When you set up an experiment, Heatseeker’s AI selects an image from our library of images that have proven their effectiveness. View a selection of the library here.
Don’t love that image? Or doesn’t it match your brand or experiment goals? No problem, you can upload your own image. Follow our recommendations on image dimensions and text specifications for seamless uploads.
How to Pick an Effective Image
Pick an engaging image, ideally with people
Fit the experiment goal, target audience, and business/consumer purpose
We almost always recommend to use the same image for all your ad variants, to reduce the variables.
Finding an Image
Choose an image for your experiment. For example by browsing Unsplash.
Image Specifications LinkedIn
File type & size
File Types: jpg, png, gif
File Size: Up to 5 MB
Recommended Ratios
Horizontal for desktop & mobile
1.91:1 ratio: recommended size 1200x628 (Max 7680x4320)
Square for desktop & mobile
1:1 ratio: recommended resolution 1200x1200 (Max 4320x4320)
Text guidelines
Ad Name: Up to 255 characters (optional)
Headline: 70 characters max
Intro Text: 150 characters max
Description: 70 characters max (For LinkedIn Audience Network)
More info
Image Specifications Facebook
File type & size
File Types: jpg, png
File Size: Up to 30MB
Recommended Ratios
Supported ratios: from 1.91:1 to 4:5
Recommended resolution:
1:1 ratio: 1080 x 1080 pixels
4:5 ratio: 1080 x 1350 pixels
There's no maximum resolution. Upload the highest quality image within the supported ratios.
Text guidelines
Primary Text: 50-150 characters
Headline: 27 characters
More info