How do I combine images vertically (top to bottom)?

Upload your images, select the Vertical direction option, set your separator and alignment preferences, then click Merge Images. All images are stacked top to bottom in the order shown.

Can I merge 3 images at once?

Yes. You can add up to 3 images and merge them all at once. Use the up and down arrow buttons to set the order before merging.

What is the difference between Gap and Line separator?

Gap adds empty space between images — you choose the width (2–100px) and background color. Line draws a solid colored border between images — you choose the thickness (1–20px) and color. None merges the images seamlessly with no space between them.

What image formats can I merge?

You can merge JPG, PNG, WEBP, GIF, and BMP images as input. The merged result can be downloaded as PNG (best for transparency), JPG (smaller file for photos), or WEBP (smallest size with great quality).

How do I merge images on iPhone or Android?

Open the Image Merger in Safari (iPhone) or Chrome (Android), tap to upload your photos from your camera roll, set your options, and tap Merge Images. The merged image saves directly to your device.

Can I change the order of images before merging?

Yes. After uploading, use the up (↑) and down (↓) arrow buttons on each image card to reorder them before clicking Merge Images.

What does the alignment option do?

For horizontal merging, alignment controls how images are positioned vertically — Top (aligned to top edge), Center (vertically centered), or Bottom (aligned to bottom edge). For vertical merging, it controls horizontal positioning — Left, Center, or Right.

What output formats are available for the merged image?

You can download the merged image as PNG (lossless, supports transparency), JPG (smaller file size, ideal for photos), or WEBP (best compression with excellent quality).

Free Online Tool

Image Merger

Q: How do I merge two images side by side online for free?

Upload both images, select Horizontal direction, choose your separator preference (none, gap, or line), then click Merge Images. The combined image downloads instantly — no account needed.

Q: Are my images uploaded to a server when I merge them?

No. All merging is done locally in your browser using the HTML5 Canvas API. Your images never leave your device — there are no uploads and no privacy concerns.

Combine up to 3 images side by side or top to bottom. Add a gap, line, or merge seamlessly — instantly in your browser. No uploads, 100% private.

No uploads Up to 3 images PNG / JPG / WEBP 100% free

Add Images (up to 3)

Drop images here or browse Release to add images

JPG, PNG, WEBP, GIF, BMP — max 50 MB each

Merged Image

Merge Direction

Separator

None (seamless) Gap / Space Line / Border

Gap size

Gap color

Line thickness

Line color

Alignment

Output Format

PNG preserves transparency. JPG is smaller for photos.

How It Works

How to Merge Images Online — 4 Simple Steps

No software to install. No account needed. Combine your photos directly in your browser in seconds.

Step 1

Upload Your Images

Drag and drop up to 3 photos onto the upload area or click Browse. Supports JPG, PNG, WEBP, GIF, and BMP — up to 50 MB each. Use the arrow buttons to reorder images before merging.

Step 2

Choose Merge Direction

Select Horizontal to combine images side by side in a single row, or Vertical to stack them top to bottom. All images are automatically scaled to the same height (horizontal) or width (vertical).

Step 3

Set Separator & Style

Choose None for a seamless merge, Gap to add colored space between images (2–100px), or Line to draw a colored border (1–20px). Set alignment (top/center/bottom) and output format (PNG, JPG, WEBP).

Step 4

Download Merged Image

Click Merge Images and preview the combined result instantly. Click Download to save the merged image to your device as PNG, JPG, or WEBP — no email or account required.

Features

Everything You Need to Merge Images Online

A powerful yet simple free image merger that works entirely in your browser — no downloads, no watermarks, no limits.

Horizontal & Vertical Merging

Combine images side by side in a single row, or stack them vertically top to bottom. All images are automatically scaled to a uniform height or width so they align perfectly.

3 Separator Options

Choose seamless (no gap), gap (colored space 2–100px wide), or line (solid border 1–20px thick) between merged images. Customize gap and line colors with a full color picker.

Image Alignment Control

Control how images align when they have different sizes. Choose Top, Center, or Bottom alignment for horizontal merges, and Left, Center, or Right for vertical merges.

PNG, JPG & WEBP Output

Download your merged image in any format. PNG for lossless quality and transparency support. JPG for smaller file sizes ideal for photos. WEBP for the best compression with excellent visual quality.

No Upload Required — 100% Private

Your images never leave your device. All processing happens locally in your browser using the HTML5 Canvas API. No server uploads, no data collection, no privacy risks.

Merge Up to 3 Images Free

Add up to 3 images in any order. Drag the thumbnail rows up or down to reorder them before merging. Remove individual images and add new ones without starting over.

Use Cases

When to Use an Online Image Merger

From social media content to professional comparisons — here are the most common reasons people merge images online.

Before & After Comparisons

Place the original and edited versions of a photo side by side to create a compelling before-and-after comparison. Popular for fitness transformations, photo editing showcases, product improvements, and home renovation reveals.

Social Media Collages

Combine 2 or 3 related photos into a single image for Instagram, Facebook, Twitter/X, or LinkedIn posts. A merged image tells a more complete story than a single photo and tends to get higher engagement.

Product Comparison Images

Merge images of different product variants, colors, or sizes side by side so customers can compare them at a glance — without clicking through multiple pages.

Screenshot Compilation

Join multiple app screenshots, error messages, or website captures into one image for bug reports, tutorials, documentation, or support tickets.

Travel & Event Collages

Combine highlight photos from a trip, wedding, birthday, or event into a single horizontal or vertical collage to share with friends and family on social media or messaging apps.

Step-by-Step Tutorials

Create tutorial visuals by merging step-by-step screenshots top to bottom. Add a numbered caption to each step for clear, scannable instructions in blog posts and presentations.

FAQ

Frequently Asked Questions

Everything you need to know about merging images online for free.

Upload both images using the upload area above, select Horizontal as the merge direction, choose your separator preference (none, gap, or line), then click Merge Images. The combined image downloads instantly to your device — no account needed.

Upload your images, select the Vertical direction, set your separator and alignment, then click Merge Images. All images will be stacked top to bottom in the order shown in the list.

Yes — you can upload and merge up to 3 images in a single operation. Use the up (↑) and down (↓) arrow buttons to set the order before merging.

Gap adds empty colored space between images — you choose the width (2–100px) and background color. Line draws a solid border line between images — you choose the thickness (1–20px) and color. None merges the images seamlessly with no space.

No. The tool uses the original pixel data of each image and redraws them onto a new HTML5 Canvas at full resolution. There is no re-compression for PNG output. For JPG, a 92% quality setting is used which preserves excellent visual quality.

No. All image processing happens locally in your browser using the HTML5 Canvas API. Your images never leave your device — there are no server uploads, no cloud processing, and no privacy concerns.

You can merge JPG, PNG, WEBP, GIF, and BMP images as input in any combination. The merged result can be saved as PNG (lossless, supports transparency), JPG (smaller file size for photos), or WEBP (best compression ratio).

Open the Image Merger in Safari (iPhone/iPad) or Chrome (Android), tap the upload area to select photos from your camera roll or files app, configure your options, and tap Merge Images. The result downloads directly to your device.

Yes. By merging 2 or 3 images horizontally or vertically with custom separators, you can create simple photo collages, comparison images, or multi-image layouts without any design software.

No. The merged image is completely clean with no watermark, logo, or branding added. The output is entirely yours to use freely.

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