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A more natural and efficient way to learn vocabulary and languages. Turn your browser into a language notebook and pick up new words through everyday reading.

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New: Language immersion

Turn your browser into a
language immersion zone

While you browse in your native language, NeonLingo predicts and swaps in the words you're ready to learn. No rote memorization, just natural acquisition.

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neonlingo.com

The weather is great today. I want to take a walk in theparkparquebooklibrocoffeecafépark

The only way humans acquire language
is by receivingcomprehensible input

Stephen Krashen

Professor Emeritus at the University of Southern California and renowned language educator

Krashen's i + 1 theory and NeonLingo

Professor Krashen argues that true acquisition happens only when learners receive language input slightly above their current level (i+1). NeonLingo is designed around exactly this principle.

A dual-engine learning model

Native-language pages Familiar context in your native language (i) + substituted foreign words (+1) = natural vocabulary growth Foreign-language pages Unfamiliar foreign content (i+1) + on-demand translation support = input you can understand (i)

Two input modes,one learning loop

Inspired by Krashen's theory of comprehensible input, NeonLingo turns both native-language and foreign-language pages into learning material that fits your level.

Mode 1: Native-language pages

Language immersion
Pick up new words inside familiar context

Smart targeting

Based on your progress, it surfaces vocabulary that matches what you're ready to learn.

Context-based memory

Strong native-language context helps you infer and retain the meaning of foreign words naturally.

Frictionless learning

No separate vocab app required. Browsing the web and reading the news becomes language practice.

AI is advancing rapidly, and many companies are investing heavily in new tecnologías.


To stay competitive, we need to keep learning new habilidades.

Mode 2: Foreign-language pages

Immersive reading
Make reading in another language feel smooth and natural

Instant selection translation

When you hit an unfamiliar word, just select it and get a precise translation right away.

Automatic wordbook

Every word you look up is saved automatically, so your personal vocabulary list keeps growing in the background.

Review with highlights across the web

When a word you've learned appears again on any page, it is highlighted automatically to reinforce memory.

Muchos investigadores creen que el inputcomprensiblees una de las claves para aprender un idioma de forma natural


Los estudiantes suelen avanzar cuando reciben input apenas por encima de su nivel actual decompetencia

What users are saying

People from different backgrounds are using NeonLingo to grow their language skills.

As a developer, I read a huge amount of English documentation every day. NeonLingo makes unfamiliar words feel much less intimidating. The selection translation is smooth, and automatic saving removes a lot of manual organization.

AOKO
Developer

Language immersion feels almost magical. I usually read tech blogs in my native language, and NeonLingo swaps technical terms into English automatically. I end up picking up natural expressions without feeling like I'm studying.

Sarah
International student

I'm preparing for IELTS, and the review feature is excellent. Words I've looked up before get highlighted when they appear again on other pages. Seeing them repeatedly in different contexts is far more effective than rote memorization.

Olivia
Test prep student

Ready to change the way you
learn languages?

Join tens of thousands of learners and turn every browsing session into a chance to expand your vocabulary.

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