Read the web in the words you're learning

Kotiko is a browser extension. You read the news, a recipe or a forum as you always do, and here and there a word you chose appears in the language you're learning: perro, 猫, спасибо. Point at it, or tap it, to see what it means in your language and how it's said.

It works on pages in the languages you read, whichever they are. A reader in Madrid sees "perro" become 犬 on Spanish pages; a reader in Toronto sees "dog" become 犬 on English pages. Kotiko never assumes you read English.

Demo: Kotiko on a page (select to hide)

Three ways to start

Type a word and its meaning

Write perro = dog and it's yours. No account, no key, nothing leaves your browser.

Connect a free AI key

With a free OpenRouter key, ask in your own words: "how do you say cat in Japanese". Set up OpenRouter.

Use your own model or server

Another AI service, a model on your own computer, or your own Kotiko server with a Telegram bot.

How to start, step by step

Get Kotiko

• Coming soon to the Chrome Web Store Not listed yet
  Chrome, Edge, Brave and other Chromium browsers
• Coming soon to Firefox Add-ons Not listed yet
  Firefox

Until the store listings are live, you can install Kotiko from its source.

Private by design

• The text of the pages you read never leaves your browser.
• A word you add goes only to the AI service you chose, or to your own server.
• Kotiko has no servers of its own, no accounts, no ads and no tracking. Neither does this site.

Read the privacy policy: it takes about two minutes.

Meet Mira

Kotiko's mascot is a small black kitten. Kotiko bends котик (kotik), Russian for "kitty", the way a learner bends a word they're still getting to know. And Mira's name is a clue: in Spanish it means "look", in Latin "wonderful", in Russian "of the world" and "of peace". Read the whole story.

Get helpWhat a message means and what to do.

ContributeCode, translations and ideas are welcome.