Add timed subtitles or text lines that appear at the right moment — type them yourself or import an .srt file. They are burned in at the bottom. Output: WebM or MP4.
| for a line break inside one cue. Processed in real time.
An .srt file sits next to your video and only shows up if the player loads it: YouTube, Vimeo and VLC do, but on WhatsApp, Instagram or inside a PowerPoint it goes missing. Burned-in subtitles are part of the picture, so they travel with the video wherever it ends up, even when someone forwards it. The trade-off is that nobody can switch them off and you can't translate them later. Keep the original video and the .srt file, and burn the text only into the copy you publish.
Every line is one cue: start, end, then the text, with the timing in seconds or as mm:ss. To break a cue over two lines, put a | between the two parts. Keep a cue between one and five seconds and stay under about forty characters per line; beyond that nobody keeps up while you carry on talking. Already have an .srt or .vtt from a transcription service? Import it and fix only the sentences that read awkwardly. The preview shows straight away whether the text appears at the right moment.
Burning subtitles in happens in real time in your own browser: a four-minute video takes about four minutes, and the file stays on your computer — handy for a recorded meeting or a client call. Leave the tab open until it finishes. You get a new file back, usually WebM and sometimes MP4 on a Mac; your original is left untouched. The text lands at the bottom in white with a black outline, so check on TikTok or Instagram that the app's own buttons don't cover it. If the result is still too big to email, send it as a download link instead.