History

11 snapshots

Tracking since Apr 1, 2026.

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Date	Users	Rating	Reviews	Version
Apr 1, 2026	49	5.00	2	0.2.0
Apr 9, 2026	51	5.00	2	0.2.0
Apr 19, 2026	53	5.00	2	0.4.1
Apr 25, 2026	55	5.00	2	0.4.1
May 2, 2026	53	5.00	2	0.4.1
May 9, 2026	54	5.00	2	0.4.1
May 13, 2026	60	5.00	2	0.4.2
May 19, 2026	61	5.00	2	0.4.2
May 25, 2026	58	5.00	2	0.4.3
Jun 1, 2026	63	5.00	2	0.4.3
Jun 8, 2026	62	5.00	2	0.4.3
Now	72	5.00	2	0.4.3

Changelog

May 9, 2026

short_description

Highlight unknown words on any website. 12 languages. Flashcards, spaced repetition, word frequency. No account needed.

Highlight unknown words on any website and YouTube. 12 languages. Flashcards, spaced repetition, word frequency. No account needed.

May 9, 2026

name

Vocabulary Highlighter — Learn Words While You Read

Vocabulary Highlighter — Learn While Reading & Watching

Apr 9, 2026

description

Learn English vocabulary by reading websites you already love — Reddit, Medium, news, documentation, anything.

HOW IT WORKS
Open any webpage → click "Activate" → every word gets color-coded. Green = you know it. Red = you don't. Click an unknown word, press Enter — it's added to your dictionary. The extension remembers.

Over time, you see fewer red words. That's your progress.

FLASHCARDS WITH SPACED REPETITION (NEW in 0.2.0)
Unknown words you encounter while reading automatically become flashcards. Practice them with a 3-button rating system (Don't know / Kinda know / Know it). The built-in spaced repetition algorithm schedules reviews at optimal intervals so you remember words long-term.

WORD FREQUENCY TRACKING
See which unknown words appear most often across everything you read. Filter by time period: last 7 days, 30 days, 90 days, or all time. Focus on high-frequency words first — they give you the biggest reading comprehension boost.

QUICK SETUP QUIZ
Mark 1,500 common English words you already know in batches of 150. Takes a few minutes. After that, the extension only highlights words you actually need to learn.

CLICK-TO-TRANSLATE
Click any word on the Learn Words page or inside flashcards to instantly see its definition and part of speech. No need to open a separate dictionary.

FEATURES
- Color-coded word highlighting on any website
- Flashcards with spaced repetition (SM-2 algorithm)
- Top unknown words ranked by frequency
- Inline definitions from free dictionary API
- Quick setup quiz (1,500 common words)
- Customizable highlight colors and opacity
- Import/export word lists (CSV)
- Reading streaks and daily stats
- Cross-device dictionary sync via Chrome

PRIVACY
No account. No cloud servers. No tracking. Your dictionary syncs through your Chrome profile — only you can see it. All processing happens in your browser.

WHO THIS IS FOR
English learners (intermediate+) who want to build vocabulary from real content instead of textbook word lists. Works best when you read every day — articles, Reddit threads, documentation, blogs.

WHAT'S NEW IN 0.2.0
- Flashcards with spaced repetition
- Click-to-translate on Learn Words page
- Time period filters (7d / 30d / 90d / all time)
- Redesigned popup with compact stats
- Quick setup quiz expanded to 1,500 words

Learn vocabulary in 12 languages by reading websites and watching YouTube — Reddit, Medium, news, documentation, videos, anything.

HOW IT WORKS
Open any webpage → click "Activate" → every word gets color-coded. Green = you know it. Red = you don't. Click an unknown word, press Enter — it's added to your dictionary. The extension remembers.

Over time, you see fewer red words. That's your progress.

WORKS ON YOUTUBE TOO (NEW in 0.4.0)
Turn on CC subtitles and learn vocabulary while watching videos. Same dictionary across reading and watching — a word you learn on a website won't be highlighted on YouTube and vice versa.

CROSS-LANGUAGE VOCABULARY (NEW in 0.4.0)
Learning German after English? Words you already know from English (like "system", "problem", "information") are automatically detected and shown in a subtle yellow — so you can focus on truly new words.

MULTI-LANGUAGE SUPPORT
Learn English, Spanish, French, German, Italian, Portuguese, Russian, Turkish, Arabic, Hindi, Japanese, or Korean. Switch languages instantly from the popup — each language has its own dictionary, stats, and flashcard deck. Translations powered by MyMemory API with Google Translate fallback.

ANKI-STYLE FLASHCARDS
Words you encounter 50+ times while reading automatically become flashcards. Practice them with Anki-style buttons showing exact intervals: Again (1d) / Good (3d) / Easy (7d). Words graduate to "learned" after multiple successful reviews — no premature deletion. Built-in SM-2 spaced repetition algorithm.

WORD FREQUENCY TRACKING
See which unknown words appear most often across everything you read. Filter by time period: days, weeks, months, or years. Delete junk words with one click. Focus on high-frequency words first — they give you the biggest reading comprehension boost.

QUICK SETUP QUIZ
Mark common words you already know in batches of 150. Hover any word to see its translation. Already-known words are pre-selected. Available for English, Spanish, French, German, Italian, and Russian (1,500 words each).

CLICK-TO-TRANSLATE
Click any word to instantly see its translation or definition. English words get dictionary definitions; other languages get translations to your native language. Google Translate link as fallback.

FEATURES
- 12 languages with instant switching
- Works on websites AND YouTube subtitles
- Cross-language word detection (know it from another language? we'll show it)
- Anki-style flashcards with SM-2 spaced repetition
- Top unknown words ranked by frequency (50+ encounters)
- Inline translations and definitions
- Quick setup quiz with hover translations (1,500 words per language)
- Customizable highlight colors
- Import/export word lists (CSV)
- Reading streaks, daily stats, and learning charts
- Cross-device dictionary sync via Chrome
- Smart script detection (Japanese doesn't highlight English text, etc.)

PRIVACY
No account. No cloud servers. Your dictionary syncs through your Chrome profile — only you can see it. Word lookups use free translation APIs. All highlighting happens in your browser.

WHO THIS IS FOR
Language learners (intermediate+) who want to build vocabulary from real content instead of textbook word lists. Works best when you read and watch every day — articles, Reddit threads, YouTube videos, documentation, blogs.

WHAT'S NEW IN 0.4.0
- YouTube subtitle highlighting — learn while watching
- Cross-language vocabulary detection (words known from other languages shown in yellow)
- Anki-style flashcard buttons with interval labels (Again/Good/Easy)
- Words graduate after 21+ day intervals (no instant deletion)
- Smart word filtering: only 50+ encounter words enter flashcards
- Learning chart (30-day bar graph) and streak counter on flashcards page
- Language selector on flashcards and review pages
- Quiz: hover-to-translate and pre-selection of known words
- Delete button (✕) to remove junk words from review
- YouTube widget reminder to turn on subtitles

Apr 9, 2026

short_description

Highlight unknown English words on any website. Flashcards, spaced repetition, word frequency. No account needed. 100% private.

Highlight unknown words on any website. 12 languages. Flashcards, spaced repetition, word frequency. No account needed.

Permissions & access

Permissions: storageactiveTabscriptingcontextMenustabs
Host access: None declared

Screenshots

Vocabulary Highlighter — Learn While Reading & Watching screenshot 1

Vocabulary Highlighter — Learn While Reading & Watching screenshot 2

Vocabulary Highlighter — Learn While Reading & Watching screenshot 3

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