Add Subtitles to Video
Add subtitles to a video in your browser: preview them on the video and download matching SRT and WebVTT sidecar files. — free, fast and private.
How to use Add Subtitles to Video
- Choose a video file — it plays in the preview above.
- Type one subtitle line per row, or switch to SRT mode and paste a full SRT file.
- Click Preview Subtitles to see the captions on the video (timings spread evenly across the video, or your SRT timings).
- Download the .SRT or .VTT file and keep it next to your video — players like VLC and YouTube load it automatically.
Honest limit: Subtitles are delivered as a sidecar .SRT/.VTT file, not burned into the video — browsers cannot re-encode a video with burned-in text. Keep the subtitle file in the same folder with the same name as your video and most players will show the captions.
Frequently Asked Questions
Is adding subtitles free?
Yes, it is 100% free with no sign-up. Your video and subtitles stay in your browser.
Does it burn the subtitles into the video?
No. It creates an .SRT/.VTT sidecar file. Burned-in subtitles need a video re-encode, which browsers cannot do for MP4 — the sidecar is what YouTube, VLC and most players actually use.
Can I paste my own SRT file?
Yes. Switch to "Paste SRT" mode and paste the full SRT text — your original timings are kept exactly.
Will the subtitles work on YouTube?
Yes. Upload the .SRT (or .VTT) alongside your video, or add it in YouTube Studio under Subtitles — YouTube accepts both formats.