Documentation
Get started with Collage Pro and easily create professional photo collages and long image posters
1Quick Start
- 1
Choose Mode
Select Photo Collage or Long Image mode at the top
- 2
Upload Images
Click on image areas or drag images to their positions, supports JPG, PNG, WEBP formats
- 3
Adjust Layout
Select preset layouts or customize spacing, border radius and other parameters
- 4
Export Work
Click download button, choose format (PNG/JPG/WEBP) and save locally
2Feature Details
Photo Collage Mode
- •Support 1-16 photos in various layout combinations
- •100+ preset layout templates (square, portrait, landscape)
- •Smart layout: Auto-recommend layouts based on uploaded image count
- •Adjustable aspect ratios (square, 4:3, 16:9, etc.)
- •Custom background color or upload background image
Long Image Mode
- •Support unlimited horizontal or vertical stitching
- •Drag to reorder: Easily adjust image order
- •Batch upload: Add multiple images at once
- •Set image spacing and overall padding
- •Perfect for tutorials, comics, timelines and other long content
Image Editing
- Position Adjustment: Drag images to change position and precisely locate display area
- Zoom Function: 0.5x - 3x free zoom, highlight key content
- Rotation Function: -180° to +180° precise rotation adjustment
- One-click Reset: Quickly restore image default state
Export Settings
- Multiple Formats: PNG, JPG, WEBP formats available
- •PNG: Lossless compression, suitable for transparent backgrounds or high quality scenarios
- •JPG: Universal format, smaller file size, suitable for social media sharing
- •WEBP: Modern format, high compression ratio with good quality
- •Adjustable export quality (0.1 - 1.0), balance file size and clarity
3Advanced Tips
💡 Precise Control
After selecting an image, use the numerical sliders on the right to precisely adjust position, zoom and rotation angle for the best visual effect.
🎨 Background Matching
Using solid background colors can make photos stand out more, while uploading background images creates richer visual layers. Recommend using low saturation background images.
📱 Aspect Ratio
For WeChat Moments grid, recommend square (1:1) layout, Instagram posts recommend 4:5 portrait, horizontal display choose 16:9.
⚡ Quick Operations
Long image mode supports drag-to-reorder, directly drag images to adjust order. During batch upload, images will be automatically arranged in selection order.
4Use Cases
Social Media
- • WeChat Moments grid photos
- • Instagram collage posts
- • Weibo image combinations
- • Xiaohongshu note images
Content Creation
- • Product showcase posters
- • Tutorial step images
- • Travel photo walls
- • Event review collections
Professional Use
- • Portfolio showcase
- • Design comparison images
- • Product multi-angle display
- • Timeline records
5FAQ
What image formats are supported?▼
Collage Pro supports JPG, JPEG, PNG, WEBP, and other common image formats. For best results, upload the original or highest-resolution files available, then choose PNG, JPG, or WEBP based on where you plan to publish.
Will images be uploaded to servers?▼
No. Collage creation, cropping, zooming, rotation, and export all run locally in your browser. Your image data is not uploaded to Collage Pro servers. Export or save a local project before refreshing or switching browsers.
What is the quality of exported images?▼
Export quality depends on canvas size, source image resolution, export format, and quality settings. PNG is best for crisp text and hard edges, while JPG and WEBP are practical for photo-heavy layouts. For social publishing, use quality settings of 0.9 or higher.
Can I save my designs?▼
Yes. Use the local Project Library to save editable collages in your current browser with IndexedDB, then continue adjusting images, layouts, and styles later. Collage Pro does not upload your images to cloud storage, so export finished work before clearing browser data.
Does it support mobile devices?▼
Yes. Collage Pro is responsive and works on phones, tablets, and desktop browsers. Mobile is great for quick layouts and exports; larger multi-image projects are usually easier on a tablet or desktop.
What's the maximum number of images that can be stitched?▼
Photo collage mode supports up to 16 images in a single layout. Long image stitching has no fixed item limit, but large projects depend on device memory; for stable exports, we recommend keeping each stitch under 50 images.
Can I use Collage Pro for free?▼
Yes. Core collage, long-image stitching, basic editing, and export features are free with no sign-up required. Pro unlocks extra templates, brand kit tools, and productivity features for users who create frequently or need consistent branding.
Does it work in both English and Chinese?▼
Yes. The homepage, editor, articles, tool pages, and docs are available in both English and Chinese, which is helpful for multilingual teams and creators publishing to global platforms.
Ready to start creating?
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