Choosing Images for Email: A Practical Guide

The wrong image can make an otherwise simple email slow, blurry or difficult to understand. Choosing images for email involves more than finding an attractive photograph: the file, its displayed size and its role in the message all matter.

Start with the job the image needs to do. A product photograph, a transparent logo and a short animation have different requirements. Keeping that distinction clear makes compression and compatibility decisions easier.

Choose a format for the visual job

JPEG is a practical starting point for photographs where adjustable lossy compression is acceptable. Inspect faces, gradients and small details after compression; an attractive file size can hide obvious visual damage.

PNG is useful for graphics needing crisp edges or transparency. The PNG specification defines lossless storage and alpha transparency. Those format properties do not establish how every email application will display your particular file.

Use GIF when motion contributes something specific, such as a brief product demonstration. A static image is usually easier to review and budget. Do not assume a modern web image format will work throughout your recipient base because it works in your browser; verify the actual output and clients you support.

Decide dimensions before compressing

Choose the displayed width first. For a photograph occupying a 600-pixel content area, compare an image near that width with a denser version, such as 1200 pixels wide, displayed at the same size. The larger source may improve sharpness on some screens, but it also needs a byte-size check.

Crop before compressing so you do not spend bytes on detail outside the composition. Keep the subject understandable at the narrowest intended display size. A screenshot with tiny labels might need a focused crop rather than a higher-resolution export of the entire application.

There is no useful universal image-byte limit for every email. Set a budget for the whole message based on your audience and the number of images. Record file size, dimensions and the visible quality of each candidate, then choose deliberately.

Write the message so images can be absent

Keep essential prices, dates and actions in HTML text. An image should enrich the message without becoming the only place where the offer is explained. Gmail lets recipients control external image display, and suspicious messages may not display images automatically; see Google’s image settings guidance.

Write alternative text according to the image’s function. A product photo may need a useful description. A linked illustration may need an action-oriented label. A purely decorative flourish can use empty alternative text. The W3C image tutorial explains these distinctions.

For a workshop invitation, use the headline and date as text, a supporting photograph with an appropriate description, and a separate registration link. Block the images in a test and verify that the invitation still makes sense.

Make animation safe to stop

An animated GIF should have a useful first frame. The recipient may see a static image or have animation disabled. Microsoft documents animation settings in supported Outlook releases; avoid blanket claims that every Outlook version either plays or rejects GIFs.

For a product walkthrough, make the first frame show the result or provide enough context to understand the linked destination. Keep detailed instructions in nearby text. Shorten the sequence and remove unnecessary frames when reducing size, while preserving the intended explanation.

Motion should never be the only way to discover a deadline, instruction or important change. Send the still experience through review as well as the animated one.

Review the exported and delivered result

Before approving an image, check the final hosted URL, crop, dimensions, size and alternative text. Confirm that remote assets are reachable without a dashboard login and that the link opens the expected destination.

Send through your real delivery system. Inspect narrow and wide views, blocked images and animation settings where available. An editor thumbnail proves neither received-mail quality nor playback behavior.

Weavour brings image selection and email composition into the host application’s workflow, while the customer handles sending. Explore Weavour and start your next template review with the image’s purpose, then verify the file that recipients actually receive.