Free, instant, and entirely in your browser — your subtitle file is never uploaded.
MicroDVD counts frames, not seconds — this has to match the video.
ASS is a typesetting language that happens to carry subtitles. Named styles, exact positioning, rotation, fades, karaoke timing and vector drawing all live in the file, split across a [Script Info], a styles and an [Events] section.
Plain text is the subtitle with the subtitle part removed: the spoken lines, in order, with no timing at all.
Pulling the dialogue out of a typeset file, usually for translation, proofreading or a word count. ASS is dense to read by hand — every line prefixed with its layer, style, margins and effect, with override tags scattered through the text itself — so extracting clean prose from it is genuinely useful work rather than mere format juggling. Those override tags are stripped along with everything else, which is exactly what you want when the file is going to a translator or an editor.
You want plain text because you are done with the video. Reading the transcript, counting words, feeding the script to a translator or a language model, quoting a line in a document — all of it is easier without timestamps in the way. This is the one conversion here you should expect to be one-way.
This one throws the timing away. Everything a subtitle knows about *when* a line appears lives in its timestamps, and plain text has none — so what comes out is the dialogue, in order, and nothing else. That is exactly right when you want to read the transcript, run a word count, or paste the script somewhere; it is the wrong move if you ever intend to put it back on a video, because there is no way to recover what was discarded.
No. The conversion runs in your browser using JavaScript — your ASS file is read from disk, converted in memory and handed back as a download. Nothing is transmitted, so there is nothing for us to store or delete. You can disconnect from the internet after this page loads and the conversion still works.
Pulling the dialogue out of a typeset file, usually for translation, proofreading or a word count. ASS is dense to read by hand — every line prefixed with its layer, style, margins and effect, with override tags scattered through the text itself — so extracting clean prose from it is genuinely useful work rather than mere format juggling. Those override tags are stripped along with everything else, which is exactly what you want when the file is going to a translator or an editor.
The page checks before it converts. Subtitle formats are identified by what is inside the file rather than by the extension — which matters, because .sub alone is used by three unrelated formats. If you hand this page something that is not ASS, it says so and points you at the all-format converter instead of producing a broken file.