Image Combiner

Combine images without uploading them

Join JPG, PNG, and HEIC images into one file on your device. Place them side by side in a horizontal row or stack them from top to bottom. The images stay on your device.

Give every image a common side

A horizontal row uses one common height, while a vertical stack uses one common width. Each image keeps its original proportions, so the tool scales it without cropping or stretching it.

Control image order

The selected images appear as previews. Drag them to change their order. On the website, you can also click a preview to move it forward or use the arrow keys; the mobile app has accessible move controls. For a horizontal result, the first image appears on the left. For a vertical result, it appears at the top.

Export as PNG or JPG

PNG preserves transparent pixels and uses lossless encoding. JPG is often smaller for photographs; choose its quality and the matte color that replaces transparent pixels.

Output limits

Select between 2 and 10 images. Each input can be up to 25 MB, with a 100 MB total limit. The generated image is limited to 16 megapixels and 8192 pixels on either side.

Frequently asked questions

How are images resized before they are combined?

For a horizontal layout, every image is scaled proportionally to the common height. For a vertical layout, every image is scaled proportionally to the common width. Images are never cropped or stretched.

In what order are the images joined?

Images are joined in preview order. Drag the previews to rearrange them. For a horizontal result, the first image appears on the left; for a vertical result, it appears at the top.

Should I choose PNG or JPG output?

Choose PNG when you need transparency or lossless output. Choose JPG for photographs when a smaller file is more useful. JPG output replaces transparency with the selected matte color.

How many images can I combine?

You can combine between 2 and 10 JPG, PNG, or HEIC images. Each file can be up to 25 MB, with a combined input limit of 100 MB.

Why do I need to choose a smaller common side?

The complete combined image must stay within 8192 pixels on either side and 16 megapixels total. A smaller common height or width reduces the complete output dimensions.

Are my images uploaded?

No. Image decoding, scaling and encoding happen on your device. Image contents are not sent to Isobj or a third-party image service.

Does the combined image keep photo metadata?

No. The combined file does not copy EXIF, location or other source metadata. Keep the original files if that information matters.