Merge JPG Images
Combine photos into a horizontal strip, vertical strip, or grid collage. Processing happens locally in your browser, so your files never leave your device.
How to Merge JPG Files
Upload
Drop two or more images you want to combine.
Arrange
Pick the layout, adjust spacing, and reorder images.
Merge & Download
Click "Create merged image" and save the result instantly.
How Merging Works
Each JPG is decoded as raster graphics, drawn into a single Canvas surface, then re-encoded as JPG or PNG. This is not file renaming; it creates a new bitmap. Compression ratio and visible artifacts depend on the export settings. Metadata (including EXIF) is not copied by default for privacy.
Vectorization is not performed. If you need vector output, export the merged image and convert to SVG separately.
Common Use Cases
📱 Social Media
- Instagram Stories: Vertical strip layout, 1080×1920px, 85% quality
- Facebook Posts: Horizontal strip, 1200×630px optimal
- Pinterest Pins: Vertical collage, 1000×1500px, 90% quality
- Twitter Headers: Horizontal merge, 1500×500px
🖨️ Print & Design
- Photo Strips: Family photo collages, event memories
- Before/After: Side-by-side comparisons
- Product Sheets: Multiple product angles in one image
- Portfolio Pages: Grid layout for design showcases
💼 Professional
- Real Estate: Property photo compilations
- E-commerce: Multi-angle product views
- Reports: Chart and graph compilations
- Presentations: Screenshot collages
Best Practices for Merging
📐 Resolution Matching
For best results, use images with similar resolutions. The tool auto-scales to the smallest dimension, which may reduce quality if images vary greatly in size.
🎨 Quality Settings
Use 90-95% quality for print, 80-85% for web/social media, and 70-75% for email attachments. Lower quality reduces file size but increases compression artifacts.
🔄 Format Selection
Choose JPG for photographs with gradients and complex colors. Use PNG when you need transparency or have images with text, logos, or sharp edges.
⚡ Performance Tips
Merging 10+ large images (>5MB each) may slow down older devices. Consider resizing images before merging, or use smaller batches for better browser performance.
Quality & Compression
JPG is lossy while PNG is lossless. Exporting to PNG preserves existing detail without adding new compression loss, but it will not remove prior artifacts.
- Artifacts: blockiness and banding can appear if JPG quality is too low.
- Compression ratio: higher compression lowers file size but increases visible loss.
- Lossless option: choose PNG when you need crisp edges or transparency.
JPG vs PNG Comparison
| Feature | JPG (Input) | PNG (Output) |
|---|---|---|
| Best For | Universal compatibility, Web sharing | Graphics, Logos, Text |
| Compatibility | 100% (All browsers, OS, Apps) | High (All browsers) |
| Transparency | No (Flattened background) | Yes (Alpha channel) |
| Typical Size | Average | Large (Lossless) |
| Compression | Lossy Compression | Lossless Compression |
Frequently Asked Questions
Does merging reduce quality?
Merging itself does not invent detail, but exporting as JPG re-compresses the image and can add artifacts at low quality settings. Use 85-95% quality to minimize visual loss.
What is the max file size?
Up to 50MB per image in modern browsers. Large batches depend on your RAM. If you experience slowdowns, try compressing images first.
Is it secure?
Yes. All processing happens locally in your browser using the HTML5 Canvas API. Files are never uploaded to any server, ensuring complete privacy.
How does the compression work?
JPG uses DCT-based lossy compression, while PNG uses lossless DEFLATE. You choose the output format before export. The quality slider controls JPG compression level (10-100%).
Can I merge different image formats?
Yes! You can merge JPG, PNG, WEBP, and other formats. All images are converted to a common canvas format before merging, then exported as your chosen format (JPG or PNG).
What's the difference between layouts?
Horizontal: Images side-by-side, scaled to same height. Vertical: Images stacked top-to-bottom, scaled to same width. Grid: Auto-arranged in rows/columns based on image count.
Will EXIF data be preserved?
No. For privacy reasons, metadata (EXIF, GPS, camera info) is not copied to the merged output. If you need to remove EXIF data, use our dedicated tool.
Can I undo changes?
You can remove individual images before merging, reorder them by clicking arrows, or use "Clear all" to start over. After creating the merged image, simply adjust settings and click "Create merged image" again.
What are the preset templates for?
Presets auto-configure optimal settings for popular platforms: Instagram Story (vertical, 85% quality), Facebook Post (horizontal, 85%), Pinterest Pin (vertical, 90%, more spacing). Choose "Custom" for manual control.