Kitsuneru av Olexify

<strong>No setup. Press play and study.</strong>

Kitsuneru puts native subtitles with instant dictionary definitions on top of the videos you already watch. Open YouTube and it just works - pick your track and go. Watching anime? Find subs without leaving the page.

Then hover a word. No pausing, no tab switching, no copy-paste into a dictionary.

Watching foreign video with <em>English</em> subtitles never really worked. What you actually needed was <em>native</em> subtitles with definitions on demand. That's the whole idea.

<strong>Works on anime sites, YouTube, Netflix, Crunchyroll, local video files and most HTML5 players - on Firefox for desktop and Firefox for Android.</strong>

<strong>Free. No account. No subscription. No telemetry.</strong>

🦊 WHAT YOU CAN DO

<ul>
<li><strong>Interactive subtitles</strong> - hover any word for readings, definitions, part of speech, difficulty and frequency.</li>
<li><strong>Subtitle overlay</strong> - load your own .srt, .vtt or .ass, and restyle, reposition and resync it.</li>
<li><strong>Subtitle search</strong> - Jimaku, OpenSubtitles, SubDL and Kitsunekko, without leaving the video.</li>
<li><strong>Precision sync</strong> - offsets from ±10 ms to ±1000 ms, saved per show.</li>
<li><strong>Study Mode</strong> - the current line as a vocabulary session; mark words you know and they stop drawing your eye.</li>
<li><strong>Anki mining</strong> - word, reading, definition, sentence, screenshot, audio and video clip, through AnkiConnect.</li>
<li><strong>Custom dictionaries</strong> - Yomitan .zip and .json, plus plain .tsv wordlists.</li>
<li><strong>46 languages</strong> - Japanese, Spanish, German, French, Korean, Ukrainian, Chinese and more.</li>
<li><strong>Articles Reader</strong> - the same hover lookup on ordinary webpages.</li>
<li><strong>OCR</strong> - pull text out of images and video frames.</li>
<li><strong>Comprehension target</strong> - see how much of a line is new to you.</li>
<li><strong>Stats and progression</strong> - words, study time, streaks, active days, cards mined, 36 ranks, 200+ achievements.</li>
<li><strong>Auto-next episode</strong> - carries your setup into the next one.</li>
<li><strong>Flexible interface</strong> - run it as an overlay or move it into its own window.</li>
<li><strong>Desktop and Android</strong> - Firefox for Android runs it too, so your phone works the same way. Chrome extensions can't do this at all.</li>
</ul>

🇯🇵 JAPANESE GETS THE FULL STACK

JMdict, JMnedict, KANJIDIC, pitch accent, frequency data and JLPT information. Every other language runs on Yomitan-format dictionaries - the same ecosystem Yomitan users already have - so you are never limited to what ships in the box.

🧠 WHAT IT DOESN'T DO

It doesn't learn the language for you. Hovering a word is recognition, and recognition feels like progress more than it is progress. What builds memory is guessing before you look, retelling the scene, and producing the sentence yourself. Kitsuneru hands you the tools; you still have to use them.

Ranks and XP measure activity, not ability - a log of what you did, not a certificate of what you know. No grinding, no mandatory lessons, no streak guilt.

🔒 PRIVACY

Your study data, mined words and settings stay in your browser's local storage. There is no Kitsuneru account and no Kitsuneru server. Network requests happen only when you use a feature that needs one: subtitle search, downloading a dictionary, or an AI feature you enabled with your own API key. AI stays dormant until you add a key of your own.

🔑 WHY IT ASKS FOR BROAD SITE ACCESS

Subtitles have to be drawn over video players the add-on can't know about in advance, including players inside embedded frames, so it requests access to all sites. It auto-loads only on sites you allowlist. If that's more than you want to grant, restrict it in Firefox's add-on permissions to the streaming sites you actually use - everything above still works.

🦊 Unknown word, hover, understood, back to the episode.