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Supported Image Formats

Image Gallery Updated on October 20, 2020

Benchmark Email currently supports the following image formats:

  • .jpeg (specifically RGB JPEG)
  • .png
  • .gif
Image file format with high-quality data with lossless compression. Great for photography or images with lots of colors. Image file format with lossless compression and with the ability to display transparent backgrounds. Great for logos.   Image file format with a maximum of 256 colors. This format support animation and transparent backgrounds. Note: To be shown correctly GIFs size should be up to 200 kb.



  • There is a file upload maximum of 5 MB.
  • Images larger than 500 KB will be compressed. If the image is 500kb or smaller it will keep the image original width.
  • For the best deliverability results, Benchmark recommends using image files that are smaller than 200 KB.
  • The maximum width for images is 640px, but if an image is smaller than 640px width it will keep its original width.
  • We do not support CMYK-formatted jpegs.
By uploading an image to your account, you agree you have the right to use and reproduce the image and that it does not include prohibited content.



  • If you decide to use an image URL rather than uploading it to your gallery, please note that if the image is deleted from it’s hosting service, it will be removed from any email campaign where you previously added it.
  • For the best email performance, we recommend using GIFs no larger than 200kb. You can upload a max size of 500kb, but the quality may vary and anything larger than 500kb will be compressed. Your GIF’s image quality might be reduced or it may only show the first frame of your animation. Check out our blog on How to Use GIFs with Email Marketing.
  • Microsoft Outlook 2007, 2010, and 2013 do not support animated GIFs. Instead, they display only the first frame of your GIF.
  • Our image editor is not designed to edit GIF files. If you need to edit your GIF’s we recommend doing it in the GIF creator you used.

If you have any issues with uploading images to the gallery or into the email, please contact our support team via telephone, chat, or email.

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