Join multiple lines into one with a separator. Line Joiner is a free online tool from the ToolsRift Text Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Space, comma, semicolon, newline, or any custom separator string.
Yes — leading/trailing whitespace is trimmed from each line before joining.
Not directly, but you can process lines in groups using the split option.