What it is actually for
Three uses come up constantly: producing a test dataset to check an interface holds up, generating a repetitive template (table rows, list items), or building long text to test a layout. Numbering lets you spot instantly which occurrence is causing trouble.
Why a 10,000 cap
Repetition happens in your browser. With no limit, asking for a million copies of a paragraph freezes the tab, sometimes until it crashes. A cap of 10,000 covers every realistic use while keeping the tool responsive — and it tells you when the cap kicks in.
Frequently asked questions
Can I repeat several lines at once?
Yes, the whole content of the input box is repeated as one block, line breaks included.
How do I get a comma-separated list?
Pick «comma» as the separator: handy for generating a list of values to paste into a spreadsheet or code.
Does numbering start at 1?
Yes, the first occurrence is numbered 1.