Yes, Linemark has a free plan that includes up to 5,000 characters per month, up to 300 flashcards, and full access to the browser extension and learning system. A Premium plan is available at $4.99/month for unlimited usage.

What browsers does Linemark support?

Linemark works with Chrome (Firefox soon).

Does Linemark work on YouTube?

Yes, Linemark works with YouTube subtitles. You can highlight any word in a YouTube subtitle to translate it and save it to your flashcards.

How many languages does Linemark support?

Linemark supports over 101 languages for translation.

How does Linemark help me learn a language?

Linemark uses a three-step immersive learning method: highlight a word on any website or YouTube subtitle, get an instant translation with context, then save it to smart flashcards. You review your saved words using spaced repetition to maximize long-term retention.

Will Linemark slow down my browser?

No. Linemark is lightweight and only activates when you highlight a word. It has no impact on page load times or browsing performance.

Is my browsing data private?

Yes. Linemark does not track your browsing history. Only the words you choose to translate and save are stored in your account.

Learn languages effortlessly

Learn Any Language
While You Browse
the Web

Linemark is a free browser extension for language learners. Highlight any word on any website or YouTube subtitle to get an instant translation, then save it to your personal flashcard deck. Review with spaced repetition and track your vocabulary growth — all without leaving your browser.

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medium.com/article/learning-languages

serendipity

English → Spanish

serendipia

pleasant surprise

Words saved

1,247

Streak

14 days

How Linemark Works

Learn Any Language in 3 Simple Steps

Learning a new language shouldn't feel like work. Our extension seamlessly integrates into your browsing experience.

1

Highlight Any Word

Select any word or phrase on any website or YouTube subtitle while browsing the internet

2

Get Instant Translation

Get instant, context-aware translations powered by advanced AI technology

3

Review with Smart Flashcards

Save translations to your personal flashcard deck and master vocabulary with spaced repetition

Packed with Features

Everything You Need to
Master Any Language

Powerful features designed by language learners, for language learners.

Instant Translation

Get translations in milliseconds. No waiting, no page reloads.

Smart Flashcards with Spaced Repetition

Spaced repetition algorithm helps you remember words longer and learn faster.

Context-Aware Translation

Our AI tries to understand context to provide the most accurate translations.

Learn from YouTube Subtitles

Highlight words in YouTube subtitles, translate them, and save to your vocabulary.

Progress Tracking

Detailed analytics show your learning journey and milestones.

See it in action

See Linemark
in Action

Watch how effortlessly you can build your vocabulary while browsing any website or watching YouTube. Highlight, translate, and save to flashcards in seconds.

Simple Pricing

Everything Included, Free During Beta

We're in early access. All features are completely free while we build and improve Linemark together.

Early Access Beta

Beta Access

Full access, no credit card

$0/month

Up to 5,000 characters translated per month
Unlimited flashcards
Browser extension with YouTube support
Access to spaced repetition learning system

A note from our team: Linemark is currently in beta. The unlimited access you see today is our way of saying thank you for being an early adopter and helping us shape the product. Paid plans will be introduced in a future update — and you'll always get fair notice before anything changes.

No credit card required

Full access during beta

FAQ

Frequently Asked Questions

Everything you need to know about Linemark and learning languages with our browser extension.

Start Building Your
Vocabulary Today

Build vocabulary effortlessly while browsing the web. Start for free — no credit card required.