📋 Line Tools (Number, Prefix, Suffix, Pad)
Operate on every line at once — number them, add a prefix or suffix, or pad them to a fixed width.
How the line tools (number, prefix, suffix, pad) works
Choose an operation and it is applied to every line: “Number lines” prepends an incrementing, right-aligned number from your chosen start; “Add prefix/suffix” wraps each line with the text you enter; and the pad options align every line to a fixed width. Handy for building lists, code, and aligned columns.
Several small per-line transforms bundled into one deterministic page — the kind of bulk text surgery that is tedious to do by hand across hundreds of lines.
Frequently asked questions
How do I number a list of lines?
Choose “Number lines” and set the starting number in the value box. Each line gets a right-aligned number and a period, so the list stays neatly aligned even into the hundreds.
How do I add the same text to every line?
Choose “Add prefix” or “Add suffix” and type the text in the value box — for example a “- ” prefix to make a bullet list, or a “,” suffix to build a comma-ended list.
What does padding do?
It makes every line the same width by adding spaces, either on the right (left-aligned) or the left (right-aligned) — useful for aligning columns in monospace text.
Does it change blank lines?
Blank lines are treated like any other line — they get numbered or padded too, which keeps the line count in sync with your original.
Is my text uploaded?
No — every operation runs in your browser.