Everyone shows you what changed. We show you what matters.
Your files never leave your computer.
Open two snapshots and this page compares them on your own machine. Nothing is sent anywhere, there is no analytics, and nothing you open is stored.
Proof you can check: load this page, then disconnect from the internet — comparing still works.
Free tier — up to 500 rows per file. Pro (10,000 rows) unlocks with a key.
STAGING BUILD — the caps above are adjustable staging defaults, not final prices.
Staging test key: STRANDDIFF-STAGING-TEST — this is a staging-only test key, not a real license.
Real keys come after payment exists. The key lives in this tab's memory only and is forgotten when you close the tab.
Reference (before)
Or paste text below. JSON rows, or CSV with a header row.
Sample (after)
Or paste text below. JSON rows, or CSV with a header row.
Formats: JSON arrays of rows (product_name, subcategory, pack_size, price_cents, price_type)
or CSV with a header row (concept,product,price,price_type optional, pack_size optional).
CSV rows whose field count differs from the header are flagged as anomalies and never fed shifted to the differ.
Same files in, same report out, every time.