Add Subtitles to Video
Burn in or attach an .srt subtitle file.
Burn in or attach an .srt subtitle file.
How to use Add Subtitles to Video
- Upload your video and a .srt, .vtt, or .ass subtitle file
- Choose to burn the text in or attach it as a switchable track
- Process and download the subtitled video
About Add Subtitles to Video
Add Subtitles to Video takes a subtitle file you already have — .srt, .vtt or .ass/.ssa — and puts it onto your clip without any app to install or account to create. You choose one of two ways to do it: burn the text permanently into the picture so it plays everywhere, or add it as a separate track the viewer can switch on and off. Upload the video, upload the subtitles, pick a mode, and download the finished file.
Which mode you want depends on where the video is going. If you're posting to YouTube, TikTok or Instagram, burn-in guarantees the captions show even when someone watches with the subtitle button off — it re-encodes the video with the words painted on. If you're uploading somewhere that reads its own subtitle track and you'd rather keep captions switchable, the track mode is a fast copy that preserves the original quality and works best with MP4 or MOV. It's a free, browser-based alternative to opening Canva or Premiere Pro just to drop an .srt onto a clip.
Note that this adds subtitles you already have; it doesn't transcribe speech into captions for you. Everything runs on an in-browser build of ffmpeg, so your video and subtitle file are processed on your own device — nothing is uploaded to a server, and there's no watermark or sign-up.
Frequently asked questions
- How do I add subtitles to a video?
- Upload your video and a matching subtitle file (.srt, .vtt or .ass), choose whether to burn the text into the picture or keep it as a toggleable track, then download the result. It all happens in the browser, so there's nothing to install and no file to send anywhere.
- Is it free to use?
- Yes — completely free, with no sign-up, no watermark and no limits.
- Is there freeware to add subtitles to a video without a watermark?
- This is it: free to use with no watermark, no account and no length cap. A lot of downloadable freeware brands your video or nags you to upgrade, whereas here the output is just your video with the captions you added.
- Is my video uploaded to a server?
- No. It runs an in-browser build of ffmpeg, so your video and subtitle file are processed entirely on your own device and never uploaded.
- What subtitle files does it accept?
- It takes common text subtitle files — .srt, .vtt and .ass/.ssa. You need the subtitle file already; this tool adds existing subtitles to a video rather than generating captions from the speech.
- What is the difference between burn-in and a track?
- Burn-in paints the text permanently into the video, so it shows on every player and on social media, but it re-encodes the video and can't be switched off. A track keeps the subtitles separate so the viewer can toggle them, ships faster and keeps the original quality, but some players and social platforms won't display it automatically.
- How do I add subtitles to a YouTube video?
- Make the file here first: use burn-in if you want the captions baked in before you upload, or the track mode if you'd rather keep them switchable. YouTube can also read a separate .srt in its own captions settings, so you can upload the plain video and add the .srt there — this tool is for putting subtitles onto the video file itself.
- Is this a free alternative to adding subtitles in Canva?
- Yes. It does the one specific job of putting an existing subtitle file onto a video, free and with no account, so you don't need a Canva subscription just to attach captions to a clip. Canva is broader design software; this focuses only on subtitles.
- Can I add subtitles without Premiere Pro or other editing software?
- Yes — you don't need Premiere Pro, a desktop editor, or anything to install. It runs entirely in your browser and handles both burning captions in and adding a toggle track, which are the two things people usually open an editor to do.
- Is there an app I need to download?
- No. It works as a web page in your browser, so there's nothing to install on your phone or computer — you open the tool, add your files, and download the video. That also means no app store ads or watermarks on the result.
- Why does the first run take a moment?
- The first time, it downloads a ~32 MB processing engine, which is cached afterwards so later runs start instantly.