KonekoSub is a desktop toolkit for subtitle creators. It extracts the audio from your video, transcribes speech with AI, and gives you a purpose-built editor to time, translate, style and quality-check subtitles — without juggling five different tools.
Everything a subtitling workflow needs, from the first second of audio to the final exported file.
Drop in an episode and KonekoSub pulls clean, transcription-ready audio out of it — no separate converters or command-line tools.
Generate a timed first-pass transcript from scratch using cloud transcription APIs or local speech models, with word-level timing and speaker-friendly segmentation.
Edit dialogue against the waveform and video, retime cues, and work in the formats subtitlers actually use — full ASS and SRT support included.
Project glossaries and per-character voice profiles keep names, honorifics and speaking styles consistent across a whole season, not just one episode.
Automated checks catch timing gaps, missing lines, orthography issues and style drift before release, plus reports that show exactly what needs a human look.
A local toolkit interface lets other software drive transcription, glossary and translation jobs programmatically, so KonekoSub fits into larger production pipelines.
Four steps from video file to release-ready subtitles.
Add a video file; KonekoSub extracts and prepares the audio track automatically.
AI speech-to-text produces a timed draft transcript in the source language.
Translate, time and style the lines with glossary and voice-profile guidance.
Run quality checks and export a clean .ass or .srt file, ready to ship.
KonekoSub is an independent software project building professional-grade tools for anime subtitling and localization teams. Fansub and localization work still runs on scattered scripts and manual drudgery; we're building the single, focused application that replaces them. The app is in active development and already used in real production workflows.
Questions, partnerships or early access: hello@konekosub.net