Caption generator
What does this tool do?
Writing captions takes longer than it should. This tool reads your topic and generates 3 different caption variants formatted for the platform you're posting on — Instagram, X, LinkedIn, Facebook, or TikTok. Each variant takes a different angle so you can pick the one that fits the moment.
How each platform is formatted
- Instagram — 1-3 short sentences plus 8-12 hashtags. Visual and conversational.
- X (Twitter) — Under 280 characters including hashtags. Punchy and opinionated.
- LinkedIn — 2-4 sentences. Professional and insightful. Fewer hashtags.
- Facebook — Friendly, community-oriented, ends with a question to drive comments.
- TikTok — Short hook-driven text plus 5-7 hashtags. Sounds like a creator, not a brand.
Frequently asked questions
Is this tool free?
Yes. It runs on Cloudflare Workers AI with a free daily quota. Normal use won't hit limits.
Can I edit the captions?
You should. The generated captions are a starting point. Add specific details, adjust the hashtags to match your niche, and replace any placeholders with real information.
Will the hashtags perform well?
Hashtags generated by AI are reasonable but generic. For best results, mix AI-generated hashtags with 2-3 niche hashtags specific to your account or community. Generic hashtags like #love or #instagood attract bots, not real engagement.
Is my input stored?
No. Your topic and details are sent to the AI model for processing and discarded immediately after. Nothing is stored, logged, or used for training.
Can it write in other languages?
The model can write in most major languages. Just enter your topic in that language and the output will follow. The interface itself is currently English and Simplified Chinese.