How to burn subtitles into a video
- Choose your video and its subtitle file (.srt or .vtt). No subtitles yet? Make them with the auto subtitle generator, then come back.
- Pick a style: a classic black box, outlined text, a soft shadow, bold yellow, or big bold captions for Reels and TikTok. Adjust the size, position and colour.
- Scrub or play the preview. If every subtitle is early or late, set a timing offset.
- Choose the resolution and format, press Burn in subtitles, and download the captioned video.
Open captions vs subtitle files
A subtitle file is a separate track that viewers can switch on or off, which YouTube and most players support. Burned-in (open) captions are drawn into the picture itself, so they always show, on every platform and in every app, including Instagram, TikTok, WhatsApp and LinkedIn, where uploaded caption files are limited or ignored, and in presentations and email. Since most social video is watched without sound, open captions keep viewers watching and make your content accessible.
The video is re-recorded in your browser as it plays, so rendering takes as long as the video; keep the tab visible. Text is wrapped to fit 86% of the width and keeps clear of the edges for safe areas. Chrome, Edge and Safari can save MP4, Firefox saves WebM. Nothing is uploaded and there is no watermark.
Can I remove burned-in subtitles later?
No, they become part of the picture. Keep your original video and subtitle file so you can make a new version.
Which subtitle formats work?
SRT and WebVTT. Styling tags in the file are ignored; the style you choose here is used.
My subtitles are out of sync. What can I do?
Use the timing offset for a constant delay, or fix individual cues in the subtitle editor first.
Is my video uploaded?
No. Everything is processed in your browser.