Stack a folder full of exports into a single clean table — Gridzu lines the columns up by name even when the files don't match, then exports one tidy CSV. No formulas, private and local.
Copy-pasting ten monthly exports into one sheet is slow and error-prone — one file with columns in a different order and your data silently shifts into the wrong place. Command-line tricks work but are fiddly, and they choke when a file is too big to load.
Open the files you want to combine and use Append. Gridzu stacks them into one table, matching columns by their name rather than their position — so an export where Email and Name are swapped still lands in the right columns. You can append three or more files at once, then Export → CSV for a single combined file.
If your problem is the opposite — one CSV that's simply too large to open — Gridzu opens files that are too big for Excel and handles millions of rows smoothly. Once it's open you can filter to the slice you need and export just that, which is often what people really mean by "splitting" a file.
Merged data usually has overlap. After appending, remove duplicate rows on the columns that define a match, or compare two of the files first to see what's actually different.
Every file is merged locally on your own machine — Gridzu never sends your data to our servers.
Open each CSV in Gridzu and use Append to stack them into a single table, matching columns by name. Then export the combined table back out as one CSV. You can append three or more files at once.
Gridzu appends by matching column names, not position, so files whose columns are in a different order still line up correctly. Columns that only exist in some files are kept and left blank where a file didn't have them.
Yes. Gridzu is built for large files, so you can merge or work through CSVs with millions of rows that Excel would refuse to open or would truncate.
No. All merging happens on your own computer. Your files are never sent to our servers.
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