Top 5 dictionary browser extensions you should try

Matthew Adams
by Matthew Adams
Windows & Software Expert
Affiliate Disclosure
Share this article:

  • Most online dictionaries are not easy to use, especially when you have to navigate from one tab to the other.
  • You can easily install a dictionary extension in your browser that will allow you to translate any unknown word.
  • We recommend that you take a closer look at our Windows 10 Hub, for more interesting solutions and articles.
  • Bookmark our special Web Browsers Hub if you want to know more about your browser.
laptop working stock
Strugling with your current browser? Upgrade to a better one: Opera

You deserve a better browser ! 350 million people use Opera daily, a fully-fledged navigation experience that comes with various built-in packages, enhanced resource consumption and great design.
Here's what Opera can do:

  • Easy migration: use the Opera assistant to transfer exiting data, such as bookmarks, passwords, etc.
  • Optimize resource usage: your RAM memory is used more efficiently than in other browsers
  • Enhanced privacy: free and unlimited VPN integrated
  • No ads: built-in Ad Blocker speeds up loading of pages and protects against data-mining
  • Gaming friendly: Opera GX is the first and best browser for gaming
  • Download Opera

If you’ve got a Web page open with some heavy jargon in it, it might be handy to have a good online dictionary to use. Then you can look up some of the jargon for further clarification.

There are numerous dictionary extensions available for the foremost browsers that provide you with a quick dictionary.

In this article, we are exploring some of the best dictionary browser extensions for Chrome, Firefox, and Opera.

Quick tip:

Browser extensions are the bread and butter of all major browsers, allowing users to customize and improve their browsing experience. However, they often trade privacy for the sake of versatility. Not the case with Opera.

The Opera Browser, built on the Chromium project basis, allows for all extensions Google Chrome offers. However, there are also some great extensions that you can add, such as Dictionary, ImTranslator: Translator, Dictionary, TTS, and Lingvanex – Translator and Dictionary.

The extensions can be added to Opera for free and as they are based on AI you will have a fast and accurate translation in almost 100  languages.



Browse the Internet freely and use any of the amazing dictionary extensions this browser has, for free! Read foreign webpages and get access to translations in no time!

Best dictionary extensions to use while browsing the Internet

Google Dictionary

This is an extension developed by Google for its Chrome browser. Consequently, the add-on integrates with the Google search engine to give you definitions.

The great thing about this extension is that you can double-click any word to look it up in the dictionary. That opens the bubble shown in the shot directly below.

This also works with foreign languages as a translation tool. Alternatively, you can click the Google Dictionary toolbar button to enter text into a dictionary search box instead. It can also save words that you look up.

google dictionary extension

Dictionary Pop-Up is an exclusive Firefox add-on you can add to the browser from this Web page. This is pretty similar to Google Dictionary, except that it’s integrated with

As such, you can double-click words in a page to open the definition bubble shown in the snapshot directly below and then click More to open

The good thing about this add-on is that it also includes options for you to customize the pop-up bubble’s fonts with.

dictionary pop-up extension

Dictionary Tooltip

Dictionary Tooltip is another great Firefox dictionary add-on available at this page, and you can also add it to Chrome from here.

Like Google Dictionary and Dictionary Pop-Up, you can double-click words on a page to look them up; or you can also select the text and press Ctrl + Shift + K to open the window directly below.

However, what really elevates this add-on above some of the others is that it enables you to look up words with multiple dictionaries by clicking Show Dictionaries and then selecting alternatives from the drop-down menu.

Restoro Scan
Click Start Scan to find Windows issues.
Restoro Fix
Click Repair All to fix issues with Patented Technologies.
Run a PC Scan with Restoro Repair Tool to find errors causing security problems and slowdowns. After the scan is complete, the repair process will replace damaged files with fresh Windows files and components.

The note tool on its window can also come in handy.

dictionary tooltip extension Instant Dictionary

This is a Google Chrome dictionary extension integrated with You can look up words by double-clicking them on the page much the same as the others.

However, you can also select the text and then press the D button to automatically enter a word in the extension’s search box. Furthermore, the extension also includes extra configuration options for trigger keys and the font size.

Dictionary Anywhere (Google Translate Anywhere)

This is a great dictionary extension for both Opera and Firefox. You can add it to Opera, or you can add it to Firefox from this page. Dictionary Anywhere enables you to select words in pages for definitions. However, unlike some of the others, it’s also a translation tool.

When you click the extension’s button, it will open the window below that provides a definition and includes translate options.

Furthermore, you can also click Search to look up the word in the Google search engine instead. In addition, it includes a Copy button that you can press to copy text to the Clipboard.

google translate extension

With these dictionary tools, you can now quickly look up jargon in website pages open in Chrome, Firefox, or Opera.

Those that include translate options can also help translate pages, but there are better translation extensions available.

Editor’s Note: This post was originally published in October 2016 and has been since revamped and updated in August 2020 for freshness, accuracy, and comprehensiveness.

idee restoro Still having issues? Fix them with this tool:
  1. Download this PC Repair Tool rated Great on (download starts on this page).
  2. Click Start Scan to find Windows issues that could be causing PC problems.
  3. Click Repair All to fix issues with Patented Technologies (Exclusive Discount for our readers).
Restoro has been downloaded by 0 readers this month.
Editor's Note: This article was originally published in October 2016 and was revamped and updated in October 2020 for freshness, accuracy, and comprehensiveness.