Can I number each row?

Yes, enable the numbering option and put {n} in the prefix or suffix.

Does it change my line order?

No, lines stay in the order you pasted them.

Is there a line limit?

No hard limit — processing happens locally, so very large lists depend on your device memory.

Is my data uploaded to a server?

No. This tool runs entirely in your browser using standard web APIs, so your input never leaves your device and nothing is logged or stored on our servers.

Does it work offline and on mobile?

Yes. Once the page has loaded it keeps working without a network connection, and the layout is responsive so it stays usable on phones and tablets.

Prefix & Suffix Adder

Add text to the start or end of every line at once.

Support

Works Offline

Privacy First

No Login

No API

Prefix

Suffix

Trim lines

Skip empty

Replace {n} with row number

Input lines

Output

Lines

https://example.com/home
https://example.com/about
https://example.com/contact

About the Prefix & Suffix Adder

Bulk-edit a list by adding a prefix and/or suffix to each line — build URLs, quote values, wrap items in tags, or number rows with the {n} placeholder. Trim and skip-empty options keep the output clean.

Examples

Build URLs

home
about

Output

https://example.com/home
https://example.com/about

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

Related tools

Email & URL Extractor

Text & String

Pull emails, links, domains and phone numbers out of any text.

Line Numbering Tool

Text & String

Add or remove line numbers from text with custom formatting.

Lines to String Converter

Text & String

Turn newline-separated lines into a quoted, comma-joined string.

List Comparator

Text & String

Compare two lists and see common, A-only and B-only items.

List Randomizer

Text & String

Shuffle a list of lines and optionally pick a random subset.

Online Notepad

Text & String

A distraction-free notepad with multiple notes that auto-save in your browser.

Frequently asked questions

Version 1.0.0 · Updated 2026-08-24 · Runs entirely in your browser