What this tool is for
Cover / thumbnail maker
Create common cover and thumbnail sizes. The aim is a useful result without making you learn a full piece of software first.
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Make a cover or thumbnail.
Choose a common cover shape, preview the crop, and download a new copy.
1 Choose2 Adjust3 Live preview4 Download
Before you finish
A quick check makes a better result.
OutMonkey is built to be simple enough for someone doing this once and useful enough for someone who does it every day.
Good to know
Check it where people will actually see it.
Preview the result at phone size and keep important text, faces and logos away from edges or interface areas that a platform may cover.
If the result is for someone else, open it once as they would see it. That simple check catches a surprising number of tiny mistakes.
In plain English
You do not need to be an expert.
Platform specifications change. Use these sizes and previews as a practical starting point, then check the current upload screen if a platform rejects the file.
Start with the placement, then worry about the exact pixel dimensions.
File size & formats
Big images use more memory than their file size suggests.
What can I use?
JPG, PNG and WebP are the safest choices. Other image formats work when your browser can decode them.
Is there a size limit?
There is no extra OutMonkey upload-size cap in the browser interface. Very high-resolution images can still hit your browser or device memory limit, especially when enlarging them.
If the file is huge
If an enormous image will not process, use a smaller copy or reduce its pixel dimensions first. Keep the original untouched.