Drop in an audiobook and the ebook it was read from. You get back subtitles timed to the narration, with the wording taken from your own book — not from a machine's guess at what it heard. The work happens in this tab, on your computer.

- HoshiReader read-along — the .srt timing file, to match against your epub. free

- Read-along book — your epub with the narration inside it (EPUB 3 Media Overlays). Thorium, Storyteller and other EPUB 3 readers highlight each line as it is read. free

- Local video — an .mkv with the subtitles built in, for MPV or VLC. free

- YouTube video — a clean .mp4, plus the .srt to upload as its captions. free

Free in your browser, without limit.

The JavaScript version does not use any cloud credits.

Drop your audiobook and ebook here

One at a time or both at once — order doesn't matter. A folder of per-chapter files works too. Or .

Audio: m4b · mp3 · m4a · opus · flac · wav · mkv | Book: epub · fb2 · mobi · azw3 · txt

Optional: drop a jpg or png to use as the video background — sign in required

Getting ready…

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Ready to align

- Audiobook

- Book

Starting

Videos are made here when you ask for them, in seconds. They are not kept anywhere: make them before closing this tab.

SubRead is free, and it has no ads. Chip in for the server on Ko-fi, if it helped.