Add Subtitles to a Video, Free and Without a Watermark
Drop in a video and AI writes the subtitles in seconds, in any of 99 languages. Fix any word it hears wrong, then either download the subtitle file or burn the words into the picture. It's free, there's no sign-up, and nothing gets a watermark.
Your video never leaves your device. How?
In Accurate mode only the audio is sent to our server to be transcribed, then deleted. Choose "On this device" in the settings and nothing is uploaded.
Select or drop a video or audio file
MP4, WebM, MOV, MP3, WAV, M4A, FLAC, OGG. Your video stays on your device.
Click, tap, or drop a fileHow to add subtitles to a video
Choose the video
Drop or pick an MP4, MOV, WebM or MKV file. Nothing uploads.
Let AI write them
Pick the spoken language, or leave it on Auto-detect, and the subtitles appear in seconds.
Fix any word
Tap a line to correct a name or a term. Your edits carry into whatever you export.
Export or burn in
Download an SRT or VTT file to keep the subtitles separate, or burn them into the picture for Reels and Shorts.
What happens to your video
In Accurate mode the sound alone is taken out of the video in your browser and sent to be written out by Whisper, with each line's start and end time. The picture never goes anywhere. In on-device mode even the sound stays put, and a smaller model runs in the browser.
Burning in is the only step that rewrites the video, and that also happens on your device, so the result never passes through a server and never comes back stamped.
Features
Both kinds of subtitle
A separate SRT or VTT file that a player can switch off, or words burned into the picture for a platform that ignores subtitle files.
Free with no watermark
Every video, every style, no sign-up and no mark on the result.
Yours to correct
AI mishears names and jargon. Every line is editable before anything is exported.
Nothing uploaded
Your video never leaves your device. In Accurate mode only the sound is sent to be written out, and nothing is kept.
Frequently asked questions
What are burned-in subtitles vs. soft subtitles?
Burned-in (hardcoded / open) subtitles are permanently embedded in the video pixels — viewers cannot turn them off. This is the standard for Instagram Reels, TikTok, and YouTube Shorts. Soft subtitles (SRT/VTT files) are separate files that can be toggled on/off in a media player. ClipUtils supports both — export SRT/VTT for soft subs, or burn in for hard subs.
Can I edit subtitles before exporting?
Yes. Every subtitle segment is editable. Click on any line to fix text, correct names or technical terms, or adjust wording. Your edits are reflected in the exported SRT/VTT file and in the burned-in video.
My laptop is slow. Can I still add subtitles to a 10-minute video?
Yes. In Accurate mode (the default) only the sound goes to our server to be written out, so a slow laptop isn't doing the hard work; videos up to 15 minutes are free that way. Burning the subtitles in takes a little longer on an older computer, but it works.
Does my video get uploaded to add subtitles?
No. The picture never leaves your device at any point. In Accurate mode the sound alone is sent to be written out and is not kept; in on-device mode nothing is sent at all.