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Add Subtitles to X (Twitter) Videos
Captions styled for X (Twitter). Upload your clip, pick a look and export a 16:9 or 1:1 video ready to post.
Drop a video or audio file
MP4, MOV, WEBM, MP3, WAV · up to 10 min on Free · no signup
01
Upload
Drop a video or audio file. It never leaves your device.
02
Edit & style
Fix any word, pick a caption style, adjust size and position.
03
Export
Download SRT/VTT free, or an MP4 with captions burned in.
Why caption your X (Twitter) videos
Most social video is watched with the sound off. Captions keep people watching longer, make your content accessible and help X (Twitter) understand what your video is about.
Tips for X (Twitter) captions
Videos on X autoplay muted in the timeline. Minimal captions at the bottom keep the footage clear while still telling the story.
FAQ
Frequently asked questions
What size should X (Twitter) captions be?+
Use the Size slider to make captions large enough to read on a phone without covering faces. The preview shows exactly how they'll look in a 16:9 or 1:1 frame.
Can I add captions to X (Twitter) videos for free?+
Yes. Transcription, editing and SRT downloads are free. Captioned video exports are free at 720p with a small watermark, or watermark-free at 1080p on a paid plan.
Is my video uploaded to your servers?+
No. Your video is processed entirely in your browser. Only a compressed audio track is sent for transcription, and it isn't stored afterwards.
How accurate are the captions?+
Very accurate for clear speech, using the latest Whisper-class speech recognition. Every word is editable, so you can fix names, jargon or slang before you export.