Loading…
Open the CSV files, get one back: rows appended in the order you added them, the header kept from the first file and dropped from the rest, and an honest count of rows in versus rows out. Each file is parsed properly — quoted commas and line breaks survive — but columns are appended as-is, not reconciled, so files should share a layout.
Files to merge, in order
Open two or more .csv files. They’re appended top to bottom in the order you add them, with the header kept from the first file and dropped from the rest.
Everything happens in this tab — nothing is uploaded, and closing the page discards it all. Cells are treated as text from start to finish, never coerced to numbers, so postal codes, part numbers and leading zeros survive untouched. Merge appends rows as they are; it doesn’t reconcile files whose columns differ.
Paste into the editor or open a file — everything you add stays in this tab, and you see exactly what the tool will work on before anything runs.
Your browser does all the work locally. Nothing is uploaded — what you paste never leaves this tab, so there’s nothing for anyone to store, scan, or leak.
Take the result to your clipboard, or save it as a file. Close the tab and nothing of what you pasted remains.