Add subtitles to video, free
Automatic with AI · editable · .srt or burned-in · nothing is uploaded
- 100% free
- No signup
- Nothing is uploaded
- No watermark
This tool listens to your video and writes the subtitles for you, inside your browser: the video is never uploaded to a server. Fix any line, pick a style and download the .srt file (for YouTube, Vimeo or a course) or the MP4 with the subtitles burned in, ready for social media. Free, no signup, no watermark.
How to add subtitles to a video in 3 steps
Add the video
Drop an MP4, MOV or WebM of up to 20 minutes. It is never uploaded: it is read in your browser.
Generate and fix
The AI writes the subtitles with their timing. Click a line to see it over the video and fix whatever needs fixing.
Download
Get the .srt for YouTube or a course, or the MP4 with the subtitles burned in using the style you picked. No watermark.
Why use this subtitle generator
Actually free
No paid plan, no watermark, no subtitle minutes that run out.
No signup
No email, no account: open the page and generate.
Your video is never uploaded
The AI runs inside your browser. Nobody else sees the video, not even us.
Editable
Fix names, numbers or words before downloading; the preview updates instantly.
Two outputs
.srt file for YouTube, Vimeo and courses, or MP4 with burned-in subtitles for social media.
Readable on any screen
At most two lines per subtitle and three styles that scale with the video size.
What it is for
Reels, TikTok and Shorts
Most videos are watched on mute: burned-in subtitles keep people watching.
YouTube
Upload the .srt as a subtitle track in YouTube Studio: better accessibility and search ranking for the video.
Classes and courses
Subtitle your recorded lessons for students who study without sound or in another language.
Recorded meetings
A Zoom or Meet recording with subtitles can be skimmed without listening to it all again.
Client videos
Deliver the subtitled video without paying a subscription or leaving another app's watermark.
Accessibility
People with hearing loss can follow the whole video.
How is it different from CapCut, Veed, Kapwing or Submagic?
The best-known apps upload your video to their servers and, on the free plan, add a watermark or cap the minutes. This tool works differently:
- The video never leaves your device: the AI runs in your browser.
- No watermark and no subtitle minutes that run out. Kapwing charges US$16/month to remove its watermark and Submagic starts at US$19/month (official pricing, November 2026).
- The .srt downloads for free; Veed only allows it on paid plans.
- Up to 2 GB and 20 minutes, with no slow upload to wait for.
Frequently asked questions
How do I add subtitles to a video for free without a watermark?
Add the video here, click "Generate subtitles" and download the MP4 with the subtitles burned in: no watermark and no video limit. The AI transcribes inside your browser, so there is no account and the video is never uploaded.
Is my video uploaded to a server?
No. The audio is transcribed with an AI model downloaded to your browser, and the video is re-encoded on your device with WebCodecs. That is why there is no video limit and no queue.
Does it work for YouTube, TikTok, Reels or Shorts?
Yes. For YouTube download the .srt and upload it as a subtitle track in YouTube Studio. For TikTok, Reels and Shorts download the video with burned-in subtitles and pick the "Large" style, made for vertical video.
How long does it take to generate the subtitles?
It depends on the video length and your device. With a graphics card (WebGPU) the Fast model transcribes about three times faster than the audio duration; without one, roughly in real time. Burning the subtitles takes about as long as compressing the video. The first time it downloads the model (39 or 74 MB) and keeps it in the browser.
Why does the text have mistakes?
The AI gets proper names, numbers, acronyms and background noise wrong. That is why every line can be edited before downloading. If the language was not detected correctly, pick it manually; the Accurate model does better with accents and long audio.
How is it different from CapCut, Veed, Kapwing or Submagic?
Those apps upload your video to their servers and, on the free plan, add a watermark or cap the minutes: Kapwing charges US$16/month to remove its watermark, Submagic starts at US$19/month and Veed only lets you download the .srt on paid plans (official pricing, November 2026). CapCut has moved auto captions to its Pro plan for many accounts. Here everything is free and the video never leaves your device.
Can I edit the subtitles or change the timing?
You can fix the text of each line and delete the ones you do not want; the burned-in video and the .srt use your changes. The timing is set by the AI and cannot be dragged by hand in this version; if a line is misplaced, edit the .srt in any text editor.
Why doesn't it work in my browser?
Transcribing works in any modern browser. Burning the subtitles into the video needs WebCodecs: Chrome, Edge, Safari 17 or Firefox 130 or newer. If yours does not have it, you can still download the .srt.
What are the size and length limits?
Up to 2 GB, 20 minutes and 4K resolution per video. The video with burned-in subtitles is exported at up to 1080p. On phones, stay under 5 minutes: the AI runs on the phone and takes longer.
Can I translate the subtitles into another language?
Not yet: the subtitles come out in the language of the audio. You can download the .srt, translate it with ChatGPT or Google Translate and upload it to YouTube as a second subtitle track.
What is an .srt file and where do I use it?
It is the standard subtitle format: numbered blocks with a start time, an end time and the text. It is accepted by YouTube, Vimeo, VLC, Premiere, DaVinci Resolve, Moodle and most players and editors.
Other video tools: Remove subtitles · Compress video · Audio to text