0% Server Upload — Stitch screenshots and photos into one image locally
Merge & Stitch Photos Vertically or Side-by-Side
Combine multiple screenshots, receipts, or Before/After photos into a single vertical strip or horizontal collage. Automatic width alignment and custom spacing included.
Drag & Drop 2 or more images to merge here
Supports JPG, PNG, WEBP — reorder and stitch instantly
100% Browser LocalZero Server UploadBatch ZIP Download
Stack screenshots top-to-bottom for long strips or place photos side-by-side for comparisons.
Smart Auto-Fit Alignment
Automatically normalizes widths or heights so mixed-resolution images line up cleanly without jagged edges.
Custom Gap & Background
Add clean pixel spacing between photos with white, dark, or transparent backgrounds.
When to Use Vertical vs. Horizontal Image Stitching
Combining separate photos into a single image makes sharing chat logs, expense receipts, and product comparisons much easier.
Layout 1
Vertical Stitch (Long Screenshot Strip)
Ideal for step-by-step tutorials, webtoon panels, and multi-page mobile screen captures.
Layout 2
Horizontal Stitch (Side-by-Side Comparison)
Place two or more photos next to each other for instant Before & After visual comparisons.
Tips for Clean Image Merging
Preview your combined canvas before downloading.
Enable Auto-Fit so different-sized photos align to a uniform width
Add a 10px–20px gap for a clean storyboard frame look
Download the stitched result instantly in crisp JPG or PNG format
Frequently Asked Questions
Q. Are my personal photos or ID scans uploaded to any server?
No, never. SafeIMG runs 100% inside your browser's local memory using HTML5 Canvas. Not a single byte of your photos ever leaves your device.
Q. Can I merge images that have different widths and heights?
Yes! Our Auto-Fit option proportionally scales images to match the target width or height so the final stitched image looks completely uniform.
Q. Is there any file size limit or daily usage cap?
Because there are zero server costs on our end, this tool is 100% free with unlimited usage and no file size limits.
Rate this Tool
4.9 / 5(1,488 votes)
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Technical Whitepaper & User Guide
Image Merging & Stitching Architecture Guide
Stitching chat screenshot strips, creating side-by-side Before & After comparisons, or combining multiple receipts into a single clean image is simple with SafeIMG. Adjust margins, background colors, and auto-fit dimensions seamlessly without heavy desktop software.
1. Intelligent Auto-Dimension Normalization
Stitching images of mismatched resolutions leaves ugly gaps or disproportionate panels. SafeIMG auto-scales all images to matching widths (vertical mode) or heights (horizontal mode) while preserving individual aspect ratios.
2. Merging Modes & Optimal Setups
Stitching Direction
Recommended Configuration
Typical Application
Auto-Fit Width ON + 0-10px gap
Long chat screenshots, webtoon panels, multiple receipt slips
Horizontal Comparison
Auto-Fit Height ON + 16-20px white gap
Before & After transformations, product color variant lineups
Seamless Connection
Auto-Fit ON + 0px gap
Reconnecting segmented panorama captures and continuous maps
3. Merging Best Practices
Vertical Scroll Strip
✓
Clean white borders: Adding 10-20px white margins creates a professional, framed magazine layout.
✓
Multi-page PDF alternatives: If you require separate pages rather than one long image, use companion tool SafePDF (safepdfunlock.com).
✓
Optimizing combined image weight: If stitching 10 photos produces a heavy file, pass it directly to [Compress Image] to trim megabytes.
