Muted feed dominance
85% of Facebook users watch video without sound. Without subtitles, you're invisible to most of your audience.
Facebook Subtitles
Subtitle Generator for Facebook - AI Captions for FB Videos
85% of Facebook videos are watched without sound. Add AI-generated subtitles to your Facebook videos, Reels, and Stories to capture the muted majority. Optimized for in-feed autoplay and Facebook's recommendation algorithm.
85%
FB videos watched muted
12%
higher watch time with subs
50+
languages supported
Features
Why Facebook videos need subtitles
Boost watch time
Subtitled Facebook videos see 12% longer average watch time - directly boosting algorithmic distribution.
Accessibility compliance
Meet Facebook's accessibility guidelines. Inclusive content gets wider distribution and reaches more viewers.
Reels + Stories support
Generate captions for Facebook Reels (9:16) and Stories. Vertical formats with perfectly-sized text.
Multi-language for global pages
Auto-translate subtitles for international Facebook pages. Serve audiences in their native language.
Ad performance boost
Facebook video ads with captions see 25% lower cost-per-click. Subtitles make every ad dollar work harder.
Workflow
How to add subtitles to Facebook videos
Step 1
Upload your video
Upload the video you want to post on Facebook. Any format, any length supported.
Step 2
Generate AI subtitles
CapsAI transcribes your audio with 99%+ accuracy. Multi-speaker detection handles interviews and podcasts.
Step 3
Customize for Facebook
Choose caption styles optimized for Facebook's feed. Large, readable text that works at any scroll speed.
Step 4
Export and publish
Download with burned-in captions or export SRT to upload as Facebook's native subtitle track.
Use Cases
Facebook video formats covered
Facebook feed videos
Standard landscape or square videos in the News Feed. Captions sized for autoplay viewing without sound.
Facebook Reels
Vertical 9:16 Reels with animated captions. Trending styles that match what's performing on Reels right now.
Facebook Stories
24-hour vertical Stories with positioned captions. Text placed to avoid overlapping with FB's UI elements.
Facebook video ads
Caption your video ads for 25% better performance. Ads with subtitles convert better across all placements.
FAQ
Facebook subtitle generator FAQs
Should I burn in subtitles or use Facebook's SRT upload?
Both work. Burned-in gives you full control over styling and works everywhere. SRT upload lets Facebook auto-show/hide captions. We recommend burned-in for Reels and SRT for longer feed videos.
What aspect ratio works best for Facebook videos?
1:1 square and 4:5 vertical get the most screen space in-feed. 9:16 for Reels and Stories. CapsAI supports all ratios.
Do subtitles help Facebook video ads perform better?
Yes - significantly. Facebook's own data shows captioned video ads see up to 25% lower cost-per-click and higher completion rates.
Can I add subtitles to Facebook Live replays?
Yes. Download your Facebook Live replay, upload to CapsAI, and get AI-generated subtitles. Re-upload the captioned version.
Is the Facebook subtitle generator free?
Yes. CapsAI's free tier includes subtitle generation, styling, and export with no watermark. Perfect for Facebook creators.
Stop losing 85% of your Facebook audience
Most Facebook users watch on mute. Add AI subtitles to every video and capture the silent majority. Free, no watermark.
Try CapsAI Free →