Add Prefix/Suffix to Each Line

About Add Prefix/Suffix to Each Line

This tool takes whatever's pasted in, splits it into individual lines, and wraps each one with the prefix and suffix text set above. It updates live while typing, so the exact result is visible before copying it out. With "Skip blank lines" turned on, empty lines in the input stay empty in the output instead of turning into a prefix and suffix with nothing in between, which keeps spacing and formatting intact.

• Prefix and suffix, either one can be left empty if only one side needs adding.
• Skip blank lines, on by default, preserves blank lines as truly blank rather than prefix+suffix pairs.
• Live preview, the result updates as soon as any input changes.

Turning a plain list into a SQL or code snippet

This is a common enough job that it's worth naming directly: a plain list of values pasted from a spreadsheet needs to become a SQL IN clause, each value quoted and comma-separated, or a list of variable names needs to become a series of destructured object keys. Setting prefix to ' and suffix to ', turns a bare list of IDs into ready-to-paste SQL values in one pass, faster and less error-prone than manually adding quotes and commas to each line by hand, especially past a dozen or so entries where a manual approach starts risking a missed comma or an unmatched quote.

Building a Markdown or HTML list

A prefix of - turns a plain list into Markdown bullet points instantly, and a prefix of <li> paired with a suffix of </li> does the same for an HTML unordered list, both are quick conversions that would otherwise mean manually retyping the same wrapper text on every single line. Command-line flag lists work the same way, a prefix of -- turns a plain list of option names into a properly formatted flag list for a shell command or config file.

What "Skip blank lines" actually changes

Without it, a blank line in the middle of a pasted block gets the prefix and suffix applied to nothing, turning an empty line into literal prefix-suffix text sitting on its own line, which is rarely the intended result. With it on, a blank line passes through untouched, preserving whatever paragraph or section spacing existed in the original input. Leading and trailing spaces within a non-blank line are left exactly as pasted, only the line's overall blank-or-not status is checked, so existing indentation inside a line is never stripped or altered.

A faster alternative to spreadsheet formulas or find-and-replace

The same result can technically be produced with a spreadsheet concatenation formula or a careful find-and-replace with regex support, but both come with extra setup for a task that's genuinely simple, define the prefix and suffix once, and every line gets it applied instantly with a live preview to confirm the result looks right before committing to it. For a one-off list of a dozen entries or a recurring weekly export that needs the same wrapping applied every time, typing the prefix and suffix directly is faster than building or remembering a formula.

Handling text that already contains quotes or special characters

Because the prefix and suffix are inserted exactly as typed with no automatic escaping, wrapping a line that itself contains the same quote character used as a delimiter, a value like O'Brien going into a single-quoted SQL list, produces output that would break as SQL syntax without additional escaping handled separately. This tool focuses purely on wrapping every line consistently, it doesn't attempt to detect or escape characters that might conflict with the prefix or suffix being added, that step still needs to happen separately for data that isn't already clean.