How to use the Duplicate Word Highlighter
Find repeated words in three steps:
1
Paste your text
Paste any text into the input area. Repeated words are highlighted in the preview panel in real time as you type.
2
Configure the threshold
Set the minimum repetition count (2×, 3×, 4×, or 5×) to highlight, the minimum word length, and toggle 'Ignore stop words' to skip articles, prepositions, and conjunctions.
3
Review the legend
The frequency legend below the preview shows every repeated word as a colour-coded pill with its exact count, sorted by frequency from most to least repeated.
When to use this tool
Use to identify and eliminate repetitive vocabulary before finalising any written work:
- →Reviewing essays and academic papers for overused words before final editing and submission
- →Identifying vocabulary repetition in blog articles and web copy to improve reading quality and engagement
- →Catching inadvertent word repetitions in technical documentation where precise and varied language is expected
- →Improving the variety of word choices in marketing copy and brand communications
- →Proofreading creative writing drafts to spot repeated nouns, verbs, and adjectives that weaken prose
- →Reviewing translated content where the same source word may have been rendered identically across different contexts
Frequently asked questions
Q:Are common words like 'the', 'and', and 'is' highlighted?
By default, the 'Ignore stop words' toggle is enabled, which skips a built-in list of 80+ common English stop words — articles (a, an, the), prepositions (in, on, at, for, with), conjunctions (and, or, but), pronouns (it, they, you), and auxiliary verbs (is, are, was, have, will). These words repeat naturally in any text and are not meaningful repetition signals. Disable the toggle to highlight every repeated word including stop words.
Q:How does the colour assignment work?
The tool assigns one of eight distinct highlight colours (amber, sky, rose, emerald, violet, orange, teal, pink) to each unique repeated word in order of frequency — the most-repeated word gets the first colour, the second-most-repeated gets the second, and so on. This means the same word always appears in the same colour throughout the text, making it easy to track at a glance. The colour assignment cycles if there are more than eight repeated words.
Q:What does the repetition threshold control?
The threshold sets how many times a word must appear before it is highlighted. At 2×, any word appearing twice or more is highlighted. At 3×, only words appearing three or more times are highlighted. Higher thresholds are useful for longer documents where some repetition is acceptable — you only want to see the most egregiously overused words rather than every word that appears more than once.
Q:Is the analysis case-sensitive?
No — words are compared case-insensitively, so 'Hello', 'hello', and 'HELLO' are all counted as the same word. This reflects how human readers perceive repetition. The original capitalisation is preserved in the highlighted output — only the comparison key is lowercased, not the displayed text.
Q:What does the minimum word length setting do?
The minimum length filter excludes very short words from repetition detection based on their character count. At the default of 3 characters, two-letter words like 'to', 'in', 'it', 'be', and 'at' are excluded even when stop-word filtering is disabled. Increase to 4+ characters to focus only on meaningful content words and ignore common short words entirely.
Q:Can I copy the text with highlights preserved?
The highlighted preview is a rendered HTML view — the colour highlights are CSS classes, not characters, so they cannot be copied with the highlights intact to a plain-text destination like Word or Google Docs. The Copy button copies the original plain text. Use the tool as a visual reference while editing your text in your primary editor, rather than trying to transfer the highlighted version.