How text joiner works
This tool merges a block of text into a single string. It can split your input on line breaks (treating each line as an item) or on any whitespace (treating each word as an item), then join the pieces back together with the separator you choose.
Pick a built-in separator such as comma-plus-space, a semicolon, a pipe, a dash, a space, or a newline, or type a custom one. Each item is trimmed and empties are dropped so the join is clean. Turn on "Remove duplicates" to keep only the first occurrence of each item, which is handy for deduplicating a list before joining.
Everything runs locally in your browser. It is perfect for turning a column of values into a comma-separated list for a CSV, an SQL IN clause, or a tag string.