Add Prefix and Suffix to Each Line Online

Free online tool to add a custom prefix and suffix to every line of text instantly. Perfect for bulk text processing, wrapping lines in HTML tags, generating email addresses, formatting SQL values, and creating Markdown lists. No login required — 100% free and private.

100% PrivateInstant ResultsWorks on Any Device

Options

How to Add Prefix and Suffix to Each Line

Follow these simple steps to add text before and after each line. It takes just seconds — no technical knowledge required.

1

Paste or Upload Your Text

Enter your text in the input box above, with each item on a separate line. You can also click "Upload .txt file" to load text from a file.

2

Enter Your Prefix and Suffix

Type the text you want to add before each line in the Prefix field, and the text to add after each line in the Suffix field. Use the checkboxes to add optional spaces.

3

Click "Add Prefix / Suffix"

Press the button to process your text. Every non-empty line will be wrapped with your prefix and suffix instantly.

4

Copy or Download the Result

Your formatted text appears in the Output box. Click "Copy" to copy it to your clipboard or "Download" to save it as a .txt file.

Why Use Our Free Prefix & Suffix Adder?

A fast, private, and reliable text tool built by professional developers at CoderDesign Toronto. Here is what makes it different.

Instant Processing

Add prefixes and suffixes to thousands of lines in a single click. No waiting, no server uploads — everything runs instantly in your browser.

100% Private & Secure

Your text never leaves your device. All processing happens locally in your browser. No data is stored, sent to servers, or tracked.

Works on Any Device

Use this tool on desktop, tablet, or mobile. Compatible with Chrome, Firefox, Safari, Edge, and all modern browsers — no installation needed.

File Upload Support

Upload .txt files directly and process them instantly. Download your formatted output as a file when you are done.

Built for Developers

Perfect for wrapping lines in HTML tags, generating SQL values, formatting CSV data, and creating Markdown lists. A developer's everyday tool.

No Sign-Up Required

Start using the tool immediately. No login, no account creation, no email required. Just paste your text and get results.

Common Use Cases

See how developers, marketers, and data analysts save hours of manual editing.

Generate Email Addresses

Turn a list of usernames into email addresses by adding a prefix like "info+" and a suffix like "@yourcompany.

Input

john.doe
emma.watson
mark.smith

Settings

Prefixinfo+

Suffix@company.com

Output

info+john.doe@company.com
info+emma.watson@company.com
info+mark.smith@company.com

Wrap Lines in HTML Tags

Convert a plain text list into HTML list items, table cells, paragraph tags, or any other HTML element by adding opening and closing tags.

Input

Home
About
Services

Settings

Prefix<li>

Suffix</li>

Output

<li>Home</li>
<li>About</li>
<li>Services</li>

Create SQL INSERT Values

Format data for SQL queries by wrapping each value in quotes and adding commas.

Input

Toronto
Vancouver
Montreal

Settings

Prefix('

Suffix'),

Output

('Toronto'),
('Vancouver'),
('Montreal'),

Add Markdown Checklists

Turn any list into a Markdown checklist, bullet list, or numbered list by adding the appropriate prefix.

Input

Review PR #42
Update docs
Deploy to staging

Settings

Prefix- [ ]

No suffix

Output

- [ ] Review PR #42
- [ ] Update docs
- [ ] Deploy to staging

Build URL Lists

Add a base URL as a prefix to generate full URLs from a list of page slugs.

Input

ai-seo-guide
how-to-build-mvp
ai-automation-roi

Settings

Prefixhttps://coderdesign.com/blog/

No suffix

Output

https://coderdesign.com/blog/ai-seo-guide
https://coderdesign.com/blog/how-to-build-mvp
https://coderdesign.com/blog/ai-automation-roi

Format CSV Data

Wrap values in quotes for CSV compatibility.

Input

Product A
Product B
Product C

Settings

Prefix"

Suffix",

Output

"Product A",
"Product B",
"Product C",

Frequently Asked Questions

Everything you need to know about adding prefix and suffix to text. Can't find what you're looking for? Contact us.

A prefix and suffix text adder is an online tool that lets you add custom text before (prefix) and after (suffix) each line in a block of text. For example, if you have a list of names and want to turn them into email addresses, you can add a prefix like "user+" and a suffix like "@gmail.com" to each line in one click, instead of editing each line manually.
Simply paste your text into the input box with each item on a separate line. Type your desired prefix in the Prefix field and your suffix in the Suffix field. Then click the "Add Prefix / Suffix" button. Your formatted text will appear instantly in the Output box, ready to copy or download.
Yes, this prefix and suffix adder is 100% free with no limitations. There are no hidden charges, no premium tiers, and no sign-up required. You can process unlimited lines of text as many times as you need.
Absolutely. All text processing happens entirely in your browser using JavaScript. Your text is never sent to any server, stored in any database, or shared with any third party. When you close the page, all data is gone. Your privacy is fully protected.
Yes. Click the "Upload .txt file" button below the input box to load a text file from your device. The contents will be loaded into the input area automatically. After processing, you can download the result as a new .txt file.
Common use cases include: generating email addresses from usernames, wrapping text lines in HTML tags (like <li> or <p>), creating SQL INSERT values with quotes and commas, building full URLs from page slugs, adding Markdown checkbox prefixes for task lists, formatting CSV data with proper quoting, and adding numbering or bullet points to lists.
Yes. You can leave either the Prefix or Suffix field empty. If you only enter a prefix, it will be added before each line with nothing added after. If you only enter a suffix, it will be added after each line with nothing added before. Both fields are optional.
Yes, this tool is fully responsive and works on smartphones, tablets, laptops, and desktops. It is compatible with all modern browsers including Chrome, Safari, Firefox, and Edge on both iOS and Android.
There is no hard limit. Since processing happens locally in your browser, you can handle thousands of lines. Performance may vary depending on your device, but typical documents with 10,000+ lines process in under a second on most modern devices.
When enabled, this option inserts a single space between the prefix and the original text on each line. For example, if your prefix is ">>" and your text is "Hello", the output will be ">> Hello" instead of ">>Hello". This is useful when you want the prefix visually separated from the content.

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