Free, instant, and entirely in your browser — your subtitle file is never uploaded.
MicroDVD counts frames, not seconds — this has to match the video.
Plain text is the subtitle with the subtitle part removed: the spoken lines, in order, with no timing at all.
SRT is the plainest subtitle format there is: a number, a start and end time, the lines of text, a blank line, repeat. It came out of a 1990s DVD-ripping program called SubRip and has outlived every format designed to replace it, precisely because there is almost nothing in it to go wrong.
This is for when you have the words but not the file. A transcript, a script, a list of lines someone typed out — it becomes a valid SRT with one cue per line, laid end to end. Be clear-eyed about what that is: the wording is yours and the timing is arithmetic. It exists so you can start from a real subtitle file and nudge it into place, rather than typing timestamps by hand.
You almost certainly want SRT because something refuses to take what you have. It is the format with the fewest ways to be rejected: media players, Plex and Jellyfin libraries, YouTube, Vimeo, editing software and hardware players all read it without complaint. Converting into SRT is the standard move for making a subtitle simply work somewhere.
Plain text has no timing, so this conversion has to invent it. Each line becomes a cue of a fixed length, laid end to end from the start of the file. The words will be right and the timing will not — it is a scaffold, not a finished subtitle. The honest workflow is to convert here, then open the result in a sync tool and line it up against the video.
No. The conversion runs in your browser using JavaScript — your TXT 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.
This is for when you have the words but not the file. A transcript, a script, a list of lines someone typed out — it becomes a valid SRT with one cue per line, laid end to end. Be clear-eyed about what that is: the wording is yours and the timing is arithmetic. It exists so you can start from a real subtitle file and nudge it into place, rather than typing timestamps by hand.
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 TXT, it says so and points you at the all-format converter instead of producing a broken file.