LinkedIn Ad — Message Ad Resizer300 × 250 px
Resize any image to exactly 300×250px for LinkedIn Ads. Free, instant, and nothing leaves your browser.
- Dimensions
- 300 × 250 px
- Aspect ratio
- 6:5
- Max file size
- No fixed limit
- Best format
- JPG
How to resize an image for LinkedIn Ads
Add your image
Click Choose image or drop a file into the box above. JPG, PNG and WebP all work.
Check the crop
The preset is already set to 300×250px. Drag inside the preview if you want to reposition the crop.
Download
Pick a format and click Download. You get a LinkedIn Ad — Message Ad at exactly 300×250px.
LinkedIn Ad — Message Ad size at a glance
LinkedIn message ad banners at 300×250 accompany sponsored InMail messages. The small format supports the text message rather than replacing it.
Why 300×250 matters
Message ads have high open rates on LinkedIn. The banner image supports the message text, adding visual credibility and brand recognition.
What happens when the size is wrong
Missing or low-quality banners make the InMail feel less legitimate. Cluttered designs compete with the message text rather than supporting it.
Best practices
- Keep it simple — brand logo and one visual concept.
- The banner supports the message text, not the other way around.
- Use the same visual language as your other LinkedIn ad creative.
Frequently asked questions
What size should a LinkedIn Ad — Message Ad be?
The recommended size for a LinkedIn Ad — Message Ad is 300×250 pixels (6:5 aspect ratio).
How do I resize an image for LinkedIn Ad — Message Ad?
Upload your image to the resizer above. It will automatically crop and resize to 300×250px. Adjust the crop position if needed, then download the result. Your image never leaves your device.
Which format should I use for a LinkedIn Ad — Message Ad?
LinkedIn Ads accepts JPG, PNG. We recommend JPG — Small banner appearing in LinkedIn message ads (InMail). Limited space demands concise, impactful creative.
Is my image uploaded anywhere?
No. TinyResize runs entirely in your browser. The file is read from your device, resized on your device, and downloaded from your device. Nothing is sent to a server.