreadsheet may already do this job well. CSV Compare offers a guided mapping step, an exception report and reusable mapping profiles for repeated checks. Try the same small exports in both and decide which workflow suits you. It does not replace spreadsheet analysis or custom reconciliation rules.
Check the inputs and expected results ↗
Step-by-step guides: compare two CSV files · compare two Excel sheets · reconcile order or invoice exports · compare supplier price lists · find missing records · check a stock count · på norsk
Try it before considering a purchase