AI Captions for Shorts

Auto Caption Generator

Q: How do auto captions work?

Shortzly uses AI speech recognition (Whisper) to transcribe your video with word-level timestamps, then applies animated caption styles as ASS subtitles burned into the video.

Q: What caption styles are available?

Six styles: CapCut (word-by-word), Typewriter (sequential fade-in), Karaoke (color fill), Bounce (scale-in), Highlight Word (yellow highlight), and Pop (scale from 0%). All support custom colors and fonts.

Q: Are the captions burned into the video?

Yes. Captions are rendered directly into the video file as animated overlays, ensuring they display correctly on every platform without relying on platform subtitles.

Q: Can I customize caption appearance?

Yes. You can change font, font size, text color, outline color, position, and words per chunk. Save your preferences as a Brand Template for consistency.

Add trending animated captions to your short videos automatically. Shortzly's AI generates word-level captions with 6 popular styles that boost watch time and accessibility.

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How It Works

Three Steps to Viral Shorts

Paste Your Video URL

Drop any YouTube, Vimeo, or Twitch link. Or upload your own video file directly.

AI Finds the Best Moments

Our AI analyzes your video, scores every segment for viral potential, and selects the highlights.

Download Polished Clips

Review, customize captions and face tracking, then download ready-to-post clips in any format.

Why Shortzly

Why Creators Choose Shortzly

Boost Watch Time by 40%

Studies show captions significantly increase video watch time. Most viewers watch short-form content with sound off — captions are essential.

6 Trending Styles

CapCut-style word-by-word, typewriter, karaoke, bounce, highlight, and pop. Match the trending styles that top creators use.

Word-Level Accuracy

AI speech recognition provides word-level timestamps for perfectly synced caption animations. No manual timing needed.

Features

Everything You Need to Create Shorts

AI Speech Recognition

Whisper-powered transcription with word-level timestamps for precise caption sync.

CapCut Style

Word-by-word appearance and disappearance — the most popular style on TikTok and Reels.

Karaoke Style

Text fills with color as words are spoken, creating a sing-along effect.

Custom Colors & Fonts

Customize font, text color, outline color, size, and position to match your brand.

Bounce & Pop Effects

Words scale in with bounce or pop animations for dynamic, eye-catching captions.

Brand Templates

Save your preferred caption settings as reusable templates for consistent branding.

FAQ

Frequently Asked Questions

How do auto captions work?

What caption styles are available?

Are the captions burned into the video?

Can I customize caption appearance?

Ready to Create Viral Shorts?

Join 12,000+ creators who save hours every week with Shortzly. Start with 3 free clips — no credit card needed.

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