Merge Images: Combine Photos Side by Side

Combine 2 to 12 photos into one image, side by side, stacked, or 2x2. Free and private.

Merge Pictures Into One Image

Merge Pictures Into One Image

Side by Side, Stacked, or 2x2

Put two photos side by side for a before and after or a pair, stack them top to bottom for a tall story-style image, or drop four photos into a 2x2 grid. Every photo gets an equal tile, and you can reorder them before you download.

Merge Photos on iPhone, Android, or Desktop

It runs in any modern browser, so you can combine photos on a phone without installing an app, or merge screenshots and product shots on a laptop. Pick files from your camera roll, Files app, or a folder.

Private Browser Processing

The browser decodes and draws the images on this device. The files are not sent to an image-processing server, and the temporary working data disappears when the page closes.

Choose the Right Output

Choose the Right Output

PNG for Graphics

Use PNG for screenshots, text, logos, or images that need crisp edges. PNG is lossless but usually creates a larger file.

JPG for Photos

Use JPG for a smaller photo file that is easy to email or post. Transparent areas are filled with the background colour because JPG does not support transparency.

Practical Limits

Merge 2 to 12 files, with a 20 MB and 32 megapixel limit per source image. Those bounds keep the canvas responsive and avoid browser memory crashes.

Need a Styled Layout Instead?

Need a Styled Layout Instead?

Plain Merge or Decorative Collage

This tool joins photos into one clean, even image with no frames or templates. For decorative layouts, uneven frames, and social templates, open Collage Maker. For a labeled comparison with Before and After captions, use the Before and After Photo Maker.

How do I merge two images into one?

  1. 1

    Step 1: Add Your Photos

    Tap the upload button and choose two or more JPG, PNG, WebP, or AVIF files from your device.

  2. 2

    Step 2: Pick a Layout

    Choose Side by side, Stacked, or 2x2 grid. Reorder the photos with the arrows, and adjust spacing, fit, and background colour if you like.

  3. 3

    Step 3: Download the Merged Image

    Choose PNG or JPG and save one combined picture.

Reviews

Loved by Instasize Creators

4.7| 327K App Store ratings

US App Store · checked

One of my go-to apps

Great app for filtering photos and even greater app for sizing pictures for not only posts but story photos as well... love this app I mainly use insta size for all my posts now ;)

B
@beachxbunny

Fast and Straightforward

Resizing photos for social media should be a cinch, but most editing programs are a pain to use. Of the dozen I’ve used, Instasize is the fastest, easiest and most consistent...

S
@Soho Brad

Great Sizes

Perfect app for the exact social media picture sizes. Love it. I use it daily. & I like the premade options they give you for different social medias!

B
@Baby24doll

I love instasize

Its the best app. for sizing photos to fit for Instagram or other forms of social media. You can also edit photos and create collages with multiple photos. It’s had been my friend for several years!

J
@Jay town

Always helpful

Always helpful when needing to resize photos

L
@Leobaby96

Huge fan

I love this app. Makes posting all types of photos. Love how it makes them fit on different formats

N
@Nicola Bella

I’ve been using for years. Can’t work without it.

I use this app everyday to perfectly resize images for all of my social media platforms

T
@The Flywire

LOVE

This app saved the day for me! I’m finally able to resize my photos for IG....effortlessly

T
@Tamrinaann

Great App

We use this App weekly to resize pics for social media posts. Very user friendly, easy to use program when you want to get in and out quickly...

C
@cle957

FAQ

Merge Images FAQ

Can't find what you're looking for? Contact support

How can I combine two images into one image?

Add both images, choose Side by side to place them next to each other or Stacked to put one above the other, then download the merged file as PNG or JPG. It all happens in your browser, with no account.

How do I put two photos side by side?

Add both photos and keep the Side by side layout selected. Use the arrows to choose which photo is on the left, then download the result.

How do I merge pictures into one photo on my phone?

Open this page in your phone browser, choose the photos from your camera roll or gallery, pick a layout, and download. You do not need an app, and the photos are not uploaded.

How can I merge multiple JPG files for free?

Add up to 12 JPG files, pick Side by side, Stacked, or a grid, and download one image. The tool is free with no watermark. If you want a multi-page document instead, use JPG to PDF.

Can I merge images of different sizes?

Yes. Show full image keeps each whole photo inside its tile, and Fill and crop trims the edges so every tile is filled.

Do my images get uploaded?

No. Image decoding, layout, and export happen locally in the browser on your device.

Can AI merge two images?

This tool does not use AI. It places your photos exactly as they are in one layout. If you want to blend two photos into a new picture, use an AI image editor instead.

Instasize pricing: free editing and paid AI plans

Resize, crop, add text and work with layers for free. Paid plans include an AI usage allowance, background removal and access to image and video models. First-time subscribers can start with a free trial.

Free

Essential tools for casual creators.

$0

Free forever

  • Resize, crop, text and layers
  • Batch resize & convert, 200 photos at a time
  • HD export
  • No AI features: AI edits are part of Pro

Pro

Popular

Essential AI tools for creators

Billed monthly

  • More AI usage
  • Batch background removal, 200 photos at a time
  • 2 generations at a time
  • AI Chat Editing
  • All AI image models
  • All AI video models

Ultimate

Advanced features for professionals

$59/mo

Billed monthly

Annual option: $499 billed yearly.

Free trial for first-time members, then $59/month. Cancel anytime.

  • More AI usage
  • Batch background removal, 200 photos at a time
  • 4 generations at a time
  • AI Chat Editing
  • All AI image models
  • All AI video models

Max

Maximum power and speed

$259/mo

Billed monthly

Annual option: $2199 billed yearly.

Free trial for first-time members, then $259/month. Cancel anytime.

  • More AI usage
  • Batch background removal, 200 photos at a time
  • 8 generations at a time
  • AI Chat Editing
  • All AI image models
  • All AI video models

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