Image file requirements

Many signature designs include images, logos and banners. The following requirements should be considered when adding images to your signatures.

File types

We recommend the use of PNG, JPG and JPEG images. GIF images are not supported in the Signature Editor.

Image size

The maximum file size allowed for uploaded images is 150kb (there are not restrictions in respect of image dimensions).

Image processing

When an image is uploaded, it is:

  • Automatically converted to 24bit PNG format.
  • Resized to maintain the signature's aspect ratio.

Image screen resolution

We recommend that any email signature images you use are 96 dots per inch (dpi).

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