Frequently asked questions
How are duplicate rows detected?
Two rows are duplicates when every cell matches exactly (after optional whitespace trimming). With "first row is a header" ticked, the header is always kept.
My file uses semicolons, not commas — will it work?
Yes. The delimiter is auto-detected (comma, semicolon, tab or pipe), and you can also set it manually — plus convert to a different delimiter on output.
Is my data private?
Completely. The file is parsed in your browser's memory — customer lists and financial exports never leave your machine.
What's the size limit?
Around 30 MB, which is roughly 200,000–500,000 rows depending on width. Beyond that, browsers get slow.