Does Add Subtitles upload my file or text to Tool-You servers?

No. Add Subtitles runs in this browser tab. Files stay on the device. Limit note: Needs video plus .srt/.vtt. Soft track, not burned-in. Missing caption file is an error.

Should I use Compress Video instead of Add Subtitles?

Use Add Subtitles when you need Mux SRT/VTT into MP4 as a text track. Use Compress Video when you need Shrink an MP4 in the browser. They share a category (Video) but not the same job.

What are the limits of Add Subtitles?

Needs video plus .srt/.vtt. Soft track, not burned-in. Missing caption file is an error. Also: Upload video, then .srt or .vtt. Soft mov_text track, not burned-in (no font). Player must support subtitle tracks.

Add Subtitles

Mux SRT/VTT into MP4 as a text track.

Upload video, then .srt or .vtt. Soft mov_text track, not burned-in (no font). Player must support subtitle tracks.

What Add Subtitles does

Upload video, then .srt or .vtt. Soft mov_text track, not burned-in (no font). Player must support subtitle tracks.

This URL is only for Add Subtitles (add subtitles). Mux SRT/VTT into MP4 as a text track. Other Video tools on Tool-You look similar in the chrome, so the job definition below is the part that belongs to Add Subtitles alone: Upload video, then .srt or .vtt. Soft mov_text track, not burned-in (no font). Player must support subtitle tracks.

How to use Add Subtitles

Stay on this Add Subtitles page (/add-subtitles). Do not switch to Compress Video unless you actually want Shrink an MP4 in the browser..
Add the file type Add Subtitles accepts. Hint from the path: add subtitles. Mux SRT/VTT into MP4 as a text track.
Set only the options that match Add Subtitles. Neighbor Mute Video does something else (Remove audio from a video.). Tool note: Upload video, then .srt or .vtt. Soft mov_text track, not burned-in (no font). Player must support subtitle tracks.
Run Add Subtitles in this tab. Browser memory still applies: Needs video plus .srt/.vtt. Soft track, not burned-in. Missing caption file is an error.
Download or copy the result from Add Subtitles. If it is the wrong job, open Compress Video instead.

When not to use Add Subtitles

Skip Add Subtitles when a neighbor tool matches better — start with Compress Video or Mute Video — or when the description already warns the job will fail. In the tool’s own words: Upload video, then .srt or .vtt. Soft mov_text track, not burned-in (no font). Player must support subtitle tracks.

Questions about Add Subtitles

What does Add Subtitles do that other Video pages on this site do not?: Upload video, then .srt or .vtt. Soft mov_text track, not burned-in (no font). Player must support subtitle tracks. Short version: Mux SRT/VTT into MP4 as a text track.
Does Add Subtitles upload my file or text to Tool-You servers?: No. Add Subtitles runs in this browser tab. Files stay on the device. Limit note: Needs video plus .srt/.vtt. Soft track, not burned-in. Missing caption file is an error.
Should I use Compress Video instead of Add Subtitles?: Use Add Subtitles when you need Mux SRT/VTT into MP4 as a text track. Use Compress Video when you need Shrink an MP4 in the browser. They share a category (Video) but not the same job.
What are the limits of Add Subtitles?: Needs video plus .srt/.vtt. Soft track, not burned-in. Missing caption file is an error. Also: Upload video, then .srt or .vtt. Soft mov_text track, not burned-in (no font). Player must support subtitle tracks.