Free · No signup · Runs in your browser

Compare two datasets, side by side.

Drop two CSVs and get a clean side-by-side comparison — row counts and every shared numeric metric, with the percentage delta between them. Name each side and share the whole thing with one link.

01 · How it works

Three steps, then done.

Comparing two exports — this month vs last, us vs them, before vs after — usually means a spreadsheet and squinting. Drop both here and get a labelled, side-by-side comparison of the metrics they share, ready to publish.

i. drop

Drop both files

Dataset A and Dataset B — CSV or Excel, parsed locally.

ii. label

Name each side

Give A and B meaningful names (e.g. 2024 vs 2025) for the published comparison.

iii. share

Publish the link

Copy a link with both datasets encoded in it — great for a tweet, post or report.

02 · Why ours

A comparison you can publish.

Side-by-side metrics with deltas, labelled and shareable — built for analytics-Twitter and journalism.

  • 01

    Shared-metric deltas

    Every numeric column the two files share is compared — total and average — with the percentage change.

  • 02

    Named sides

    Label A and B so the comparison reads clearly when you share it.

  • 03

    One shareable link

    Both datasets are encoded in the URL — publish it anywhere; it renders in the reader's browser.

  • 04

    Local-first

    Both files are compared in your browser. Nothing is uploaded or stored.

"Published a 2024-vs-2025 comparison as a single link — it just rendered for everyone who clicked."
— a data journalist
03 · FAQ

compare questions.

What gets compared?
Row counts, plus the total and average of every numeric column that appears in both files (matched by column name), each with the percentage delta from A to B.
Both datasets and your labels are encoded into the link after the # fragment. Anyone who opens it renders the same comparison locally — there's no backend and nothing is stored.
CSV Diff shows row-level changes (added/removed/changed). CSV Compare shows aggregate metrics side by side — better for a published 'A vs B' summary than a row-by-row audit.
Both files ride in the link, so very large datasets make a long URL. It works, but keep files focused for easy sharing.
No — the comparison is built entirely in your browser.