Tidyleaf

How to learn Japanese with Netflix subtitles

The routine that works for most learners is three passes over the same short scene: first watch with Japanese audio and both Japanese and English subtitles, then with Japanese subtitles only, then rewatch it with as little help as you can manage. Keep sessions to 10 to 20 minutes, daily. Netflix shows one subtitle language at a time, so the two-line first pass needs a browser extension on a computer, or a manual switch between tracks. Below: the routine, how to check which titles have Japanese subtitles for you, what Netflix does on its own, and the free tools, including ours.

The three-pass routine

Pick one scene of roughly 5 to 10 minutes and do these in order. It answers the question learners keep asking on the WaniKani forums, for example in some tips on learning Japanese with Netflix and active learning with Netflix: work on a small piece of a show instead of letting it run.

Pass 1: Japanese audio, Japanese and English lines together. Read the Japanese line first, listen, then glance at the English to confirm what you guessed. Pause whenever a line has a word or grammar pattern you do not know, and note it. This pass is for understanding, not speed.
Pass 2: Japanese subtitles only. Rewatch the same scene with the English line off and follow from the Japanese text and audio together. This is where reading speed and word recognition grow, because you now resolve unknown words from context.
Pass 3: the least help you can manage. Turn subtitles off if you can, or keep Japanese only if you cannot. Aim to catch the gist by ear. Anything you still miss goes into the next day’s notes.

A few habits make the routine stick:

Keep it short. A 5 to 10 minute scene is quick enough to repeat three times in one sitting, and a short session is easier to keep up every day.
Keep a small word list, and review it. Write down only the few words per scene you will plausibly meet again, with the full sentence they came in. Put them into a flashcard app such as Anki and review them before the next session.
Match difficulty to your level. Everyday dramas and slice-of-life series usually use common vocabulary; period pieces and crime series use more specialist words. If you pause on every line, pick an easier show. If you cannot read hiragana and katakana yet, learn those first, because Japanese subtitles are of little use until you can.
Rewatch a show you know. A series you have already seen in English lets you spend your attention on the Japanese instead of the plot.

Find titles with Japanese subtitles in your region

Netflix’s help says subtitle and audio languages depend on your location, your profile language settings, the title and the device, so no single list works everywhere. A practical way to check:

Start playing a title on netflix.com, click the screen, and open the audio and subtitle options. Choose Other if you see it, which Netflix says shows all language options. Check whether Japanese appears for audio and for subtitles.
Favor titles made in Japanese. Japanese dramas, films, anime and variety shows have Japanese audio and often Japanese subtitles. Titles dubbed into Japanese are less useful, because the dub script often differs from the subtitles.
Keep a short list of titles that pass the check and stay on it. Checking a new title every night wastes the session.

One more catch: Netflix says languages can differ by season, and that some shows do not have SDH for all seasons or episodes. Check a later episode too, not only the first.

What Netflix does by itself

According to Netflix’s help, you change audio and subtitles during playback: click or tap the screen (or press the up or down arrow on a TV remote), then open the audio and subtitle options. You get one audio track and one subtitle track at a time; picking a second subtitle language replaces the first.

What that means for the routine:

Pass 2 and pass 3 work with no extra tool. Set Japanese audio and Japanese subtitles, then Japanese audio with subtitles off.
Pass 1 is the awkward one. With Netflix alone you watch the scene with Japanese subtitles, then switch to English and replay it. It works, but the switching breaks the flow and tempts you to skip the Japanese.
Japanese subtitles may reach the browser as images. Netflix often sends Chinese, Japanese and Korean subtitles that way, and a tool cannot restyle or translate an image.

Free options for two lines at once

Japanese and English together needs a browser extension on a computer; extensions cannot run inside the Netflix apps on a TV, phone or tablet. Several free or freemium ones exist:

A language-learning extension such as Language Reactor shows two lines along with a dictionary and other study tools. It is the one to look at if you want a full study environment. Check what the free tier covers, and read its privacy policy, since these tools see what you watch.
A smaller Japanese-focused extension such as NihonGo!, which adds two lines plus JLPT word highlighting. Compare any of them on four points: does it use Netflix’s own subtitles or a machine translation, does it handle Japanese as text, does it keep up when you seek or skip, and what does it send to a server.
Learner-site guides from Migaku and TeamJapanese go deeper on show choice and study methods. Both sell their own study products, so weigh their tool picks accordingly.

Tidyleaf Dual Subtitles for Netflix (ours)

Disclosure: Tidyleaf is us, and this is our product. Tidyleaf Dual Subtitles for Netflix is a Chrome extension that shows two subtitle lines over the Netflix player on a computer.

For this routine, the free tier is enough:

Two lines over the player, on films and series, in a window or fullscreen. You pick the language of each line, and Japanese and English are both on the list.
It uses Netflix’s own subtitles for both lines whenever the title has them, including languages Netflix does not list in your region’s menu. It asks Netflix for text versions of the subtitles, so Japanese comes through as text rather than images.
Only when a title has no subtitles in your second language is that line machine-translated, by a free translation service. Treat a machine-translated line as a rough check, not a reference.
It keeps in sync when you seek, pause, skip or move to the next episode, which matters when you replay a scene three times.
Font size, top or bottom position, distance from the edge and hiding the top line are in the toolbar popup. Set English as the top line and Japanese as the second, and in pass 1 read the lower, Japanese line first. Hiding the top line then takes you from pass 1 to pass 2 without leaving the page.
No account and no API key. You need your own Netflix subscription.

Tidyleaf Pro ($24 a year or $3.99 a month) adds SRT download of the subtitles, saving a clicked word with its sentence and the moment in the episode, and a saved-words page with CSV export for Anki. One Pro key works in every Tidyleaf extension. The free features stay free, with no trial timer.

It works only in Chrome on www.netflix.com, not in the Netflix apps. Tidyleaf Dual Subtitles for Netflix is coming to the Chrome Web Store. Until it is listed, see tidyleaf.github.io. Full details are on the extension page, and what it sends where is in the privacy policy.

Limits to expect

The second language must exist. If a title has no English subtitles, any extension can only machine-translate, which is weaker on slang, names and jokes.
Netflix changes its player. An update can break any subtitle extension until its maker fixes it.
Watching is not enough alone. It builds listening, but kana, kanji and grammar still need deliberate study. Use the show to meet words in context.
Computer only for two lines. For the couch, play on a laptop and connect it to the TV.

FAQ

Can you really learn Japanese from Netflix? You can build listening, vocabulary and a feel for natural speech, but it works best as a supplement. Combine short, repeated scenes with a textbook or app for grammar and reading, and use the show to meet words you have already started to study.

Should I use Japanese or English subtitles to learn Japanese? Both, at different stages. Start with both lines so you can check meaning, then move to Japanese only as soon as you can follow most of a scene. Dropping English too early turns the show into a guessing game; keeping it forever slows your reading.

How long should a daily session be? Ten to twenty minutes is enough for one scene of five to ten minutes watched three times. Short sessions are easier to repeat every day, and repeating the same scene is what turns a show into study.

Does Netflix show Japanese and English subtitles at the same time? No. Netflix plays one subtitle track at a time in every app and in the browser. For two lines you need a browser extension on a computer; otherwise switch the track by hand between passes.

What if a title has no Japanese subtitles in my region? Choose a different title. Netflix’s subtitle languages depend on your location, profile language, the title and the device, so check the audio and subtitle options before you commit to a series. An English line can be machine-translated, but the Japanese line has to exist on Netflix for you to study from.

Is the Tidyleaf extension free? Yes. Two lines and the language choices are free with no time limit. Pro costs $24 a year or $3.99 a month and adds SRT download and saved words.

Tidyleaf is an independent maker of browser extensions. Not affiliated with, endorsed by or sponsored by Netflix. “Netflix” is a trademark of Netflix, Inc., named only to describe the site the extension works on.