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Image Merger Online

Merge multiple JPG, PNG and WEBP images into one image online. Combine images horizontally, vertically or in a grid with custom spacing, alignment and background options.

Image Merger Workspace

Select or drag and drop your photos here to merge into a single image.

Local browser processing • Zero server uploads

Merge Images Online

OneResizer's Image Merger is a fast, powerful, and private client-side tool designed to combine multiple photos, screenshots, documents, or graphics into a single unified image. Whether you want to place photos side-by-side (horizontal), create a top-to-bottom sequence (vertical), stitch pictures in a 2-column grid, or design an auto-balanced photo collage, Image Merger gives you complete control over spacing, gaps, margins, alignment, aspect ratio fitting, borders, corner rounding, and canvas background colors.

How to Merge Images

  1. Upload your images: Click "Choose Images" or drag & drop 2 to 20 JPG, PNG, or WEBP files.
  2. Arrange their order: Drag and drop the thumbnail cards or use arrow buttons to reorder your photos.
  3. Select a layout: Choose Horizontal, Vertical, 2-Column Grid, or Auto Collage.
  4. Adjust spacing and background: Fine-tune gaps, margins, alignment, corner radius, and choose a white, dark, transparent, or custom background.
  5. Preview the result: Check the real-time high-resolution live preview and inspect dimensions and estimated file size.
  6. Download the merged image: Click "Download Merged Image" to export your high-quality composition instantly in PNG, JPG, or WEBP.

Image Merger Features

🖼️ Multiple Image Upload
Combine from 2 up to 20 images simultaneously in JPG, PNG, or WEBP.
🔄 Drag and Reorder
Seamlessly change image sequence with touch and mouse drag-and-drop.
↔️ Horizontal & ↕️ Vertical
Stitch pictures side-by-side or stack them vertically for timelines and stories.
⊞ Grid & 🧩 Auto Collage
Smart dynamic grids that automatically balance rows and columns for collage art.
📐 Custom Spacing & Margins
Control cell gaps, canvas padding, image corner radius, and borders with precision.
🎨 Custom Background & Canvas
Pick transparent, clean white, dark black, custom HEX colors, or custom pixel dimensions.
🔒 100% Client-Side Privacy
All rendering is computed directly in your browser without uploading files to any server.
✨ True High-Res Master Export
Exports crystal clear master composites with zero blur or unwanted downscaling.

Frequently Asked Questions

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