Free subtitle burner: burn SRT or VTT subtitles into a video, hardcoded

Yes. There is no account, no credit card, and no watermark on the exported MP4. It is free because the rendering happens in your browser, not on our servers. The free tool includes a handful of caption styles; the full library, word editing, and translation live in the captionrich editor, which has a free plan too.

Burned-in (hardcoded or open) subtitles are drawn into the video frames, so they show everywhere the video plays and cannot be switched off. A subtitle track (closed captions) is a separate SRT or VTT file the player overlays on demand. Social apps such as TikTok, Instagram Reels, and YouTube Shorts do not read your subtitle file, which is why creators burn them in.

SRT (SubRip) and WebVTT, which is what YouTube, Premiere Pro, Final Cut Pro, DaVinci Resolve, CapCut, Rev, Descript, and Subtitle Edit export. The parser copes with Windows line endings, byte order marks, Windows-1252 accents, HTML formatting tags, ASS position codes such as {\an8}, and cues with a missing blank line between them. It does not read ASS or SSA styling; convert those to SRT first.

No. Both files are opened by your browser and stay on your device. The subtitles are laid over the video with the same rendering engine the captionrich editor uses, and the MP4 is encoded locally with WebCodecs. You can turn off Wi-Fi after the page loads and the export still finishes.

Yes. Every cue starts and ends at the timecode in your file. Overlapping cues are trimmed to the start of the next cue, the same rule players use. Word-level highlighting inside a cue is estimated from the cue's length, since SRT and VTT only carry timings per line; the captionrich editor can retime individual words.

Yes. Pick from the included animated caption styles, then set the font, size, colors, highlight color, and position under Customize, or drag the subtitles anywhere on the video. Every change shows in the preview exactly as it will render in the MP4.

Editing cue text is a captionrich editor feature. Fix the line in your subtitle file with any text editor and drop it in again, or open the video in the captionrich editor, where you can click any word to correct it, retime it, and split or merge lines. Word editing is available on the free plan.

Yes. Unlike a caption generator, this tool does not need speech to transcribe, so a muted screen recording or a music-only clip works fine. The subtitles come entirely from your file, and the export keeps whatever audio the video has.

Yes. The tool works in Safari on iOS and Chrome on Android. Export uses your phone's hardware encoder through WebCodecs, so a few minutes of video renders in about the time it takes to play. Very long videos are quicker on a laptop.

No limit is set by us. Because rendering runs on your device, the practical ceiling is your computer's memory and patience. For a video with speech, the captionrich editor also generates the captions itself, so you never need the subtitle file in the first place; its Free plan includes 3 videos a month.