⚡ Free Tool — Powered by Gemini AI
AI Caption Generator
Platform-specific captions for Instagram, LinkedIn, Twitter/X, TikTok, Facebook, YouTube, Threads & Reddit. Guests get 3/day. Sign in for 15/day free.
Instagram Best Practices
What actually works in 2025
- →Hook in first line (shown before "more" cutoff — make it count)
- →Ideal feed caption: 138–150 characters
- →For carousel or educational posts: up to 300 words with line breaks
- →Add 3–5 relevant, niche hashtags at end (NOT in body)
- →Include a question or CTA to drive comments
🏷 Hashtag rule: 3–5 niche hashtags perform better than 30 generic ones
instagram-caption.txt
2,200 char limit
Your Instagram caption will appear here.
Follows 2025 best practices for Instagram
Char Limit
2,200
Sweet Spot
138–150 chars for feed, longer for carousel
Platform Quick Reference
| Platform | Char Limit | Best Length | Hashtags | Best For |
|---|---|---|---|---|
Instagram | 2,200 | 138–150 chars for feed, longer for carousel | 3–5 niche hashtags perform better than 30 generic ones | Visual storytelling, product launches, lifestyle, behind-the-scenes |
LinkedIn | 3,000 | 150–300 words with line breaks | Max 3 hashtags | Thought leadership, product launches, career milestones, industry insights |
Twitter/X | 280 | Under 240 chars (leave room for RT) | 1–2 hashtags max, or zero for broader reach | Hot takes, announcements, industry commentary, thread hooks |
TikTok | 2,200 | Under 100 chars | 3–5 trending + niche hashtags | Behind-the-scenes, tutorials, trends, entertainment, product reveals |
Facebook | 63,206 | 40–80 words for organic reach | 1–2 hashtags or none | Community building, events, long-form storytelling, local business |
YouTube | 5,000 | First 2–3 lines keyword-rich before "show more" | 3–5 hashtags above title or in description | Tutorials, vlogs, product demos, educational content, brand storytelling |
Threads | 500 | 150–300 chars | No hashtags | Real-time opinions, behind-the-scenes thoughts, conversational content |
Reddit | 40,000 | Title under 300 chars + body that adds clear value | No hashtags | Tool launches, community feedback, genuine insights, AMAs, tutorials |
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8 Platforms
Each with deeply researched 2025 best practices — character limits, hashtag rules, tone guides.
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Gemini Powered
Every caption is generated by Gemini 2.5 Flash — fast, accurate, and human-sounding.
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Char Counter
Real-time character count vs. platform limit with sweet spot guidance.
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Smart Limits
Guests get 3 free/day. Sign in for 15 free generations every day, forever.