Get your Japanese learning content
to the next level.
Paste a YouTube link or upload a video. justpera generates subtitles, furigana, a vocabulary list, and an interactive learner page — automatically, in minutes.
日本語レッスン #42 — Everyday Expressions
Sayuri Japanese · N3–N4
Less grind. More value for your audience.
Hours back, every video
Subtitles, furigana, vocabulary lists — all generated automatically from your video. What used to take an afternoon takes minutes. Spend that time making content, not formatting it.
A real reason to subscribe
The learner page gives your YouTube audience something they can't get for free — an interactive study experience built around your content. A concrete upgrade, not just "support me."
Members who stay
A member who actively studies your content is more invested than one who passively watches. Study materials give them a reason to return to every video — and a reason to stay subscribed.
Professional without the effort
Accurate furigana, JLPT-tagged vocabulary, grammar notes — the kind of study material that looks like it took a professional hours to build. Your audience gets quality; you keep editorial control before anything goes live.
One video in. Six outputs out.
Plain text, YouTube-compatible. Drop it into your editor or upload directly to YouTube.
Ruby text over kanji for DaVinci Resolve and Premiere — baked into the video timeline.
Timestamped, copy-ready. Paste into Patreon posts, show notes, or a community update.
Every word from your video, JLPT-tagged with readings and definitions. One download.
An interactive study page at justpera.app. Share the link in a Patreon post or community update.
Printable vocab and grammar summary. Ready to share as a download or Patreon exclusive.
From raw video to published content.
Submit a YouTube link or upload a file. The pipeline handles transcription, enrichment, and packaging — you review, approve, and share.
Submit a YouTube link or upload a video
Paste any YouTube URL and the pipeline extracts audio and existing subtitles automatically. Or upload a video file directly — Whisper handles the transcription.
Review and correct
For uploaded videos, check the transcript for errors, nudge timings, and exclude segments you don't want. YouTube URL projects skip straight to step 3.
Publish and share
Download subtitle files and transcript immediately. Opt in to generate the interactive learner page — then share the link wherever your audience already is.
Works alongside your existing Patreon
Gate the learner page behind any Patreon tier. Your members log in with Patreon — no new subscription, no extra friction. Keep Patreon for payments; use justpera for the content experience.