PostNitro

PostNitro is an AI tool for creating social media carousels. Give it a topic, an article, or a tweet thread, and it will generate multi-page carousels in your brand colors, single-image posts, or short videos—then schedule and publish them directly to LinkedIn, Instagram, TikTok, Threads, Facebook, and Pinterest.

With 100+ built-in templates, support for brand kits and team spaces, and a drag-and-drop editor for customizing designs yourself. This time we’ve added a new capability “for agents”: AI assistants like Claude and ChatGPT can be connected with one-click authorization—just say a sentence in the chat, and they’ll design and publish the post for you.

There’s a free plan and no card required. It’s ideal for professionals building a personal brand on LinkedIn, small marketing teams, and social media management agencies, with a visual and copy style that leans toward international aesthetics.