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MP4, WebM and MOV · your file never leaves this device
Play the video, add a caption at the playhead, type it, and see it appear over the picture. Export .srt for YouTube or .vtt for the web.
Subtitles are the difference between a video that gets watched on mute and one that gets scrolled past. Most social viewing happens with the sound off, and an SRT file is what YouTube, LinkedIn, Premiere and every serious player expect.
This is a hand-written caption editor rather than an automatic transcriber, which means it is exact. You add a caption at the playhead, type what was said, and adjust the in and out times until they match. The caption appears over the video as it plays, so you can check the timing rather than guess it.
You can also import an SRT you already have — from a transcription service, an old edit, or a colleague — and use this to fix the wording or shift every line at once when the audio is out of sync. Export gives you a standards-compliant .srt or .vtt, which uploads directly to YouTube's subtitle screen.
No. It produces a separate subtitle file, which is what YouTube and most players want, and what lets viewers turn captions on and off.
In YouTube Studio, open the video, go to Subtitles, choose your language and select Upload file, then pick “With timing” and choose the .srt.
No — nothing is stored on a server or in the browser. Export the file before you leave the page.