Readable long-form subtitles
Review segmentation and wording before viewers encounter the captions.
Generate YouTube subtitles before the upload screen.
Use your source video to create and review captions, then take an SRT to YouTube Studio or publish a version with the captions already burned in.
Drop a video here
MP4, MOV, WebM or MKV · up to 500 MB · 10 minutes
No signup. No watermark. Guest projects stay editable for 24 hours, or 7 days once you sign in.
How it works
- 01
Upload the source video
Choose the file you plan to publish. This tool does not need a public YouTube URL.
- 02
Generate and review
Create timed subtitles, then correct wording, names, punctuation, and line breaks.
- 03
Choose track or burn-in
Keep subtitles selectable with an SRT or make them permanent in a captioned MP4.
- 04
Publish on YouTube
Upload the finished video, and add the separate subtitle file in YouTube Studio when using a track.
Built for the correction after generation.
Styled captions for Shorts
Burned-in active-word treatments can travel with vertical clips when selectable tracks are not the goal.
Reusable subtitle files
Keep an SRT or VTT for another player, archive, translation workflow, or later edit.
Correct the names before they are public
Channel names, sponsors, and jargon are what automatic captioning gets wrong. Fixing them here means the version YouTube indexes is already right.
Long-form lengths supported
Starter accepts videos up to 120 minutes and 5 GB, which covers most full-length uploads rather than only clips.
One transcript, both formats
The same project yields the SRT for the main upload and a burned-in vertical cut for Shorts, without transcribing the video twice.
Why not just use YouTube's automatic captions?
YouTube will caption your video for free after upload. For a lot of channels that is fine. Here is when it is not.
They appear after you publish
Automatic captions are generated once the video is processed, so the first viewers, and the first indexing pass, may see nothing or see errors you have not read yet.
Corrections mean re-uploading a file anyway
Fixing YouTube's automatic track means editing in Studio or uploading your own SRT. If you are producing an SRT regardless, producing a correct one first is less work.
Shorts need the words in the picture
A selectable track does nothing for muted autoplay. Burned-in captions are the only ones a Shorts viewer reliably sees, and YouTube will not create those for you.
Your captions are searchable text
YouTube reads the subtitle track. An accurate SRT with the right names and terms in it describes the video better than a transcript that misheard them.
What this produces for YouTube.
- Starts from
- Your source video file
- YouTube URL import
- Not supported
- Subtitle track
- SRT or VTT
- Burned-in output
- Captioned MP4
- Accepted files
- MP4, MOV, WebM, MKV
- Free video projects
- 3 per month
- Free length and size
- 10 minutes, 500 MB
- Starter length and size
- 120 minutes, 5 GB
- Maximum resolution
- 1080P free, 4K on Starter
- Watermark
- None, on any plan
What this will not do.
Stated plainly, because two of these are the first thing people try.
Pull subtitles from a YouTube link
There is no URL import. The workflow starts from the video file you are about to publish, which is the one you already have.
Caption someone else's video
Because it works from your source file rather than a public URL, it is not a way to transcribe a channel you do not own.
Translate your subtitles
Captions are produced in the language spoken in the video. For YouTube's multi-language subtitle tracks you would translate the exported SRT elsewhere.
Questions before upload
Can I generate subtitles from a YouTube URL?+
The current workflow starts from the source video file. It does not promise importing or downloading a public YouTube URL.
Should I download an SRT or a captioned video?+
Use SRT for a selectable YouTube subtitle track. Use a captioned MP4 when the visual style should always remain visible.
Can I edit the subtitles before uploading them to YouTube?+
Yes. Review and correct the text and timing before downloading the subtitle file.
Does the captioned MP4 include a watermark?+
No. Exported videos are watermark-free on both plans, including free.
Is this better than YouTube's own automatic captions?+
It is different. YouTube captions after you publish and cannot burn words into the picture. This lets you correct the text before anyone sees it, and produces a burned-in cut for Shorts.
How long a video can I caption?+
Up to 10 minutes on the free plan and 120 minutes on Starter, which is also the hard ceiling on any plan.
Can I use the same project for the main video and a Short?+
Yes. Export the SRT for the long-form upload and a burned-in vertical cut for the Short from the same transcript.