Facebook Subtitle Editor — Captions for Silent Autoplay
Facebook videos autoplay silently in the feed. Without captions, viewers scroll past before they know what your video is about. CutSnap adds burned-in captions to Facebook videos and Reels — optimised for the platform's autoplay-without-sound default.
How It Works
Add Facebook Reels Captions in 3 Steps
Upload Your Video
Drop your 9:16 or 16:9 video file. CutSnap starts AI transcription immediately.
Edit & Style Captions
Fix any errors in the live editor. Apply a saved Style Profile or customise the caption design for Facebook.
Export for Facebook
Download the captioned MP4 ready to post on Facebook, plus an SRT file for any platform that accepts caption tracks.
Pro Tips
Facebook Caption Best Practices
Large, high-contrast text for small mobile screens
Most Facebook video is viewed on a 5–6 inch phone screen. Use a large font size (minimum 36px equivalent) and high-contrast colours — white on dark background is safest.
Caption the hook in the first 3 seconds
Facebook autoplays without sound and without controls. Your first caption block needs to immediately communicate value to stop the scroll.
Upload SRT to Facebook for SEO benefit
Facebook accepts SRT files for video posts, which can improve discoverability. CutSnap exports both burned-in MP4 and SRT from the same project.
FAQ
Does Facebook support SRT caption files?
Yes. Facebook allows you to upload an SRT file when creating a video post. CutSnap exports SRT alongside the burned-in MP4.
Does CutSnap handle Facebook's landscape and vertical formats?
Yes. Upload any aspect ratio — CutSnap's editor preview matches your source video orientation.
Can I add captions to Facebook Live replays?
Yes. Download the replay MP4 from Facebook and upload it to CutSnap. Add captions and re-upload as a regular video post.
Add Facebook Captions Free
No credit card · No watermark on SRT exports
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