What is Join/Split Text?

Join/Split Text is an online tool that helps you combine multiple lines into a single line using a delimiter, or split a line of text into multiple lines. It's a simple but powerful utility for anyone working with lists, data, or formatted text.

Whether you need to prepare data for SQL queries, convert CSV values to a list, or break long text into manageable chunks, this tool handles it all with real-time preview and flexible options.

Two Modes, Many Possibilities

Join Mode

Combine multiple lines into one line, separated by your chosen delimiter (comma, semicolon, pipe, etc.)

Split Mode

Break a single line into multiple lines by delimiter, character count, or word count

Who Uses This Tool?

Developers

Preparing data for SQL IN clauses or array literals

Data Analysts

Converting between CSV and list formats

Content Writers

Formatting lists for different platforms

System Administrators

Parsing log files or configuration data

Anyone

Who needs to quickly transform text between formats

Your Text Stays Private

100% Client-Side Processing: All text processing happens entirely in your browser. Your data never leaves your device.

No server uploads - Your text never leaves your device
No storage - Nothing is saved or logged
No tracking - We don't collect any usage data

You can safely process sensitive data knowing it remains completely private on your computer.

How to Use Join/Split Text

This tool is straightforward to use. Simply choose your mode, select a delimiter, and paste your text. The result appears instantly in the output area.

Join Multiple Lines

To combine multiple lines into one:

Select Mode

Choose Join Lines mode (default)

Enter Text

Paste or type your list with each item on a new line

Choose Delimiter

Select a delimiter (comma, semicolon, tab, etc.)

View Result

The output shows all items joined on a single line

Copy Output

Click Copy Result to copy the joined text

Split Text by Delimiter

To break text into multiple lines:

Select Mode

Choose Split Text mode

Choose Method

Select Delimiter as the split method

Paste Text

Enter your text containing the delimiter

Select Delimiter

Choose the delimiter that separates your items

View Result

Each item appears on its own line in the output

Split by Character or Word Count

To break long text into fixed-length chunks:

Select Mode

Choose Split Text mode

Choose Method

Select Characters or Words as the split method

Set Count

Enter the number of characters or words per line

Paste Text

Enter your long text

View Result

The output shows text broken into equal-sized chunks

Using Options

Fine-tune your output with these options:

Trim Whitespace

Remove extra spaces from the start and end of each item

Remove Empty

Skip empty lines or items

Quote

Wrap each item with single quotes, double quotes, or backticks

Prefix/Suffix

Add custom text before and after each item

Quick Actions

Swap - Exchange input and output, automatically switching modes
Sample - Load example text to see how the tool works
Clear - Reset both input and output

Features

Join/Split Text offers a comprehensive set of features to handle various text transformation needs.

Multiple Delimiter Options

Choose from six preset delimiters or enter your own:

Comma (,)

Standard CSV format, SQL IN clauses

Semicolon (;)

European CSV format, some programming languages

Tab

TSV format, spreadsheet data

Newline

Convert between single and multiple lines

Pipe (|)

Unix commands, markdown tables

Space

Word separation

Custom

Any delimiter you need

Three Split Methods

In Split mode, choose how to break apart your text:

By Delimiter

Split wherever the delimiter appears

By Characters

Break into lines of fixed character length

By Words

Break into lines containing a set number of words

Flexible Output Formatting

Customize how each item appears in the output:

Quote wrapping - Surround items with single quotes ('item'), double quotes ("item"), or backticks (`item`)
Prefix and suffix - Add any text before and after each item
Trim whitespace - Clean up extra spaces automatically
Remove empty - Filter out blank items

Real-Time Preview

See results instantly as you type or change settings. No need to click a button - the output updates automatically with every keystroke or option change.

Instant Feedback: The tool processes your text in real-time, providing immediate visual feedback as you work.

Swap Function

Quickly reverse your transformation by swapping input and output. The tool automatically switches between Join and Split modes, making it easy to convert text back and forth.

Item Counter

Both input and output areas display item counts, so you always know how many items you're working with.

Frequently Asked Questions

What's the difference between Join and Split?

Join takes multiple lines and combines them into a single line with a delimiter between each item. Split does the opposite - it takes a single line and breaks it into multiple lines wherever the delimiter appears.

How do I create an SQL IN clause?

To format data for SQL:

Paste Values

One per line

Join Mode

Comma delimiter

Add Quotes

Single quote (')

Copy Result

'value1','value2','value3'

Can I use a multi-character delimiter?

Yes. Use the Custom delimiter input to enter any delimiter, including multiple characters like - or , (comma with space).

What does "Split by Characters" do?

It breaks your text into lines of a fixed character length. For example, if you set 50 characters, each output line will contain up to 50 characters. This is useful for formatting text to fit a specific width.

What does "Split by Words" do?

It breaks your text into lines containing a fixed number of words. For example, if you set 10 words, each output line will contain up to 10 words. This is useful for creating readable text blocks.

How do I convert CSV to a list?

Use Split mode with comma as the delimiter. Paste your CSV values, and each value will appear on its own line. Enable Trim whitespace to clean up any extra spaces.

Can I add brackets around my joined result?

Yes. Use the Prefix and Suffix options. For example, set Prefix to [ and Suffix to ] to wrap each item in brackets.

Is there a limit on text size?

The tool handles large amounts of text efficiently since all processing happens in your browser. However, extremely large texts (millions of characters) may slow down your browser.

Performance Note: For optimal performance, consider processing very large files in smaller chunks.

Is my data secure?

Yes. All text processing happens locally in your browser. Your data is never sent to any server, stored, or logged. You can verify this by using the tool offline after the page loads.

Privacy Guaranteed: Your text remains 100% private and secure on your device.