Can I join lines into a comma-separated list?

Yes. Select the 'Comma' preset (which uses ', ' — comma followed by a space) and click Join Lines. Each line from your input becomes one item in a clean comma-separated list. This is perfect for creating CSV rows, JavaScript arrays, or comma-delimited values for spreadsheets and databases.

How do I handle blank lines?

The 'Remove empty lines' checkbox is enabled by default, which automatically strips blank lines before joining. If you need to preserve blank entries (for example, to keep placeholder positions in a data set), simply uncheck the option and empty lines will be included as empty strings between separators.

Can I add a prefix and suffix to each line before joining?

Yes. The tool includes dedicated Prefix and Suffix input fields. For example, set prefix to ' ' and suffix to ' ' to wrap each line in HTML list-item tags before joining. You can also use the Wrap field to enclose each line in quotes, brackets, or any pair of characters — perfect for generating code arrays or SQL values.

Yes, the Text Joiner is completely free with no limitations. There are no hidden charges, no premium tiers, and no sign-up required. You can join unlimited text as many times as you need. CoderDesign provides this tool as a free resource for developers, writers, data analysts, and anyone who needs to merge lines of text.

Absolutely. All processing happens entirely in your browser using JavaScript — nothing is sent to any server. Your text is never stored in any database, logged, or shared with any third party. You can verify this by disconnecting from the internet after the page loads and the tool will continue to work perfectly.

Can I use custom multi-character separators?

Yes. Click the 'Custom' pill and type any string into the custom separator field. Multi-character separators like ' :: ', ' | ', ' → ', or even longer strings like ' ' are fully supported. The tool uses your exact string between every pair of joined lines with no modification.

Free Text Joiner Online – Merge & Combine Lines

Join multiple lines of text into one string with any separator — comma, pipe, space, tab, newline, or custom. Perfect for creating CSV data, code arrays, SQL IN clauses, and merged lists. Free, private, and instant.

100% PrivateInstantAny DeviceNo Sign-Up

Input Text (one item per line)

.txt, .csv, .tsv, .log, .md

Separator

Trim linesRemove empty lines

Prefix per line

Suffix per line

Wrap each line

Added to both sides

Output

How to Join Text Lines Online

Four simple steps to merge any lines of text into a single string using CoderDesign's free Text Joiner.

Paste or Upload Your Lines

Type, paste, or upload a .txt file containing the lines you want to join — one item per line.

Choose a Separator

Pick a preset separator pill (comma, semicolon, pipe, space, tab, newline) or click Custom and type any multi-character delimiter.

Configure Options

Optionally trim lines, remove blanks, add a prefix/suffix to each line, or wrap each item in quotes or brackets.

Copy or Download the Joined Text

Click Join Lines to merge everything. Copy the result to your clipboard or download it as a .txt file.

Why Use Our Free Text Joiner?

A powerful, privacy-first text merging tool with flexible separators, wrapping options, and zero limitations — built for developers, writers, and data analysts.

Flexible Separators

Join lines with comma, pipe, space, tab, newline, or any custom multi-character string — no limit on separator length or complexity.

Instant Joining

Merge thousands of lines in milliseconds. The tool processes large text files instantly, entirely in your browser with zero lag.

100 % Private

Everything runs client-side in JavaScript. Your text is never sent to any server, stored, logged, or shared with anyone.

Developer-Friendly

Create JavaScript arrays, Python lists, CSV rows, SQL IN clauses, and more — use wrap, prefix, and suffix to format each item perfectly.

Works on Any Device

Fully responsive layout optimized for desktop, tablet, and mobile. No app install required — just open and join.

No Sign-Up Required

Completely free, no registration, no email, no limits. Use the tool as many times as you need, forever.

Real-World Use Cases

See how the Text Joiner handles common merging tasks — from CSV creation to SQL clause generation.

Create CSV Data

Turn a column of values into a single comma-separated row — ready for spreadsheets, databases, or APIs.

Input

Alice
Bob
Charlie

Output

Alice, Bob, Charlie

Build Code Arrays

Wrap each item in quotes and join with commas to create JavaScript, Python, or JSON arrays instantly.

Input

red
blue
green

Output

"red", "blue", "green"

Merge Paragraphs

Combine separate lines into a single continuous paragraph by joining with a space.

Input

Line 1
Line 2
Line 3

Output

Line 1 Line 2 Line 3

SQL IN Clauses

Wrap IDs in single quotes and join with commas to build SQL WHERE IN clauses in seconds.

Input

101
102
103

Output

'101', '102', '103'

Create Pipe-Delimited Data

Join fields with pipe separators for log files, data exports, or custom data formats.

Input

field1
field2
field3

Output

field1 | field2 | field3

Frequently Asked Questions

The Text Joiner takes multiple lines of text and merges them into a single string using any separator you choose — comma, semicolon, pipe, space, tab, newline, or any custom multi-character delimiter. It is the reverse of splitting text: you start with one item per line and end with all items joined together.

You can use any separator. The tool provides seven quick presets — comma, semicolon, pipe, space, tab, newline, and a custom input field. The custom field accepts any string including multi-character separators like ' :: ', ' → ', ' -- ', or even HTML tags. There is no limit on separator length.

Yes. Select the Comma preset and click Join Lines. Each line becomes one item in a clean comma-separated list — perfect for creating CSV rows, JavaScript arrays, or comma-delimited values for spreadsheets and databases.

The 'Remove empty lines' checkbox is enabled by default, stripping blank lines before joining. Uncheck it if you need to preserve blank entries — empty lines become empty strings between separators.

Yes. Use the Prefix and Suffix input fields to prepend and append any string to every line. For example, set prefix to '<li>' and suffix to '</li>' to wrap each line in HTML tags. Use the Wrap field to enclose each line in quotes, brackets, or any pair of characters.

Absolutely. Click the Custom pill and type any string into the custom separator field. Multi-character separators like ' :: ', ' | ', ' → ', or even longer strings are fully supported. The tool uses your exact string between every pair of joined lines.

Yes. All processing happens entirely in your browser using JavaScript — nothing is sent to any server. Your text is never stored, logged, or shared. You can verify this by disconnecting from the internet after the page loads.

The Text Joiner is completely free with no limitations. No hidden charges, no premium tiers, no sign-up. Join unlimited text as many times as you need — CoderDesign provides this as a free resource for developers, writers, and data analysts.

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