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Merge JPG — combine JPG images online

Free online JPG merger. Combine JPG images, join JPEG files, merge photos horizontally or vertically. No upload, instant download, all in browser.

What is a JPG Merger?

A JPG merger is an online tool that combines two or more JPG images into a single image file. Unlike desktop software that requires installation and file uploads, this tool runs entirely in your browser using HTML5 Canvas technology. It reads your JPG images locally, stitches them together vertically or horizontally, and outputs a single merged JPG file — all without sending your images to any server. The result is a combined image that preserves the original quality while giving you a single, convenient file to download, share, or embed.

Merge JPG Features

Combine, join, and stitch JPG images together with these powerful yet simple features.

  1. Vertical & Horizontal Merge: Combine JPGs vertically (top to bottom) or horizontally (side by side) with a single click.
  2. JPG Output Format: Download merged images as high-quality JPG files — ideal for photos, documents, and web publishing.
  3. 100% Client-Side: All merging runs locally in your browser. Your images are never uploaded to any external server.
  4. Auto Image Adjustment: Images are automatically scaled to fit within maximum dimensions, ensuring the merged output is not oversized.
  5. Instant Preview: See the merged result in real-time as soon as both images are uploaded. No waiting for server processing.

How to Merge JPG Files Online

Three simple steps to combine your JPG images into one file.

  1. 1. Upload Your JPG Images: Drag and drop your first JPG into the top upload area, and your second JPG into the bottom upload area.
  2. 2. Choose Merge Direction: Select vertical to stack images top-to-bottom, or horizontal to place them side-by-side. The preview updates instantly.
  3. 3. Download the Merged JPG: Click the Download JPG button to save your combined image. The result is a single, high-quality JPG file.

Tips for Merging JPG Images

Best practices for getting the best merged results.

  1. Use Similar Image Sizes: For the cleanest merged result, use images with similar dimensions. If they differ, the smaller image is centered against the larger one.
  2. Match Orientation to Content: Use vertical merge for portrait photos or stacks; use horizontal merge for landscape photos, side-by-side comparisons, or banners.
  3. Optimize Before Merging: If your source images are very large, consider resizing them first. This keeps the merged output at a manageable file size.
  4. Preview Before Downloading: Always check the live preview before downloading to make sure the merge direction and alignment look correct.
  5. Use for Web-Optimized Output: The JPG output format provides good compression for photos, making merged files ideal for websites, emails, and social media.
  6. Combine with Other Tools: After merging, use other image tools to crop, resize, or add text to your combined image for the perfect final result.

Perfect for These Use Cases

Common scenarios where merging JPG files is useful.

  1. Combine Before & After Photos: Merge before and after images side by side for comparisons, transformations, or renovation showcases.
  2. Create Photo Collages: Stitch multiple photos together into a single image for social media posts, galleries, or presentations.
  3. Document Scanning: Combine multiple scanned document pages into one image — perfect for forms, receipts, or multi-page files.
  4. Product Listings: Merge multiple product photos into a single listing image for e-commerce platforms and marketplaces.
  5. Social Media Banners: Combine multiple images horizontally to create banner-style images for Facebook, Twitter, or LinkedIn profiles.
  6. Design Mockups: Quickly merge UI screenshots, design variations, or layout options for client presentations and feedback.

Why Use This JPG Merger

Advantages of merging JPG files with this online tool.

  1. No Software Required: Completely browser-based — no Photoshop, no GIMP, no app downloads. Just open and merge.
  2. Privacy Protected: Client-side processing means your photos and images never leave your computer. Total privacy guaranteed.
  3. Works Everywhere: Compatible with Windows, Mac, Linux, iPhone, Android, and iPad. Any device with a modern browser.
  4. Completely Free: No limits, no watermarks, no premium versions. Merge unlimited JPG files at zero cost.
  5. Fast & Efficient: Instant preview and download. No waiting for uploads or server-side processing queues.
  6. High Quality Output: Merged JPG files maintain excellent image quality with high-quality canvas-to-JPG conversion.

Technical Details

How the JPG merger works under the hood.

  1. Canvas-Based Merging: Uses HTML5 Canvas API to composite two images onto a single canvas with precise positioning and alignment.
  2. Client-Side Processing: All image reading, merging, and JPG encoding happens locally in your browser. Zero server communication.
  3. Supported Input Formats: JPG, JPEG, PNG, WebP, GIF. Files up to 15 MB each. Images are automatically downsampled if they exceed the maximum dimensions.
  4. Output Format: Merged output as a single JPG file with 92% quality encoding for an optimal balance of quality and file size.
  5. Maximum Dimensions: Each input image is limited to 8192 pixels on its longest edge. Merged output is constrained to 8192 pixels maximum.
  6. Alignment: When images differ in size, the smaller image is centered along the perpendicular axis for a balanced composition.

Frequently Asked Questions

Have questions? We have answers.

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