✦ Text Tool

Duplicate Word Remover

Remove duplicate words, duplicate lines, or repeated phrases from any text. Highlights what was removed, shows a full duplicate report, and keeps your original order.

Input Text
Cleaned Output
0
Total Words
0
Duplicates Removed
0
Unique Words Kept
0%
Size Reduction
Duplicate Words Found

Advanced Duplicate Removal

Three modes, live highlighting, and full duplicate reporting

🗑️

3 Removal Modes

Remove duplicate words across the whole text, duplicate lines, or just highlight repeated words without removing them.

🎨

Visual Diff

The highlight panel shows removed duplicates in red strikethrough and kept words in green — see exactly what changed.

📋

Duplicate Report

A full list of every duplicate word found, with the count of how many times it was repeated, shown as pills below the output.

⚙️

Smart Filtering

Skip common filler words, set minimum word length, choose case sensitivity, and control scope (global, per sentence, per paragraph).

How It Works

Clean duplicates in seconds

1

Paste your text

Type or paste any text into the left panel — it works for any language or format.

2

Choose a mode

Pick "Duplicate Words", "Duplicate Lines", or "Highlight Only" from the tabs.

3

Configure options

Set case sensitivity, scope, minimum word length, and which common words to skip.

4

Copy or download

Copy the cleaned output to your clipboard or download it as a .txt file.

Frequently Asked Questions

Does it preserve word order?
Yes — duplicate removal keeps the first occurrence of each word in its original position and removes all subsequent duplicates. The original order of unique words is fully preserved.
What are "common words"?
Common words (also called stop words) are frequent filler words like "the", "a", "is", "and", "or", etc. These words appear in almost every sentence, so it usually makes sense to skip them when deduplicating.
What's the difference between duplicate words and duplicate lines?
Duplicate word mode scans all words in the text and removes repeated words wherever they appear. Duplicate line mode treats each line as a unit and removes lines that are identical to an earlier line — useful for cleaning lists.
Can I use this for deduplicating CSV or JSON data?
For line-based data (one item per line), yes — the "Duplicate Lines" mode works well. For structured CSV/JSON, we recommend a dedicated data tool.
Does the tool send my text to a server?
No — all processing is done 100% in your browser using JavaScript. Your text never leaves your device.
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