An AI translation extension for YouTube and the web that remembers what you look up.
Turn web pages bilingual in one click, get dual subtitles on YouTube, click a word or select a paragraph to translate, and read PDFs the same way. Translation comes from a large language model, even on the free plan, and words you look up light up when they come back.
Echo Translate is a browser extension, so it can’t be installed on a phone. Open this address on your computer:
echo-translate.com Get started Free · No sign-up Open the welcome page againThree steps once it’s installed
Press Alt+A and the page shows both languages; press it again for the original.
Turn on dual subtitles and click any word in them to see what it means in this line.
Select or click a word for its meaning in this sentence; select a sentence or a paragraph for its translation. Words you’ve looked up light up when they show up again.
Click a word in YouTube subtitles
Dual subtitles pause the video when you hover. Words you look up light up when they show up in an article.
to keep putting off something you should do
Here: he knows the work is waiting but keeps delaying it.
Researchers found that students who procrastinate sleep less and feel more stressed before exams, and that a simple plan can help.
to keep putting off something you should do
Web pages and PDFs: select to translate
A whole page, a paragraph or a single word.

to cook (coffee beans, nuts) with dry heat
Here: the beans were dry-heated until dark and fragrant, then ground.
Reading the web
Press Alt+A to see the whole page in two languages. Select a word and a small button appears beside it; click it for the meaning in this sentence.

attention (mechanism)
Reading PDFs
Online and local PDFs both work, and files aren’t uploaded.
to keep putting off something you should do
So I decided to procrastinate for just one more day.
attention (mechanism)
Looked-up words are saved to your word book
Each word is saved with its sentence, and you can export to CSV or Anki.
Free and Pro
No sign-in. Free for good.
100 lookups · 20 sentence translations · your 50 most recent words in the word book
Add the extension Add the extension Extension installed Extension installed Install it on a computerEcho Translate is a browser extension, so it can’t be installed on a phone. Open this address on your computer:
echo-translate.comCancel anytime; Pro lasts to the end of the period.
- Full-page translation, fair use
- Every word in your word book, all visible
- Word book synced across computers
FAQ
Can it translate a whole web page?
Yes. Press Alt+A to see the page in two languages, and again to show the original. The free plan has a daily allowance of full-page translations; Pro is fair use.
How is it different from other translation extensions?
Translations come from a large language model and follow the meaning of the sentence, not word by word. Words you’ve looked up are saved and light up when they show up again on another page, in a video or in a PDF.
Does it work with videos?
Yes, with YouTube videos that have CC subtitles: click any word in the subtitles and show them in two languages or only the original. Videos without CC subtitles aren't supported yet.
What are the limits on the free plan?
100 word lookups and 20 sentence translations a day, plus a daily allowance of full-page translations. Your word book shows the 50 most recent words; older ones stay saved in your browser and come back when you upgrade. All your words are highlighted when they come up again.
What is sent when I look up a word?
The word you selected and the sentence around it, so the meaning fits that sentence. The page address isn't sent, and PDFs are never uploaded. Privacy policy
Install it and go. No sign-up.
Echo Translate is a browser extension, so it can’t be installed on a phone. Open this address on your computer:
echo-translate.com Open the welcome page again