1. Upload your Niconico file..
With our uploader, you can import your file from anywhere, whether it's on your laptop, Google Drive, Youtube, or Dropbox. The first 10 minutes are free and there's no file limit.
Save time adding subtitles to Niconico with HappyScribe. Generate subtitles to your video and export them in SRT, VTT and many other formats
Below is the list of popular languages we support for transcription and subtitles.
See all languages ▸ Get StartedWith our uploader, you can import your file from anywhere, whether it's on your laptop, Google Drive, Youtube, or Dropbox. The first 10 minutes are free and there's no file limit.
We support more than 120 languages, dialects, and accents.
Our automatic subtitling software is lightning fast and 85% accurate. With our human service, your subtitles will be carefully generated and proofread by an expert, and delivered with 99% accuracy.
Our generator will generate your subtitles in just a few minutes (depending on the length of your file). If you select our human service, your subtitles will be ready within 24 hours.
You can export to SRT, VTT, and many more. It's that easy to get your subtitles and closed captions for Niconico

Subtitles can greatly improve your Niconico videos by making them more accessible and engaging. Since many users enjoy content without sound or prefer reading along with the dialogue, subtitles help retain those viewers. Additionally, Niconico has a global fanbase, and subtitles ensure your content can be understood by audiences from different countries and regions.
Here’s why subtitles matter on Niconico:
Accessibility: Make your videos accessible to those who are hearing impaired or watching on mute.
Increased viewer retention: Subtitles keep viewers interested longer, even if they’re multitasking or in quiet environments.
Global audience: Reach a broader, international audience by adding subtitles in multiple languages.
Happy Scribe makes it easy to add professional, accurate subtitles to your Niconico videos. While some platforms offer basic auto-captioning, Happy Scribe’s combination of AI transcription and human review ensures top-notch accuracy. Simply upload your video, generate the subtitles, make adjustments in our editor, and export in the correct format for your Niconico upload.
For creators using other platforms, Happy Scribe supports subtitle creation on popular sites like Twitch, Rumble, Wistia, and Bilibili. And for a fast, all-in-one solution, try our Subtitle Generator for any of your video needs.
Niconico is a Japanese video-sharing platform where users can post comments directly on videos. It is popular for its unique community-driven content and live streaming.
HappyScribe is the perfect platform for editors to quickly and affordably do video transcription for Niconico. Even native speakers and freelancers can greatly accelerate their workflow.
If you choose to use our automatic subtitle generator, your subtitles will be ready in a matter of minutes. If you want your subtitles to be 99% accurate, you might be interested in our human Niconico subtitling service. In this case, your file will be available in 24 hours.
Yes, we provide subtitle translation services to many languages.
Yes, you can! We support importing files from many platforms such as Google Drive, Dropbox, Wistia, Vimeo, Youtube...
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