How to Create Before After Comparison Images
Complete Tutorial (5 Minutes)
Learn to create professional comparison images for Instagram, Twitter, Pinterest
100% free • No signup • No watermark • Works with Midjourney, DALL-E, Stable Diffusion
📚 What You'll Learn
Fast Workflow
Create comparisons in under 2 minutes from start to finish
AI Prompt Display
Showcase your Midjourney, DALL-E prompts with text overlay
Social Media Ready
Export in perfect sizes for Instagram, Twitter, Pinterest
🎯 Prerequisites
What you'll need:
- 2 images (Before and After) - JPG, PNG, or WEBP format
- Any modern web browser (Chrome, Edge, Safari, Firefox)
- Optional: AI prompts if you used Midjourney, DALL-E, or Stable Diffusion
No account required • No installation • Works on mobile & desktop
Upload Your Before and After Images
Click or drag to upload your images to the comparison tool
How to Upload:
Drag images directly from your file explorer to the upload areas
Click the upload boxes and select files from your computer or phone
Copy image (Ctrl+C) then click upload area and paste (Ctrl+V)
💡 Pro Tips:
- Use same dimensions: Crop both images to identical sizes for best results
- Supported formats: JPG, PNG, WEBP (PNG recommended for quality)
- File size: Up to 10MB per image for smooth performance
- AI tool images: Works perfectly with Midjourney, DALL-E, Stable Diffusion, Nano Banana
Choose Your Layout (Side-by-Side or Top-Bottom)
Select the perfect layout based on your image orientation and platform
↔️ Side-by-Side
Best for horizontal images and desktop viewing
- Landscape photos (width > height)
- Twitter posts (1200×675)
- Desktop monitors
- Detailed comparisons
↕️ Top-Bottom
Best for vertical images and mobile viewing
- Portrait photos (height > width)
- Instagram Stories (1080×1920)
- Pinterest Pins (1000×1500)
- Mobile scrolling
✅ Layout Decision Guide:
| Platform | Recommended Layout | Preset Size |
| Instagram Feed | Side-by-Side or Top-Bottom | 1080×1080 (Square) |
| Instagram Stories | Top-Bottom (Vertical) | 1080×1920 (9:16) |
| Twitter/X | Side-by-Side | 1200×675 (16:9) |
| Top-Bottom (Vertical) | 1000×1500 (2:3) |
Add AI Prompt Text Overlay (Optional)
Showcase your creative process for AI-generated images
When to Add AI Prompts:
- Midjourney, DALL-E, Stable Diffusion, Nano Banana images
- Showing prompt evolution (basic → refined prompt)
- Building your AI art portfolio
- Teaching prompt engineering
- Comparing AI tool outputs
- Photo editing comparisons (Photoshop, Lightroom)
- Non-AI transformations (fitness, renovation)
- Simple before/after showcases without AI involvement
AI Prompt Examples:
After: "a majestic persian cat, professional photography, 8k --v 6"
Generate and Preview Your Comparison
Create your comparison instantly and check the quality score
Generating Your Comparison:
- Click "Generate Comparison" button (or press Ctrl+Enter / Cmd+Enter)
- Wait 1-3 seconds for processing (runs locally in your browser)
- Preview appears showing your before/after comparison
- Check quality score - tool analyzes image dimensions and alignment
✅ Understanding Quality Score
Images are same size, perfectly aligned. Ready to download!
Slight size difference. Tool auto-aligns but consider cropping for best results.
Significant size difference. Crop both images to same dimensions before uploading.
⚡ Speed Tips:
- Keyboard shortcut: Press Ctrl+Enter (Windows) or Cmd+Enter (Mac) to generate
- Typical speed: 1-2 seconds on desktop, 3-5 seconds on mobile
- No upload wait: Everything processes locally in your browser (100% private!)
Download for Instagram, Twitter, Pinterest, or TikTok
Export in perfect sizes for your social media platform
Download Options:
High-quality PNG export. Desktop: up to 4000px, Mobile: optimized to 1500px
Perfect for Instagram feed posts. No cropping required!
Optimal for Twitter/X tweets. Maximum timeline visibility.
Perfect for Pinterest vertical pins. 2:3 aspect ratio performs best.
🎉 You're Done!
Your before/after comparison is ready to share:
- No watermark (watermark is optional - can be toggled off)
- 100% free (no hidden fees or premium plans)
- 100% private (images never uploaded to our servers)
- Ready for social media (no additional editing needed)
💡 Pro Tips for Better Comparisons
🎯 For Best Quality Results
- Use identical dimensions: Crop both images to same size before uploading
- Use PNG format: Best quality, no compression artifacts
- High resolution: At least 1080px on shortest side for social media
- Check quality score: Aim for 90%+ before downloading
⚡ For Faster Workflow
- Keyboard shortcuts: Ctrl+Enter to generate, Ctrl+V to paste images
- Drag & drop: Faster than clicking to browse files
- Use Reset button: Quickly clear and start new comparison (remembers your settings)
- Batch workflow: Prepare all images first, then create comparisons one by one
📱 For Maximum Engagement
- Add AI prompts: Increases engagement by 30-50% on AI art posts
- Use platform presets: Instagram, Twitter, Pinterest - no cropping needed
- Post timing: Tuesday-Friday 11am-1pm and 7pm-9pm perform best
- Use hashtags: #beforeandafter #transformation #AIart #midjourney (see FAQ for more)
⚠️ Common Mistakes to Avoid
This causes blurriness and low quality score. Solution: Crop both images to identical dimensions before uploading.
Watermark is optional and ON by default. Solution: Uncheck "Show watermark" in advanced options before generating.
Vertical images need top-bottom layout for Instagram Stories/Pinterest. Solution: Follow our layout guide in Step 2.
Images are processed locally - we can't recover them after page close. Solution: Download immediately after generating.
❓ Quick FAQ
Is this tutorial for beginners?
Yes, absolutely! This tutorial is designed for complete beginners. No prior experience needed. The tool is intentionally simple - just upload, click generate, and download. Takes 5 minutes to learn.
Do I need Photoshop or design skills?
No! This tool requires zero design skills or software knowledge. It's specifically built to be beginner-friendly as an alternative to complex tools like Photoshop or Canva. If you can upload files and click buttons, you can use this tool.
Can I really create comparisons in under 2 minutes?
Yes! Once you're familiar with the workflow:
• Upload 2 images: 15 seconds
• Choose layout: 5 seconds
• Add prompt (optional): 10 seconds
• Generate: 3 seconds
• Download: 5 seconds
Total: ~40 seconds for subsequent comparisons after your first one.
What if I get stuck?
Check our complete FAQ (30+ questions) for detailed troubleshooting.
Common issues are usually:
• Image size mismatch (crop to same dimensions)
• Wrong layout for platform (see Step 2 guide)
• Browser compatibility (use latest Chrome/Edge)
Still stuck? Email us: [email protected]
🚀 Next Steps
Try the Tool Now
Put your new skills to practice. Create your first comparison in 5 minutes!
Launch Tool →Read Complete FAQ
30+ questions answered: privacy, AI tools, social media, troubleshooting
View FAQ →Learn AI Prompts
100+ curated Nano Banana prompt examples for better AI art
View Prompts →Ready to Create Your First Comparison?
Now that you know how, put your skills to practice!
Launch Free Tool (No Signup) →100% free • No watermark • Works with Midjourney, DALL-E, Stable Diffusion • 100% private