Word Highlighter
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Create a list of words and phrases. See them highlighted on every page you visit.

The extension can be used to expand your vocabulary. When you learn a new word, add it to Word Highlighter, and you won't forget the word because it will be highlighted every time you encounter it. Word Highlighter is smart about how it matches words on the page with words in the dictionary. It understands that "cherry" and "cherries", "aprender Español" and "aprendemos Español" are the same. Smart matching is supported in English, Spanish, French, Italian, Dutch, Norwegian, Portuguese, Russian and Swedish. - Tracks words and definitions. Words can be added either in the "Words" tab of the extension popup, or by selecting the word and clicking "Add word" in the context menu. - Highlights tracked words on all pages. - Displays a tooltip with the definition when you hover over a highlighted word. - Displays info about the number of highlighted words on the page. - Supports exporting words to and importing from csv and json. - Supports customizing highlight color. - Supports having multiple groups of words with different settings. - Supports disabling all highlights or specific groups on selected pages. - Tracks how often each word was found. - Respects your privacy - it doesn't send any of your data anywhere. - Free and open-source.

4.2 out of 511 ratings

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AleksNov 15, 2023


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Sushant DotelJul 26, 2023

Works as expected. Unlike some other highlighters I used, it also gives word meanings on hover. Csv import is nifty. Thank you!

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ME mrJun 27, 2023

very useful, thank you!


  • Version
  • Updated
    October 24, 2021
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  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.


Word Highlighter has disclosed the following information regarding the collection and usage of your data.

Word Highlighter handles the following:

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This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes


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