Does the tool handle Windows line endings (CRLF)?

Yes. Both Unix (LF) and Windows (CRLF) line endings are normalised automatically.

Text Line Tools — Sort, Deduplicate & Reverse Lines Online

Select Operation

Sort Order

Case-sensitive

Input0 lines • 0 chars

OutputNo output yet

Line-by-Line Text Processing

Developers, data analysts, and content creators constantly deal with lists that need sorting, cleaning, or deduplicating. These operations are trivial in code but tedious by hand — and opening a text editor or writing a script just to remove duplicates from a list is overkill. Paste your text, pick the operation, copy the result.

Common Use Cases

✓Deduplicating email lists, URL lists, or keyword lists
✓Sorting config file entries, imports, or dependencies alphabetically
✓Cleaning up CSV column values before import
✓Reversing ordered lists for bottom-up reading
✓Adding prefixes to a list of IDs, paths, or commands

All 6 Operations

📌Sort — A→Z, Z→A, by length, or numeric order
🔁Deduplicate — remove repeated lines, case-sensitive or not
↕️Reverse — flip the order of all lines
✂️Trim — strip leading/trailing whitespace per line
🗑️Remove Empty — delete blank lines from the output
➕Prefix/Suffix — add text to the start or end of every line

How It Works

Paste your text

Paste any text with multiple lines into the input box. Works with lists, CSV columns, code imports, URLs, and more.

Choose an operation

Select Sort, Deduplicate, Reverse, Trim, Remove Empty Lines, or Add Prefix/Suffix. Configure the options for your operation.

Copy the result

Click Process to apply the operation. The result appears instantly in the output box — click Copy to use it.

Frequently Asked Questions

What counts as a "line"?

Each line is separated by a newline character (Enter). Blank lines between content are counted as separate lines unless you use "Remove Empty Lines".

Is the deduplication case-sensitive?

By default yes — "Apple" and "apple" are treated as different lines. Toggle the case-insensitive option to treat them as duplicates.

What does numeric sort do?

Numeric sort orders lines by their leading number. "10" comes after "9", not before "2" as it would in alphabetical sort. Useful for sorting numbered lists, IDs, or version numbers.

Is my text stored anywhere?

No. All processing runs entirely in your browser using JavaScript. Your text is never sent to any server.

Tutorial

How to Remove Duplicate Lines Online

Sort, deduplicate, reverse, and filter lines of text with a single click — no code required.

Read guide →

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How to Use

1
Paste your text
Paste lines of text into the input area.
2
Choose an operation
Click Sort, Deduplicate, Reverse, Shuffle, or any other action.
3
Copy the result
The processed lines appear below. Click Copy to copy them to your clipboard.

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Frequently Asked Questions

Does the tool handle Windows line endings (CRLF)?: Yes. Both Unix (LF) and Windows (CRLF) line endings are normalised automatically.

Line-by-Line Text Processing

Frequently Asked Questions

What counts as a "line"?

Each line is separated by a newline character (Enter). Blank lines between content are counted as separate lines unless you use "Remove Empty Lines".

Is the deduplication case-sensitive?

By default yes — "Apple" and "apple" are treated as different lines. Toggle the case-insensitive option to treat them as duplicates.

What does numeric sort do?

Numeric sort orders lines by their leading number. "10" comes after "9", not before "2" as it would in alphabetical sort. Useful for sorting numbered lists, IDs, or version numbers.

Is my text stored anywhere?

No. All processing runs entirely in your browser using JavaScript. Your text is never sent to any server.

Select Operation

Popular Use Cases

Line-by-Line Text Processing

Common Use Cases

All 6 Operations

How It Works

Paste your text

Choose an operation

Copy the result

Frequently Asked Questions

What counts as a "line"?

Is the deduplication case-sensitive?

What does numeric sort do?

Is my text stored anywhere?

Related Articles

How to Remove Duplicate Lines Online

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Select Operation

Popular Use Cases

Line-by-Line Text Processing

Common Use Cases

All 6 Operations

How It Works

Paste your text

Choose an operation

Copy the result

Frequently Asked Questions

What counts as a "line"?

Is the deduplication case-sensitive?

What does numeric sort do?

Is my text stored anywhere?

Related Articles

How to Remove Duplicate Lines Online