Do you want images in your email to appear sharp and professional? With the tips below, you can prevent blurry or unclear visuals.
1. Use the right size
Make sure an image is at least as large as the space in which you place it. An image that is too small will often become blurry when enlarged.
For the Mail Module, we usually recommend a size of 600 × 300 pixels.
Are you using high-resolution screens, such as retina displays? Then it’s better to use 1200 × 600 pixels for a sharper result.
Tip: It’s better to use an image that is slightly too large than one that is too small
2. Consider high-resolution screens
Many phones have high-resolution displays. As a result, an image may look blurry if it isn’t saved at a large enough size.
A good rule of thumb is: save your image at 2× the size at which it is displayed.
Example:
Display in your email: 300 × 300 pixels
Saved file: 600 × 600 pixels
This ensures the image looks sharp even on high-resolution screens.
3. Export images at a higher scale
Do you work with Adobe Illustrator? Export your image at a higher scale. Go to: File → Export → Export for Screens.
Under Scale, you can choose options such as:
2×
4×
This makes it easy to create a sharper version of your image for use in emails.
4. Choose the right file format
For images in emails, use PNG or JPEG/JPG.
Use PNG for:
logos
icons
images with text
PNG usually stays sharper in these cases.
Use JPEG/JPG for:
photos of people
atmospheric images
backgrounds
JPEG is often better suited for photos and typically keeps the file size smaller.
5. Avoid text in images
Text inside an image can become blurry, especially on smaller screens. Small letters may be difficult to read.
Instead, place important text as regular text in your email, for example using a text widget.
This has several advantages:
text remains readable on any device
your image stays cleaner and sharper
screen readers can read regular text
Please note: Text within images is less accessible for people with visual impairments.
6. Be careful with compression
Over-compressed images can appear grainy or blurry. Do you want to reduce file size without visible quality loss? Use a tool like TinyPNG.
Tip: Always check whether the image is still sharp enough after compression.
7. Always test your email beforehand
Before sending, always send a test email to yourself. Then view your email on different devices, such as:
a phone
a laptop or desktop
This allows you to immediately check whether your images are displayed sharply everywhere.
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