Gemini Social Media Caption Generator (All Platforms) Prompt
Generate platform-optimised captions for any post across Instagram, Twitter/X, LinkedIn, TikTok, and Facebook.
Category
📱 Social Media
Difficulty
Beginner
Models
3
Last Updated
2026-06-29
Works with
📄 Example output
⚠️ Common Mistakes
❓ FAQ
⚙️ Fill in your variables
📋 Prompt
You are a social media copywriter who has written captions for brands with 1M+ followers across every major platform.
Post content: [describe the post — image, video, or text]
Brand voice: [professional/playful/inspirational/educational/bold/minimal]
Goal: [engagement/traffic/sales/brand awareness/followers]
Platforms: [Instagram/Twitter/LinkedIn/TikTok/Facebook/all]
Task: Write platform-optimised captions:
INSTAGRAM:
- Caption (first 125 chars visible before 'more'): The hook
- Full caption: Story/value/CTA
- Hashtags: 5 niche + 3 medium + 2 broad
TWITTER/X:
- Tweet (under 280 chars): Standalone value — links work in the tweet
- Thread starter option if topic warrants depth
LINKEDIN:
- First 3 lines (hook before 'see more')
- Professional tone | 3-5 hashtags max | Link in first comment
TIKTOK:
- Short and conversational | 1-2 hashtags | CTA that drives saves or follows
FACEBOOK:
- Conversational | Question to prompt comments | Link in first comment
For EACH: explain the platform-specific choice made
Post content: [describe the post — image, video, or text]
Brand voice: [professional/playful/inspirational/educational/bold/minimal]
Goal: [engagement/traffic/sales/brand awareness/followers]
Platforms: [Instagram/Twitter/LinkedIn/TikTok/Facebook/all]
Task: Write platform-optimised captions:
INSTAGRAM:
- Caption (first 125 chars visible before 'more'): The hook
- Full caption: Story/value/CTA
- Hashtags: 5 niche + 3 medium + 2 broad
TWITTER/X:
- Tweet (under 280 chars): Standalone value — links work in the tweet
- Thread starter option if topic warrants depth
LINKEDIN:
- First 3 lines (hook before 'see more')
- Professional tone | 3-5 hashtags max | Link in first comment
TIKTOK:
- Short and conversational | 1-2 hashtags | CTA that drives saves or follows
FACEBOOK:
- Conversational | Question to prompt comments | Link in first comment
For EACH: explain the platform-specific choice made
INSTAGRAM:
Hook (125 chars): '200+ AI prompts. Free forever. 👆'
Full caption:
'Most people using AI get mediocre output — not because the AI is bad, but because the prompt is. We built a free library of professional-grade prompts for ChatGPT, Claude, and Gemini.
Copy any prompt in 30 seconds. No account needed. 50,000+ professionals use it.
→ Link in bio'
Hashtags: #aitools #promptengineering #chatgptprompts #claudeai #aiproductivity + #artificialintelligence #contentcreators #digitaltools + #ai #technology
TWITTER/X:
'I made a free library of 200+ AI prompt templates for ChatGPT, Claude, and Gemini. Copy any in 30 seconds. No login. toolsnova.net'
[Link in tweet — unlike Instagram, links on X get clicks]
LINKEDIN:
'Most people using AI get inconsistent results.
Not because the AI is bad — because the prompt is.
We built a free library of 200+ professional AI prompt templates. Tested, with example outputs. No account needed.
What AI task would you most want a template for? Drop it below 👇'
[Link in first comment — body links suppress organic reach]
Hashtags: #aitools #productivity #chatgpt
TIKTOK:
'Free AI prompts that actually work ✅ no login needed, copy in 30 sec #aitools #chatgpt'
FACEBOOK:
'We just launched a free library of 200+ AI prompt templates. Works with ChatGPT, Claude, and Gemini. No account needed. What's the AI task you've tried and couldn't quite nail? Drop it below — I'll try to point you to the right prompt. 👇'
[Link in first comment]
Hook (125 chars): '200+ AI prompts. Free forever. 👆'
Full caption:
'Most people using AI get mediocre output — not because the AI is bad, but because the prompt is. We built a free library of professional-grade prompts for ChatGPT, Claude, and Gemini.
Copy any prompt in 30 seconds. No account needed. 50,000+ professionals use it.
→ Link in bio'
Hashtags: #aitools #promptengineering #chatgptprompts #claudeai #aiproductivity + #artificialintelligence #contentcreators #digitaltools + #ai #technology
TWITTER/X:
'I made a free library of 200+ AI prompt templates for ChatGPT, Claude, and Gemini. Copy any in 30 seconds. No login. toolsnova.net'
[Link in tweet — unlike Instagram, links on X get clicks]
LINKEDIN:
'Most people using AI get inconsistent results.
Not because the AI is bad — because the prompt is.
We built a free library of 200+ professional AI prompt templates. Tested, with example outputs. No account needed.
What AI task would you most want a template for? Drop it below 👇'
[Link in first comment — body links suppress organic reach]
Hashtags: #aitools #productivity #chatgpt
TIKTOK:
'Free AI prompts that actually work ✅ no login needed, copy in 30 sec #aitools #chatgpt'
FACEBOOK:
'We just launched a free library of 200+ AI prompt templates. Works with ChatGPT, Claude, and Gemini. No account needed. What's the AI task you've tried and couldn't quite nail? Drop it below — I'll try to point you to the right prompt. 👇'
[Link in first comment]
🏆
💡 Pro Tips
Best model for this prompt
ChatGPT
ChatGPT (GPT-4o / GPT-5)
Every platform has a different audience contract — LinkedIn is professional value, TikTok is utility or entertainment, Twitter is conversation
Never post the same caption across all platforms — voice, length, and link strategy all differ
First sentence of every caption is most important — it appears in preview and determines whether the rest gets read
Save best-performing captions as templates — if a structure works once, it will likely work again
Hashtag stuffing on LinkedIn — 3-5 relevant hashtags; 20 looks like spam
Links in Instagram post body — not clickable; always put in bio and reference in caption
Same length everywhere — Twitter must be short, Facebook can be longer, LinkedIn medium, TikTok very short
Generic CTA — specific CTAs consistently outperform 'check the link in bio'
- How many hashtags?Instagram: 5-10. LinkedIn: 3-5. Twitter/X: 0-2 (hashtags reduce engagement on X; use only for events or trending topics). TikTok: 3-5. Facebook: 0-3.
- Same posting time on all platforms?Convenient but not optimal. Check each platform's analytics for when your audience is active — varies significantly by niche. Scheduling tools like Buffer or Later help.
- ChatGPT or Claude?ChatGPT for short punchy captions matching social media energy. Claude for LinkedIn posts requiring sustained professional argument. ChatGPT's natural brevity wins for Instagram/TikTok/Twitter.
- Engagement rate vs follower count?Engagement rate matters more for monetisation. 1,000 highly engaged followers convert at higher rates than 10,000 passive ones. Focus on saves and shares — the highest-value actions on most platforms.