The Ultimate Japanese Immersion Tool for YouTube

Distractions no more! Immerse yourself and unlock the true learning potential of YouTube with NihongoTube.

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Feature 01

Japanese-Only Filtering

Filter out non-Japanese content across your entire YouTube experience, including the homepage, sidebar, search results, video endscreens, and more.

English

日本語

English

日本語

Feature 02

JLPT Level Estimation

Videos are analyzed and tagged with a JLPT difficulty level from N5 to N1, so you always know if content matches your current level.

JLPT N3

JLPT N4

JLPT N2

N/A

Feature 03

Recommended Channels

A curated shelf of quality Japanese channels shown on your homepage, filterable by JLPT level and subtitle availability.

🌸 NihongoTube Recommendations

AnimeN3

News

Feature 04

Watch Time Tracking

See how much time you spend watching Japanese content each week, broken down by JLPT level.

4h 23mtotal this week

Feature 05

Dubbing Antidote

Automatically switches to the native Japanese audio track when a dubbed version would otherwise play. No more accidental English.

▶

Audio Track

🇬🇧English (Auto-dubbed)

🇯🇵Japanese (Original)

✓ Switched to Japanese audio

Feature 06

JLPT Box

Every video now shows a detailed JLPT box: level, speech rate in words per minute, and a vocabulary breakdown. See exactly how hard a video is at a glance.

▶

N288 wpm

vocab

Feature 07

Mobile Support

Full-featured extension available on Firefox for Android. Immerse yourself in Japanese on the go.

Edge CanaryQuettaFirefoxOrion

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See NihongoTube in action

Watch how NihongoTube transforms your YouTube experience.

What other NihongoTube users are saying

Join the hundreds of learners who use NihongoTube to boost their Japanese learning productivity.

"I have been using it for months now. Now I can look stuff up on my phone or in my free time without messing my japanese algorithm or having to switch account many times a day."

u/Ocrim-Issor

Reddit User

"Woah! I didn't expect it to start working already. I usually have to switch over to my Japanese curated YT channel, but this even overrides my english accounts. Great for limiting distractions since majority of the english leisure content won't show up with the entension filter active no matter which channel it's on."

Chenn

NihongoTube Discord Member

"This is one of the best game changers in studying Japanese that I've seen in recent years. Keep up the good work sir!"

u/1_8_1

Reddit user

"Yo my buddy just put me on. This extension is sick fr."

Doctordisco422

NihongoTube Discord Member

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Frequently asked questions

Here's what NihongoTube users often want to know.

How does JLPT estimation work?

NihongoTube uses the transcript of a video to analyze the vocabulary, grammar and speech rate. These factors are then compared against known JLPT level data to estimate the video's difficulty level.

How does filtering work?

NihongoTube uses video titles and metadata to determine whether a video is Japanese and employs some clever tricks to get around things like YouTube's automatic translations.

What browsers are supported?

NihongoTube is available for Chrome, Edge, Brave, Firefox and other Chromium-based browsers.

Can I use NihongoTube on mobile?

Yes! NihongoTube works on Firefox for Android. Simply install Firefox on your Android device, then install the NihongoTube extension from the Firefox Add-ons store. Mobile support includes core filtering features optimized for smaller screens.

Can I customize what gets filtered?

Absolutely! The extension comes with extensive customization options accessible through the popup menu. You can toggle filtering for comments, specific types of recommendations, JLPT badges, and more. There's also a master toggle to quickly disable all filtering when needed.

Ready immerse yourself in Japanese on YouTube?

Get started with NihongoTube today.

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