1. Click the "Choose Files" button to select multiple image files on your computer or click the "URL" button to choose an online file from URL, Google Drive or Dropbox. The image format can be JPG, PNG, TIFF, GIF, BMP, PS, PSD, WEBP, TGA, DDS, EXR, J2K, PNM, SVG, XWD, etc.

2. Choose the "Vertical" option to append image to the bottom, choose the "Horizontal" option to append image to the right, or choose the "Overlap" option to overlap one image over another.

3. Click the "Submit" button to start processing. The new image file will be appended to the latest image file created. For example: If you submit image files A, B and C one by one, the latest output image file will be file A+B+C combined together.

Image files are composed of digital data in one of image file format that can be rasterized for use on a computer display or printer. An image file format may store data in uncompressed, compressed, or vector formats. A raster graphics image is a dot matrix data structure, representing a generally rectangular grid of pixels, or points of color. As opposed to the raster image formats, vector image formats contain a geometric description which can be rendered smoothly at any desired display size.

You can use this online image merger program to merge JPG images, merge PNG images, merge GIF images, merge SVG images, merge WEBP images, etc.