Instagram Carousel Maker with AI Captions

Instagram carousels get 3x more engagement than single image posts. But designing slides manually is slow, especially when you need to write captions for each one. VidMint is an Instagram carousel maker that generates complete slide sets with AI captions automatically.

AI Writes Every Slide Caption

VidMint generates captions for all slides in a single AI call, so the narrative flows naturally from slide 1 to the final slide. The AI follows a story arc: hook on slide 1, problem, proof, solution, and call to action on the last slide.

Multiple Variations from the Same Photos

Upload a pool of photos and VidMint generates multiple carousel sets, each with different photo combinations and caption sets. 8 photos and 3 caption sets can produce dozens of unique carousel variations.

Optimized for Instagram

All slides render at 1080x1350 (4:5 ratio), the optimal size for Instagram carousels. The same slides also work on LinkedIn, X (Twitter), and Pinterest carousels.

Caption Style Picker

Choose your font, color, size, and background style. Position captions at the top, center, or bottom of each slide. The style is consistent across all slides in a set for a polished, branded look.

Download and Post

Download all slides as individual PNG images. Upload them in order to Instagram, LinkedIn, or any platform that supports carousel posts.

Frequently Asked Questions

How many slides per carousel?

Instagram supports up to 20 slides per carousel. VidMint generates slide sets based on your photo pool. You control how many photos go into each set.

What photo formats are supported?

VidMint accepts JPG, PNG, and WebP images. All slides render at 1080x1350 (4:5 ratio) which is the optimal size for Instagram carousel engagement.

Can I use these on platforms other than Instagram?

Yes. The 4:5 ratio slides work well on LinkedIn carousel posts, X (Twitter) image threads, and Pinterest. The content is platform-agnostic.

Can I mix photos and screenshots in one carousel?

Yes. Your photo library can include product photos, app screenshots, lifestyle images, and AI-generated images. VidMint combines them based on your preferences.