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A general rule is to make your signature logo no larger than 150-200 pixels wide, 70?100 pixels high for a horizontal logo, and the opposite for a vertical one. For a square block, we recommend 150-200 by 150-200 pixels.

The best image size to include in your email signature is approx. 300-400 pixels wide and 70-100 pixels high, plus 70 dpi. If you use a banner in your email, this should have a maximum width of 650 pixels and a maximum height of 100 pixels.

How to Make an Email Signature Emphasize your name, affiliation, and secondary contact information. Keep the colors simple and consistent. Use design hierarchy. Make links trackable. Use space dividers. Include an international prefix in your contact number. Make your design mobile-friendly.

The ideal Gmail signature image size would be a little smaller: about 80 pixels in height and up to 200 pixels wide. This is because Gmail's layout and design are optimized for a more compact signature.

PRO TIP: Email signature size in Canva can vary depending on the email client you're using and your screen resolution. For the best results, we recommend using a size that's between 200×200 and 600×200 pixels.

What's the Best Size for Email Signatures? There's no set rule on how big or small an email signature should be. That said, 300 x 600 pixels is widely considered to be a good size.

The ideal size for email signatures (both text and image) is no more than 650 pixels wide and between 90 and 150 pixels high. This allows for images (headshot, logo, promotional banner) and contact information to be kept streamlined without dominating the email.