Generate Viral Captions
in Seconds
Upload any image and instantly get platform-optimized captions for Instagram, YouTube, LinkedIn and viral hashtags. Powered by Groq AI.
Drop your image here
Built for creators
Every feature you need to create compelling social media content at scale.
Lightning Fast
Generate captions in under 3 seconds with Groq's ultra-fast LLM inference.
Drag & Drop Upload
Simply drag your image or click to upload. Supports JPEG, PNG, WebP, and GIF.
Multi-Platform
Optimized captions for Instagram, YouTube, LinkedIn — all in one click.
Viral Hashtags
30 trending, niche-specific hashtags proven to boost discoverability.
One-Click Copy
Copy any caption to clipboard instantly. Ready to paste anywhere.
Download All
Export all captions as a text file for later use or team sharing.
Dark / Light Mode
Switch between dark and light themes to match your workflow.
Mobile Responsive
Fully optimized for all screen sizes — desktop, tablet, and mobile.
Secure & Private
All API calls are server-side. Your images and keys are never exposed.
Start free, scale anytime
No hidden fees. Cancel anytime. 30-day money-back guarantee.
Free
Perfect for trying out CaptionAI
- 5 generations/day
- All 4 platforms
- Viral hashtags
- Copy to clipboard
- Basic tones
Common questions
Everything you need to know about CaptionAI.
Upload any image and our AI analyzes it visually to understand the context, subject, mood, and story. It then generates platform-specific captions tailored to each social network's best practices, character limits, and audience expectations.