LinguMark: Learn English Vocabulary Builder

What usually happens when you come across an unknown word while reading an article or watching a video on YouTube? You probably open a new tab, look up its translation, return to the page, and forget that word five minutes later. We developed LinguMark precisely to break this cycle. LinguMark is a language learning extension that runs entirely in your browser, allowing you to instantly translate, save words, and permanently memorize them using the scientific "Spaced Repetition" method, without ever leaving the webpage you are reading or the video you are watching. Highlighted Features -Instant Translation and Pronunciation: Right-click on any unknown word on any website to see its Turkish translation. Listen to their pronunciations in American and British accents, and translate your current sentence on the spot. -Web X-Ray: Color-code the texts on the page you are reading according to their difficulty levels (from A1 to C2). For example, filter only B2 and C1 level words to see exactly the words you need to focus on. -YouTube Subtitle X-Ray: Turn watching videos into an active language lesson. Follow videos with dual English and Turkish subtitles, and when you click on an unknown word, automatically pause the video and add the word to your dictionary with a single click. -Ready-made Oxford Library: Get one-click access to lists of thousands of the most frequently used words in English learning, grouped by CEFR levels, and import them into your own workspace. -Learning Center (Dashboard): We do not let you forget the words you have saved. Engrave words into your permanent memory with the spaced repetition system powered by the SM-2 algorithm, flashcards, matching games, and keyboard/typing practice. -Interactive Pronunciation Trainer: Practice speaking your saved words and calibrated CEFR sentences. It analyzes your pronunciation in real-time using native speech recognition, highlighting correct words in green and errors in red. Features a dynamic Siri-style voice waveform visualizer and inline translation toggles. Completely Local-First & Privacy-Focused (No Cloud) LinguMark respects your privacy and operates with a local-first architecture. Unlike other extensions, your data is not sent to remote servers or cloud databases; everything is kept directly in your own browser, on your device. -100% Offline: Even if you don't have an internet connection, you can access all your words and continue studying. -No Tracking: It does not ask for risky permissions like "activeTab", nor does it collect hidden data. Optional analytics (GA4) is turned off by default. Who Is It Ideal For? Those who want to take their English from B1/B2 level to C1/C2. Those studying for IELTS, TOEFL, YDS, YÖKDİL, or prep school exemption exams. Developers/professionals who read technical documents, articles, and news from foreign sources. Anyone who wants to naturally expand their vocabulary without interrupting their daily internet usage.