Best size for email signature image

The ideal size for an email signature image depends on several factors, including the email client, screen resolution, and personal preference. Here are some general guidelines:

Width:

• For most email clients, a width of 600-700 pixels is a good starting point. This ensures that your image is visible and not cut off on most screens.
• If you're using a more modern email client like Gmail or Outlook, you can go up to 800-900 pixels wide.

Height:

• The height of your image should be proportional to the width. A good rule of thumb is to keep the height between 100-200 pixels.
• If you're using a logo or icon, you can make it taller (up to 300 pixels) if it's a simple design.

File size:

• Keep your image file size as small as possible while still maintaining a good level of quality. Aim for a file size of 50-100 KB.
• If your image is too large, it may not load properly in some email clients or may cause issues with email delivery.

Format:

• Use a format that's widely supported, such as JPEG, PNG, or GIF.
• Avoid using formats like BMP or TIFF, as they can be large and may not display properly in all email clients.

Best practices:

• Use a transparent background (PNG or GIF) to ensure your image blends with the email background.
• Avoid using too much text or complex designs, as they may not display properly in all email clients.
• Make sure your image is optimized for web use, with a high enough resolution to look good on various screens.

Here's an example of a well-sized email signature image:

• Width: 650 pixels
• Height: 150 pixels
• File size: 70 KB
• Format: PNG
• Transparent background

Remember to test your email signature image in different email clients and on various devices to ensure it looks good and displays properly.