AI Social Media Post Generator: Ready-Sized Graphics for Every Feed
VdoBloom’s AI social media post generator creates the image for a post from a short description. Say what the post is about, choose the platform (Instagram, Facebook, X/Twitter, LinkedIn or TikTok) and the tool renders graphics in that platform’s shape: square for Instagram, 4:5 portrait for Facebook, 16:9 landscape for X and LinkedIn, 9:16 vertical for TikTok. You get up to four variations per run, and you can add a photo of your real product so it appears in the post.
Is it free? New accounts get 10 free credits to try it. Each graphic costs the credit price of the AI model you choose, for example 2 credits with Seedream 5 Flash, 3 with Nano Banana 2.1 or 6 with Nano Banana. After that, the Lite pack is 300 credits for $19.50 one-time (one-time credits never expire) or $15 a month. Every run shows its cost before you generate.
It is made for small businesses, online shops, creators and social media managers who need a steady supply of on-brand visuals. It produces the graphic; for the caption and hashtags, use VdoBloom’s AI Chat.
Examples
Instagram post
Story design
Brand post
How it works
- 1
Describe the post
Write what the graphic should say or show: “20% off all candles this weekend”, “quote: progress over perfection”, “we’re hiring a barista”.
- 2
Choose platform, template and style
Pick the platform, a template (Quote, Announcement, Promotion, Educational, Lifestyle or Minimalist), a style and a colour scheme. Add your brand name if you want it on the post.
- 3
Add a product photo (optional)
Upload a photo of your product to feature it in the post. Product photos work with Nano Banana 2, Nano Banana 2.1, Nano Banana 2 Lite and Nano Banana Pro.
- 4
Generate, pick and post
Create 1 to 4 variations, compare them and download your favourite, already in the right shape for the platform you chose.
Why use this tool
Sized for each platform
The platform you pick sets the shape: 1:1, 4:5, 16:9 or 9:16, so the graphic fits the feed without cropping.
Your real product in the post
Upload a product photo and the Nano Banana 2 family uses it as a reference, so the item in the graphic is yours, not an AI lookalike.
Six post templates
Quote, Announcement, Promotion, Educational, Lifestyle and Minimalist templates steer the layout toward the job the post has to do.
Batch up to 4 per run
Get several options from one description, which makes filling a week of posts quick.
Which platforms and sizes does it make?
Each platform option maps to an aspect ratio, so the downloaded image drops straight into the post composer:
| Platform option | Shape generated | Typical use |
|---|---|---|
| 1:1 square | Feed posts and carousel slides | |
| 4:5 portrait | Feed posts that fill more of a phone screen | |
| X (Twitter) | 16:9 landscape | Post images and announcements |
| 16:9 landscape | Company and personal posts | |
| TikTok | 9:16 vertical | Photo posts, and also Instagram or Facebook Stories |
Which AI model should I use for social posts?
Credits are charged per graphic. Posts with a headline or offer need a model that handles text well; product posts need one that accepts a product photo.
| Model | Credits per post | Product photo | Good for |
|---|---|---|---|
| Seedream 5 Flash | 2 | No | Fast, low-cost drafts and backgrounds |
| Nano Banana 2.1 | 3 | Yes | Everyday posts and product posts at a low price |
| WAN 2.7 Image | 4 | No | Low-cost lifestyle and illustrated visuals |
| Nano Banana | 6 | No | Dependable all-round post graphics |
| Flux Kontext Pro | 7 | No | Crisp, high-quality imagery |
| Nano Banana 2 Lite | 8 | Yes | A lighter Nano Banana 2 for product posts |
| Qwen Image 2.0 Pro | 12 | No | Quote cards and text-heavy posts |
| Nano Banana 2 | 15 | Yes | Premium product posts |
| Nano Banana Pro | 18 | Yes | Top-tier detail and lettering |
Read more: Nano Banana 2.1 · Seedream 5 Flash · Best AI model for text in images
How much does it cost to make social media posts with AI?
Multiply the model’s price by the number of posts you generate:
- One-time credit packs never expire; subscription credits reset each billing cycle.
- If a run fails and returns no image, its credits are refunded automatically.
| What you generate | Credits used | From the 10 free credits | From a 300-credit Lite pack |
|---|---|---|---|
| 1 post with Seedream 5 Flash | 2 | 5 posts | 150 posts |
| 4 posts with Nano Banana 2.1 | 12 | 3 single posts | 100 posts |
| 4 posts with Nano Banana | 24 | 1 single post | 50 posts |
| 1 product post with Nano Banana Pro | 18 | Not enough | 16 posts |
Read more: Plans and credit packs
Does it write the caption too?
No. This tool makes the image, which is the part most caption generators leave out. Many top results for “AI social media post generator” only write text. To get both, generate the graphic here and ask VdoBloom’s AI Chat for a caption, a hook and hashtags in your brand voice, then post them together.
Read more: AI Chat
Social media post ideas to try
Pair a clear description with the template that matches the goal of the post:
- Promotion: “Weekend sale, 20% off all scented candles, cosy autumn table” on Instagram, Bold, orange.
- Announcement: “New store opening Saturday 10am, downtown” on Facebook, Modern, blue.
- Quote: “Progress over perfection” on LinkedIn, Minimalist, black.
- Educational: “3 tips to keep houseplants alive in winter” on Instagram, Playful, green.
- Lifestyle: “Morning coffee on a balcony with our travel mug” plus your product photo, on TikTok, Elegant.
- Hiring: “We’re hiring a part-time barista, apply in store” on LinkedIn, Professional, purple.
Tips for scroll-stopping AI post graphics
Small changes in the prompt make the biggest difference:
- Keep on-image text short, ideally under eight words; put the details in the caption.
- Put the exact headline in quotes and proofread it in the result.
- Lead with one subject: a product, a person or a single bold statement.
- Use the same style and colour scheme every time so your feed looks consistent.
- Draft with Seedream 5 Flash or Nano Banana 2.1, then rerun your favourite idea on a premium model.
- Add your product photo for any post that sells something, so customers see the real item.
Limits: what it doesn’t do
Good to know before you plan a content calendar:
- It makes still images, not videos or animated posts.
- It doesn’t write captions or hashtags, and it doesn’t schedule or publish posts.
- Each run is one platform; for several platforms, run the same description again with another platform selected.
- There is no drag-and-drop editor; you change a post by editing the description and regenerating.
- Small or long text can be misspelled, so proofread before posting.
Who uses it
Online shops use it for product promotions and sale posts. Local businesses use it for opening hours, events and hiring notices. Coaches and consultants use quote and educational cards to stay visible on LinkedIn and Instagram. Creators and social media managers use it to fill gaps in a content calendar without booking a shoot.
For short video posts, VdoBloom’s video tools turn the same product or idea into Reels and TikToks.
Read more: AI social media designer guide · AI video generator for Instagram Reels · AI video generator for TikTok
Frequently asked questions
Is the AI social media post generator free?
You can try it with the 10 free credits every new account gets. A post costs 2 credits with Seedream 5 Flash, so that is five graphics. After that the Lite pack is 300 credits for $19.50 one-time, and one-time credits never expire.
How do I create a social media post with AI?
Describe the post, choose the platform, template, style and colour, optionally add your brand name and a product photo, pick an AI model and the number of variations (1 to 4), then generate. Download the graphic you like; it is already in the platform’s shape.
Which platforms does it support?
Instagram (1:1 square), Facebook (4:5 portrait), X/Twitter and LinkedIn (16:9 landscape) and TikTok (9:16 vertical). The TikTok option also suits Instagram and Facebook Stories because they share the 9:16 shape.
Does it write captions and hashtags?
No, it generates the post image. Write the caption, hook and hashtags with VdoBloom’s AI Chat, then publish them together with the graphic.
Can I put my own product in the post?
Yes. Upload a product photo in the optional field and choose Nano Banana 2, Nano Banana 2.1, Nano Banana 2 Lite or Nano Banana Pro. The model uses your photo as a reference so the real product appears in the graphic.
Can I make Instagram Story graphics?
Yes. Select the TikTok platform option, which renders a 9:16 vertical image, the same shape Instagram and Facebook Stories use.
How many posts can I generate at once?
Up to four per run. The cost is the model’s price per image multiplied by the count, so four Nano Banana 2.1 posts use 12 credits.
Which AI model is best for text on social posts?
For quote cards and headline-led posts, try Qwen Image 2.0 Pro (12 credits) or Nano Banana Pro (18 credits). Keep the on-image text short and proofread the result.
Can it schedule or publish posts for me?
No. VdoBloom creates the graphic; you download it and post it yourself or upload it to your scheduling tool.