hives.

Compare your CSVs.

Drop two files. See the changes. Export.

Files stay in your browser
A · BeforeB · After
UTF-8 CSV · 2 MiB per file
Instructions

Files stay in your browser. Nothing is uploaded or sent to AI. Drop two UTF-8 comma-separated CSV files with headers, up to2MiB,10,000data records and100columns each. Quoted commas and line breaks work.

Keys are suggested automatically: a shared ID-like column first, then an ID-like column in each file, then the first column. Check or change the visible keys. Charts and the spreadsheet update automatically. Exact text matching preserves case, spaces and leading zeros. Duplicate or blank keys are never silently paired. This is a comparison, not a migration certificate.

The spreadsheet previews up to100records and240characters per cell. Choose A/Before or B/After to see highlighted changes in the original columns. Full details are in the export. Visual reports contain a bounded preview plus all selected comparison details; oversized visual exports are refused rather than truncated. TXT keeps complete results. Neither format includes unselected value fields.

Reports are downloaded locally and contain your comparison data: share them deliberately. Clear removes loaded state, not a promise of secure RAM erasure. A separate Hives enquiry does not attach your files or report. Share copies only the tool URL.

The built-in example is synthetic: one changed record, one unchanged, one only in each file and unresolved duplicate/blank keys. No customer data.

What we do

Software that works
for your team.

Build and improve

New tools, useful features or improvements to software your team already uses.

You get A working feature or improvement, relevant checks and a clear handover.

Connect your tools

Data gets lost, duplicated or copied by hand between systems.

You get An agreed data flow, a working connection and error handling.

Automate repeat work

Updates, checks and routine tasks keep landing back on someone's list.

You get A useful script or workflow, clear inputs and operating notes.

New tools, customer-facing features and connected business workflows. We check your systems, then agree deliverables, total price and timing before billable work.

Clear from the start

Your $500 credit.

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