Good to know
Simple first.
Adds the mat border to both sides of the artwork.
Free · No sign-up · PrivateImage & Photo
Frame / Mat Size Calculator.
Work out a clean mat and finished frame size from your artwork.
1 Enter2 Adjust3 Use result
Input
Answer
500 × 400
Finished size after adding 50 on every side
Adds the mat border to both sides of the artwork.
Private by design
Files stay with you.
The actual file processing happens in your browser. A small number of advanced tools may load a browser helper library, but OutMonkey does not upload your file to do the job.
How file handling works →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.
What this tool is for
Frame / mat size calculator
Calculate a finished frame and mat size. The aim is a useful result without making you learn a full piece of software first.
Good to know
Keep the original until you’re happy.
Open the finished image once before you send or upload it. Check the crop, sharpness and file size at normal viewing size, not only while zoomed in.
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.
If you are helping someone who does not work with images every day, the destination matters more than the jargon: email, print, a website, an ID form or social media.
For most image jobs, start with where the image is going: email, print, a website, an ID form or a social platform.
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.