Prefix / Suffix

Add Prefix or Suffix into line.

Input Text

Prefix

Suffix

Output Text

What It Does

The Prefix and Suffix Adder is a powerful text transformation tool that lets you instantly append custom text to the beginning and/or end of every line in your input. Whether you need to wrap hundreds of lines with HTML tags, add bullet points to a plain list, surround values with quotation marks for SQL queries, or prepend a consistent label to each row of data, this tool handles it all in seconds — no scripting required. Designed for developers, data analysts, content writers, and anyone who works with structured text, this tool eliminates the tedious manual work of editing each line individually. Simply paste your text, define your prefix (text added before each line) and/or suffix (text added after each line), and the transformed output is ready to copy instantly. Common applications include formatting CSV data, building HTML lists, constructing import-ready SQL INSERT statements, adding markdown syntax, and creating configuration file entries. Because it processes every line independently, the tool is equally useful for five lines or five thousand. It respects blank lines and whitespace, giving you predictable, clean output every time. This free online utility requires no installation, no login, and no technical knowledge — just paste, configure, and copy.

How It Works

The Prefix / Suffix applies its selected transformation logic to your input and produces output based on the options you choose.

It applies a fixed set of transformation rules to your input, so the output is stable and easy to verify.

All processing happens in your browser, so your input stays on your device during the transformation.

Common Use Cases

Wrapping each line of a plain list with HTML <li> tags to quickly build an unordered or ordered list for a web page.
Adding a bullet point character or dash to the start of every item when converting raw notes into a formatted markdown list.
Surrounding a column of values with single quotes to prepare a batch SQL query, such as turning a list of names into ('Alice'), ('Bob'), ('Carol').
Prepending a shared URL base path to a list of filenames, turning filenames like image1.jpg into https://cdn.example.com/image1.jpg.
Adding an opening and closing quotation mark to every line when building a JSON array of strings from a plain list of values.
Appending a consistent file extension (like .txt or .csv) to a list of filenames that are missing their extensions.
Adding log prefixes such as [INFO] or timestamps to each line of exported log data before pasting into a report or ticket.

How to Use

Paste or type your multi-line text into the input area — each line will be treated as an independent unit for transformation.
Enter your desired prefix in the Prefix field. This text will be added to the very beginning of every line in your input, exactly as typed.
Enter your desired suffix in the Suffix field. This text will be appended to the very end of every line, including any trailing spaces or characters you specify.
Leave either field blank if you only need to add a prefix or only a suffix — both fields are optional and work independently.
Review the live output preview, which updates as you type, to confirm the transformation looks exactly right before copying.
Click the Copy button to copy the fully transformed text to your clipboard, ready to paste into your editor, database tool, or application.

Features

Independent prefix and suffix fields — apply one, the other, or both simultaneously without any restrictions.
Real-time output preview that updates instantly as you type your prefix or suffix, so you always see the result before copying.
True line-by-line processing that applies transformations to every single line, including short lines and lines with special characters.
Support for any character in prefix and suffix fields, including spaces, punctuation, HTML tags, quotes, brackets, and Unicode symbols.
Handles large text inputs efficiently, making it suitable for bulk data transformation involving hundreds or thousands of lines.
Preserves original line order, spacing, and indentation within each line — only the prefix and suffix are added, nothing else is altered.
One-click copy to clipboard for instant use of the output without selecting text manually.

Examples

Below is a representative input and output so you can see the transformation clearly.

Input

alpha
beta

Output

[alpha]
[beta]

Edge Cases

Very large inputs may take a few seconds to process in the browser. If performance slows, split the input into smaller batches.
Mixed formatting (tabs, line breaks, or inconsistent delimiters) can affect output. Normalize spacing first if needed.
Prefix / Suffix follows the selected options strictly. If the output looks unexpected, re-check option settings and input format.

Troubleshooting

Output looks unchanged: confirm the input contains the pattern this tool modifies and that the correct options are selected.
Output differs from a previous run: confirm that the input and every option match, because deterministic tools should repeat when the settings are identical.
Unexpected characters: check for hidden whitespace or encoding issues in the input and try normalizing first.
Slow processing: reduce input size or try a modern browser with more available memory.

Tips

When building SQL value lists, set your prefix to (' and your suffix to ') to wrap each line in parentheses and single quotes in one step — then join the lines with commas in your query. If your prefix or suffix itself contains special characters like quotes, type them exactly as you want them to appear; the tool will not escape or modify what you enter. For markdown formatting, you can use ** as both prefix and suffix to bold every item in a list simultaneously. Always glance at the first and last lines of your output to catch any unintended leading or trailing spaces in your prefix or suffix fields before copying the full result.

Text transformation is one of the most common and repetitive tasks in software development, data processing, and content production. The prefix and suffix pattern — adding consistent text before and after each line — sounds simple, but it unlocks an enormous range of practical workflows that would otherwise require scripting knowledge or tedious manual editing. **What Are Prefixes and Suffixes in Text Processing?** In text processing, a prefix is any string of characters inserted at the start of a unit of text (in this case, a line), while a suffix is any string inserted at the end. Applied uniformly across every line, these two operations let you wrap, tag, quote, or annotate large blocks of text in a single pass. This is conceptually the same operation that programming languages perform with string concatenation in a loop — but done visually and interactively, without writing a single line of code. **Why This Matters for Developers and Data Workers** Developers frequently need to transform raw data into code-ready formats. A list of user IDs needs to become a JavaScript array. A column of image filenames needs a CDN base URL prepended. A set of configuration values needs to be wrapped in XML tags. Without a dedicated tool, the options are to write a throwaway script, use a complex find-and-replace regex, or edit every line by hand. All three approaches are slower and more error-prone than using a purpose-built prefix/suffix tool. Data analysts face similar challenges when preparing data for import. SQL INSERT statements require values wrapped in parentheses and quotes. CSV exports sometimes need a consistent column header or unit suffix added to values. The prefix/suffix tool handles these transformations in seconds. **Prefix/Suffix vs. Regular Expressions** For simple, uniform transformations, a prefix/suffix tool is almost always faster and safer than writing a regular expression. Regex is powerful for pattern-based replacements, but it requires precise syntax and is easy to get wrong — especially when dealing with special characters like parentheses, dots, or quotes that have regex meanings. A dedicated prefix/suffix tool takes your input literally, so what you type is exactly what gets added, making the result completely predictable. For multi-step transformations — such as both adding a prefix and converting text to uppercase — you might chain multiple tools together. Use the prefix/suffix tool first, then pass the output to a case converter or find-and-replace tool. **Common Real-World Patterns** Some of the most popular use cases developers rely on: - **HTML list building**: Prefix `

`, suffix `

` — paste result directly into an `

` block. - **SQL batch inserts**: Prefix `('`, suffix `'),` — produces comma-separated value tuples ready for an INSERT statement. - **JSON array strings**: Prefix `"`, suffix `",` — converts a plain word list into quoted JSON string entries. - **Markdown bold**: Prefix `**`, suffix `**` — bolds every line in one step. - **Import-ready file paths**: Prefix with a directory path, suffix with a file extension. These patterns repeat constantly across engineering, analytics, and writing workflows, which is why a fast, reliable prefix/suffix tool is one of the most quietly essential utilities in any developer's browser bookmarks.

Frequently Asked Questions

What is a prefix and suffix in text editing?

A prefix is text added to the beginning of a line or string, while a suffix is text added to the end. For example, if your line is apple and you set a prefix of - and a suffix of !, the result is - apple!. In text processing tools, applying a prefix and suffix to every line at once lets you format entire lists or datasets in seconds. This is the core operation behind many data formatting and code generation tasks.

Can I add only a prefix without a suffix, or vice versa?

Yes, both fields are completely independent and optional. You can fill in just the prefix field and leave the suffix blank, or fill in only the suffix and leave the prefix empty. The tool will apply whichever fields you've populated and leave the rest of each line unchanged. This makes it flexible for scenarios where you only need to tag the beginning or end of your lines.

Does this tool work with HTML tags as prefix and suffix?

Absolutely. You can type any HTML tag directly into the prefix and suffix fields. For example, entering <strong> as a prefix and </strong> as a suffix will wrap every line in bold HTML tags. This is one of the most popular use cases for the tool, as it allows developers and content editors to convert plain lists into fully tagged HTML markup without writing any code.

How do I use this tool to prepare data for a SQL query?

To format a list of values for a SQL INSERT statement, set your prefix to (' and your suffix to '). Each line of your input will be wrapped in parentheses and single quotes, producing output like ('value1'), ('value2'). You can then copy this output and use it directly in an INSERT INTO table (column) VALUES ... statement. This saves significant time when bulk-inserting data without an import wizard.

What happens to blank lines in my input?

Blank lines are treated as lines with no content, so the prefix and suffix will still be applied to them. If you have a blank line and set a prefix of - , the output will include a line that is just - followed by your suffix. If you want to avoid this, remove blank lines from your input before processing, or use a line-filter tool first to strip empty lines.

How is this different from using Find and Replace?

Find and Replace requires you to write a pattern that matches the beginning or end of a line, typically using regular expressions (like ^ for start and $ for end), which many users find difficult to write correctly. A dedicated prefix/suffix tool removes that complexity entirely — you just type what you want to add and the tool applies it literally. It's faster, more visual, and less error-prone for this specific task.