Unique Word Extractor

Unique Word Extractor pulls a clean list of distinct words out of any text, in one of two modes: the words that appear exactly once, or the complete deduplicated vocabulary of the passage. The first mode surfaces the rare, one-off terms that give writing its texture, while the second gives you every distinct word used, with each one appearing a single time regardless of how often it was repeated.

It is useful for building vocabulary lists, measuring lexical variety, preparing spell-check or glossary candidates, and studying the range of language in a document. Language teachers extract vocabulary from reading passages, writers gauge how varied their word choice is, and analysts turn prose into a distinct-term list ready for further processing — all without manual sorting and deduplication.

All processing runs locally in your browser using JavaScript, so nothing is uploaded and no account is required. Paste your text, pick a mode, choose whether matching is case sensitive and whether to sort the output, and read the resulting list. Because the work stays on your device, confidential documents and study material remain completely private.

Features

• Extracts words that appear exactly once, or the full unique vocabulary.
• Deduplicates the vocabulary so every distinct word appears a single time.
• Offers case-sensitive matching when capitalisation should count as distinct.
• Sorts the output alphabetically or leaves it in order of appearance.
• Reports how many words were extracted and the total word count.
• Outputs a clean one-per-line list ready to copy or export as text.
• Runs entirely in your browser so documents stay private.

How to use Unique Word Extractor

1. Paste the text you want to analyse into the input box.
2. Choose a mode: words appearing once, or the full unique vocabulary.
3. Leave case matching off to treat differently capitalised forms as one word.
4. Keep Sort alphabetically on for a tidy, ordered list.
5. Read the extracted list and check the count in the stats panel.
6. Copy the list to your clipboard or download it as a TXT file.

Benefits

• Builds vocabulary and glossary lists from any passage in seconds.
• Measures lexical variety by revealing distinct versus repeated words.
• Surfaces rare one-off terms that shape a writer's voice.
• Prepares clean, deduplicated word lists for further processing.
• Keeps confidential documents private because nothing is uploaded.
• Saves the manual work of sorting and removing duplicate words.

The two modes answer different questions. Words-appearing-once mode highlights hapax terms — words used a single time in the whole text — which are a classic signal of vocabulary richness and a quick way to spot unusual or specialised language. Vocabulary mode instead collapses the entire text down to its distinct words, so a term used fifty times and a term used once each appear exactly once, giving you the true size and range of the vocabulary.

Case sensitivity changes what counts as distinct: with it off, a word at the start of a sentence groups with the same word mid-sentence, which is usually what you want for vocabulary work. Sorting alphabetically makes the list easy to scan and compare, while turning it off preserves the order words first appear, which can be useful when sequence matters. Pair this tool with a word-frequency counter when you also need the counts behind the vocabulary.