Text Joiner Tool
Merge lists into a single text block with full control
Statistics
Join With
Item Wrapper
Output Wrapper
Process Options
What is a Text Joiner Tool?
A Text Joiner Tool (also called a line merger or list combiner) takes multiple separate lines of text and combines them into a single formatted string. Whether you need to create comma-separated values (CSV), add quotes around each item, or merge a list with custom separators, this tool handles it all automatically. If you have a block of text you need to break apart, use the Split Text Tool instead.
Instead of manually reformatting lists or using complex programming, simply paste your multi-line text, choose your formatting options, and get instant results. Perfect for data preparation, code generation, and text formatting tasks.
Features
Multiple Join Methods
Comma, space, pipe, newline, or custom separator.
Item Wrapper
Add quotes, brackets, or custom text around each item.
Output Wrapper
Surround entire output with brackets, parentheses, etc.
Line Numbering
Automatically add 1., 2., 3., prefixes to items.
File Upload & Download
Upload text files and download merged results instantly.
100% Private
All processing happens locally. No data uploaded.
Common Use Cases
Create Code Arrays
Convert lists into JSON arrays for JavaScript, Python, or SQL. Add quotes and brackets to create properly formatted string arrays ready to paste into code.
CSV Creation
Merge lists into comma-separated values for Excel, Google Sheets, or databases. Add quotes around items containing special characters or commas.
SQL IN Clauses
Format lists for SQL queries. Add quotes and join with commas to create: `WHERE id IN ('val1', 'val2', 'val3')` - ready to use in databases.
List Formatting
Transform plain lists into various formats: numbered lists, bulleted items, or inline text. Perfect for documentation, emails, and presentations.
Example: Create a String Array
Frequently Asked Questions
How do I join multiple lines into one?
Paste your multi-line list into the input box. Select your preferred Join With method (comma, space, etc.). The tool instantly combines all lines using that separator. For example, choosing 'Comma Space' will create: item1, item2, item3.
How do I add quotes around each item?
Use the Item Wrapper section. Enter " (double quote) in both the Prefix and Suffix fields. This wraps each line in quotes. Combined with comma separator, you'll get: "apple", "banana", "cherry" - perfect for creating string arrays or CSV data.
What's the difference between Item Wrapper and Output Wrapper?
Item Wrapper adds text around each individual line before joining (e.g., wrapping each in quotes). Output Wrapper surrounds the entire final result (e.g., [ at start, ] at end to create an array). Use both together to create: ["item1", "item2", "item3"].
Can I create a CSV format from a list?
Yes! Select 'Comma' or 'Comma Space' as the join method. If your items contain commas or special characters, use the Item Wrapper to add quotes around each item. This creates proper CSV format that Excel and other tools can read.
How does line numbering work?
Enable 'Add Line Numbers' in the Item Wrapper section to automatically prefix each item with 1., 2., 3., etc. This is useful for creating numbered lists or ordered sequences. The numbering happens before joining, so each item is numbered individually.
Is my data safe and private?
Yes, 100% safe. This tool runs entirely in your web browser using client-side JavaScript. Nothing you type or paste is ever sent to our servers or stored anywhere. It works completely offline after the page loads, making it secure for sensitive data like customer lists or private information.
Can I upload files to join?
Yes! Click the 'Upload' button to load text files (.txt, .md, .csv, .log, .json) directly. Each line from the file will be treated as a separate item to join. After processing, download the merged result back to your computer.
How do I remove duplicate items?
Enable the 'Remove Duplicates' checkbox in the Process Options section. This automatically filters out any repeated items from your list before joining, keeping only unique values. The statistics panel shows how many unique items were found.
Can I create a JSON array from my list?
Yes! Set the join method to 'Comma Space', add " to both Item Wrapper fields (Prefix and Suffix), and add [ to Output Wrapper Start and ] to Output Wrapper End. This creates a valid JSON array: ["item1", "item2", "item3"].
Can I see before and after side-by-side?
Yes! Click the 'Compare' button in the output area to enable comparison mode. This displays your original multi-line input on the left and the joined/formatted result on the right, making it easy to verify the transformation.