Lexigo is a free browser extension for Chrome, Edge and Firefox. Select any English word on a web page and a small tooltip shows its translation into your language, its meaning, its pronunciation and, if you ask, an AI explanation of what it means in that sentence. It works without an account; a free one keeps the words you save.
Lexigo opens right where you read, so you never leave the page to look a word up.
The word in any of 19 languages the moment you select it: Spanish, Chinese, Vietnamese, Turkish, Portuguese, Arabic and more.
Every sense of the word in plain English, its IPA and a button to hear it, from Lexigo’s own dictionary.
One click explains the sense meant in that exact sentence, in your language. It helps most with idioms and words with many meanings.
Keep the words worth learning, with the sentence you found them in. They come back in short reviews, right before you’d forget them.
Look up a phrasal verb or an idiom the same way. Select a whole sentence and a Translate button appears.
Articles, email, documentation, social media. Right-click a word for “Define with Lexigo”; in a PDF the word shows in a notification.
Since version 1.4.5 the tooltip works as soon as you install Lexigo. A free account adds everything that needs your words.
Clicked Save before signing up? Lexigo keeps the word in your browser and adds it to your account when you sign in.
Chrome shows this warning for any extension that can open on every website. Lexigo needs it for one reason: the tooltip has to appear on whatever page you are reading. The extension waits for you to select text. It doesn’t read the page, record the sites you visit or send anything until you select a word.
“Read and change all your data on all websites”
What it means: Lexigo can open its tooltip on any site. It reads only the word you select, plus the sentence around it when you ask for an AI explanation or save the word.
Lexigo uses your saved words and their sentence — never your browsing history.
| Permission | What Lexigo uses it for |
|---|---|
All websites<all_urls> | Opens the tooltip on the page you’re reading when you select a word. Firefox words the warning as “Access your data for all websites”. |
Notificationsnotifications | Chrome’s PDF viewer doesn’t let extensions show a tooltip, so a word you select in a PDF appears in a notification with “Save to Lexigo”. |
Tabs and scriptstabs · scripting · activeTab | Adds the tooltip to the tabs already open when you install or update Lexigo, so you don’t have to reload them, and opens the sign-in page. |
Right-click menucontextMenus | Adds “Define with Lexigo” when you right-click selected text. |
Storagestorage | Keeps your sign-in, your settings and the words you saved before signing in, on this computer. |
Sign-inidentity | Lets you sign in with Google or Microsoft in a Lexigo window. |
Alarmsalarms | Every 15 to 30 minutes, updates the number of words due on the Lexigo icon and sends the usage counts. |
Select a word, read the translation, ask the AI, save it — then review it later in the web app.
One extension, the same features everywhere. Your words sync through your Lexigo account.
Also from the Chrome Web Store: the first time, click “Allow extensions from other stores”.
Add to EdgePhones can’t run browser extensions. Create a free account there to review your words, and we’ll email you the link for your computer.
Start free on your phoneYes. The extension, the translations, the AI explanations and the reviews are free, with no plan or paywall.
No. Since version 1.4.5 you can select words and see their translation, meaning and pronunciation without signing in. A free account adds saving words, AI explanations, reviews and Lexigo Weekly.
Because the tooltip has to open on any page you read. Lexigo only reads the word you select, and the sentence around it when you ask the AI or save the word. It doesn’t record the sites you visit.
No. Lexigo never collects your browsing history or the pages you visit. It keeps only the words you save, their sentence and the page they came from, in your account.
Google Translate translates. Lexigo also explains what the word means in that sentence, lets you save it with its context, and brings it back in spaced-repetition reviews so you remember it.
Chrome, Microsoft Edge, Brave, Vivaldi, Arc and other Chromium browsers through the Chrome Web Store, and Firefox through Firefox Add-ons. Safari isn’t supported.
No, phones can’t run browser extensions. The Lexigo web app works on any phone, so you can review your words there and use the extension on your computer.
Into 19 languages, including Spanish, Chinese (Simplified and Traditional), Vietnamese, Turkish, Portuguese, French, German, Japanese, Korean, Russian, Arabic and Hindi. The words you look up are English.
Add Lexigo for free, select a word, and see it in your language. No account needed to start.