Short answer:
Outlook on Windows compresses images to 220 PPI after sending. If your image does not match this setting, it may look sharp while composing but appear blurry or pixelated to recipients.
Summary:
If images in your email signature look blurry after you send, it's because Outlook on Windows automatically compresses images. This guide explains why it happens and how to fix it.
Why do images become blurry?
An image in your email signature may look correct while composing, but appear unsharp after sending.
This happens because Outlook for Windows automatically compresses images when the email is sent. Xink does not modify or reduce image quality.
The most common cause is that the image is not optimized for Outlook’s default 220 PPI compression.
Recommended fix: Disable image compression
The most effective solution is to disable image compression in Outlook or Office:
- Enable Do not compress images in file
Alternative fix: Optimize images for Outlook
If disabling compression is not possible, you can prepare your images to match Outlook’s behavior.
- Export images at 220 PPI
This helps Outlook process the image more predictably after sending.
Using Photoshop
If you use Photoshop, apply the following settings when resizing:
- Resample: Preserve Details
- Reduce Noise: 100%
Try a different image format
If the issue persists, switching image format can help:
- Use PNG for logos and graphics
- Use JPG for photos
Some formats handle compression better depending on the image type.
Summary
- Outlook for Windows compresses images automatically
- This may cause images to appear blurry after sending
- Disable compression or optimize images to 220 PPI
- Xink does not alter image quality
Still need help?
If your images still appear blurry, review your original file size and format—or test with a different image to compare results.
