How to Merge Images Online — Free Step-by-Step Guide

Combine multiple images into a single picture or PDF in under a minute. No sign-up, no uploads, no watermark.

Upload Your Images

Click the upload area or drag and drop your JPG, PNG, or WebP images into the tool. You can upload as many images as you need — each up to 50 MB.

Arrange the Order

Use the arrow buttons on each thumbnail to reorder your images. The Reverse button flips the entire sequence instantly. Your images will merge in the order shown.

Choose a Layout

Select Vertical to stack images top-to-bottom, Horizontal for a side-by-side panorama, or Grid to arrange them in neat rows and columns. For grid layouts you can set the number of columns.

Customize the Appearance

Adjust the spacing between images with the slider, add rounded corners for a polished look, and pick a background color to fill empty areas.

Select Output Format

Choose Single Image (PNG, JPG, or WebP) or PDF Document. For PDFs you can pick a single scrollable page or one image per page.

Merge & Download

Click the Merge button. Preview the result with zoom controls, then click Download to save your merged image or PDF to your device.

Why Choose Our Image Merger?

100% Private & Secure

Your images never leave your device. All processing runs locally using the HTML5 Canvas API. Nothing is uploaded to any server.

No Limits or Watermarks

Merge as many images as you like. No file count limits, no size restrictions beyond 50 MB per file, and absolutely no watermarks on your output.

Multiple Layout Options

Stack images vertically, line them up horizontally, or arrange them in a customizable grid. Each layout supports spacing, rounded corners, and background colors.

Export as Image or PDF

Download your merged result as PNG, JPG, or WebP image, or export as a PDF with single-page or multi-page options. Quality controls let you balance file size and output quality.

Works on Any Device

Fully responsive — use it on desktop, tablet, or mobile. Drag-and-drop works on touch devices, and all controls adapt to your screen size.

Completely Free, Forever

No subscriptions, no hidden charges. All tools on AeroTools are and will remain free to use. No account creation needed.

Image Formats Supported

Supported input and output formats for the AeroTools Image Merger
Format	Input	Output	Best For
PNG	✅	✅	Lossless quality, screenshots, transparent backgrounds
JPG / JPEG	✅	✅	Photos, web images, small file sizes
WebP	✅	✅	Modern web, best compression with quality
PDF	—	✅	Documents, printing, sharing formatted layouts

Frequently Asked Questions

Everything you need to know about using AeroPDF — from privacy and performance to supported devices.

How do I merge multiple images?

Upload your images, choose your layout option (horizontal, vertical, or grid), arrange the file order, customize margins or borders, and download the combined image.

Are my photos uploaded to compile?

No. AeroTools combines images locally using HTML5 canvas. Your files never touch external servers.

Who this tool is for

Image Merger is useful for students, teams, freelancers, and anyone preparing documents for sharing, submission, review, or storage. Start with the file you already have, then download the result when it is ready.

How it works

1Choose the file or content requested by the tool.
2Review any available options before running the task.
3Process the document and check the result before download.

Best results

Use the original file where possible, keep a backup of important documents, and confirm that text, layout, images, and page order meet your needs before you share the output.

Privacy and control

AeroPDF is designed for practical browser workflows. Read our Privacy Policy for current handling details, and use a local copy when working with sensitive information.

Image Merger