Instagram Post Generator
Create realistic Instagram post mockups for presentations, concept proofs, and social media planning.
Last updated: March 25, 2026
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Buy me a coffeeWhat is Instagram Post Generator?
An Instagram post mockup generator creates a visual representation of how an Instagram post will look — including the profile photo, username, location, caption, like count, comment snippet, and timestamp — before the content is published. This is a wireframing and communication tool used by social media managers across the content planning and approval process, designers pitching content strategy, marketing teams creating campaign presentations, and UX designers prototyping social features.
Unlike creating real Instagram posts (which requires a connected account and the Instagram app), a mockup generator lets you design, iterate, and preview how a post will appear — both the feed view and stories view — without publishing. Teams use this in Figma presentations, client proposal decks, and content calendar tools to communicate exactly what will be published before the live post goes up. All rendering uses HTML Canvas in the browser — no Instagram account, no login, no data sent to Meta.
How to Use Instagram Post Generator
Upload a post image (square 1:1, portrait 4:5, or landscape 1.91:1 aspect ratio)
Upload a profile photo and enter the username, verified badge status, and location
Type the caption with hashtags and emoji (the tool counts characters and suggests hashtag count)
Set the like count, view count, and add up to 2 sample comments for realism
Click "Download" to save the post mockup as a PNG image for use in presentations or content decks
Common Use Cases
- Creating a client content proposal showing how their approved posts will appear in the feed
- Building a content calendar visual deck with mockups of planned posts for upcoming campaigns
- Prototyping an Instagram Stories and Reels feature flow for a social media app UX project
- Creating a "what our social presence could look like" visual for a pitch deck to attract investors
- Designing and reviewing caption and hashtag strategy on a visual mockup before publication
- Creating training materials showing social media managers what well-formatted posts look like
- A/B testing two potential caption styles visually before deciding which to publish
- Building a portfolio piece showing a social media strategy concept with visual post previews
Example Input and Output
Mockup configuration for a product launch Instagram post:
Username: @brandname
Verified: No
Location: San Francisco, CA
Aspect ratio: Square (1:1), 1080×1080px
Caption: "Introducing our new product 🚀
Available now — link in bio.
#launch #product #new"
Likes: 1,247
Comments shown: "Love it! 🔥"✅ Mockup generated: instagram_post_brandname.png
Preview includes:
✓ Profile photo + username header
✓ Location tag below username
✓ Post image (square 1:1 crop)
✓ Heart / Comment / Share / Bookmark icons
✓ "1,247 likes" text button
✓ Caption with hashtags (blue styled)
✓ "View all X comments" prompt
✓ Sample comment shown
✓ Timestamp ("2 hours ago")Total Privacy
All mockup rendering happens locally in your browser using Canvas API. Uploaded images and post details are never sent to our servers, Instagram, or Meta. This tool has no connection to any Instagram API.
Using Mockups in Client Proposals
Add a clear "MOCKUP — NOT A LIVE POST" watermark when sharing mockups externally to prevent confusion. Present mockups in a slide deck alongside the content rationale, target audience, and expected engagement metrics. A full content calendar mockup deck showing 10–12 planned posts is a highly effective deliverable for social media strategy proposals.
Instagram Post Specifications Reference
Official Instagram content specs: Image formats: JPG, PNG. Max file size: 8MB. Minimum width: 320px; maximum: 1080px. Supported aspect ratios: 1.91:1 to 4:5. Video: up to 60 seconds for feed, up to 90 seconds for Reels. Caption: up to 2,200 characters. Alt text: up to 200 characters (manually set via "Advanced Settings"). Hashtags: up to 30 per post.
Frequently Asked Questions
What is the official Instagram post aspect ratio?
Does this generate real Instagram posts?
Is the Instagram UI design accurate?
How many hashtags should I show in the caption?
Can I create an Instagram Stories mockup?
What does the "meta description" of an Instagram post affect?
How This Tool Works
The mockup generator renders an Instagram-UI-styled HTML template on a Canvas element. The profile photo is drawn via ctx.drawImage() clipped to a circle. The post image is drawn at the specified aspect ratio below the profile header. Text elements (username, caption, like count) are rendered using ctx.fillText() with Instagram-approximate font/color values. The completed canvas is exported as PNG for download.
Technical Stack
Image Workflow
Compress, convert, resize, crop, and prepare assets for websites and social platforms in one pass.