Add Prefix and Suffix to Lines

Copying a list out of a spreadsheet gives you bare lines. Most places you want to paste it need a little more: quotes around each value for code, a dash for Markdown, tags for HTML, a hash for social media. Adding that by hand is tedious and error-prone on a hundred lines. Type the text once and it goes on every line.

Quick recipes

The preset chips cover the common cases. “Quotes,” wraps each line as “value”, for an array or a list of strings in code. “- bullets” makes a Markdown or plain-text list. “li tags” produces <li>value</li> lines ready to drop between <ul> tags. “#hashtags” turns keywords into tags, and “https://” turns a list of domains into full addresses. “Numbered” uses the line number placeholder described below. Every preset only fills in the two boxes, so you can adjust them before copying.

Placeholders for numbers and the line itself

Three placeholders work in both the prefix and the suffix. {n} inserts the line number, starting from the number you choose. {N} inserts the same number padded with zeros to the width of the largest number, so a list of 120 lines is numbered 001 to 120 and sorts correctly as text. {line} repeats the content of the line, which lets you wrap a value twice, for example a prefix of <a href=" and a suffix of ">{line}</a> turns example.com into a link whose text is the address. For numbering alone, Add Line Numbers offers more formats.

Empty lines and stray spaces

With “Skip empty lines” on, blank lines in your list are left alone and are not counted, so paragraphs or groups stay visually separated. “Trim spaces first” removes spaces at the start and end of each line before the prefix and suffix are added, which avoids results like “ value “ that look right but fail in code or imports.

Removing a prefix or suffix

Switch to Remove to undo the job: type the exact text to strip from the start, the end or both. Only lines that start or end with that text change, and the counter shows how many did. This is useful for removing “> ” quote marks from a copied email, “- ” from a Markdown list or a domain from a list of addresses.

Typical uses

Developers wrap IDs in quotes and commas for an array or an enum. Marketers add UTM-free campaign links to a list of pages, or a hashtag to a keyword list. Teachers add “Q:” to a list of questions before printing. Anyone moving a list between apps can add the separators the next app expects. For a comma-joined result on a single line, Column to Comma-Separated List is the better fit.

Private by design

The lines you paste are processed in your browser and never uploaded. They stay in this tab only, so closing the tab or pressing Clear removes them.

Checking the result

Because the prefix and suffix are added literally, a single stray space shows up on every line. Look at the first and last few lines of the result before copying: a quote should sit right against the value, and a tag should close on the same line. If the source came from a spreadsheet, cells sometimes carry invisible trailing spaces, which “Trim spaces first” removes. When the result is meant for code, paste it into your editor and let its syntax highlighting confirm that every quote is closed.

Related tools

Tidy the list first with Remove Duplicate Lines or Sort Text Lines, and make wider changes with Find and Replace.