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Multi-Opening Photo Collage Mat Designer

Design your very own custom photo collage. Get started with our easy to use multi-opening collage designer and create the photo collages you always wanted! Purchase photo mats with a frame, or buy them as standalone mats!

It looks like you are using a mobile device or tablet. Our Custom Mat Designer works best on laptop or desktop devices with a trackpad, mouse or other pointing device. You may still use our designer on mobile devices, but not all features are available.

Scroll down for more design controls

Mat Auto-Layout Designer

WARNING Using the auto mat layout designer will reformat your entire multi-opening mat and modify all of your mat openings. If you do not wish to modify your custom mat, or are done using the auto layout tool, disable the auto mat designer.

Opening Type:

You can change the individual opening type by clicking on the openings and toggling between round and corner openings in the opening modifier.


Modify an Opening

Modify your selected opening

Review your multi-opening mat

Mat openings should overlap your picture by 1/8" on all sides of the opening so that your picture does not fall through the opening once framed. Example: For a 4" x 6" image, your mat opening should be 3.75" x 5.75".

  • opening mat (" x ")
  • Top Mat:
  • Second Mat:
  • Price: $

Choose an option to aid in free designing your collage mat. Movements and resizes will automatically be adjusted (in inches) in increments of the scale you choose. If you choose Free Transform, movements and resizes will be unconstrained.

Toggle the Placement Grid to help visualize and measure your changes. The grid will show lines spaced in the scale you choose below. If you choose Free Transform, the grid will show lines spaced one inch apart.

Free 1/8" 1/4" 1/2" 1"
Free
Transform
0.125"
0.250"
0.500"
1.00"

Select from the colors below layer. Mats larger than 40" x 32" are considered oversize. Only a limited selection of mat colors will be available at those sizes.

All Mats
Your Mats
Standard Mats
Other Mats
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
Frames By Mail Custom Multi-Opening Mat
You must sign in to view your mats. Mats added to your cart or purchased are automatically saved and shown here.

Choose what kind of opening you would like to add to your mat.

Or choose one of your existing images

preview upload image

Max Print Size:

Your uploaded image has an aspect ratio of [A] (X"xY") and your mat opening has an aspect ratio of [A] (X"xY"). If the image aspect ratios do not match, you can either fit the image to the opening without resiziing the opening, or you can resize the opening to accomodate your image. Alternatively, you can crop your image to the desired aspect ratio and reupload it if you do not want to adjust the opening or fit your image.

Important: We will increase your image by 1/8" on all sides so your image does not fall through the mat opening and the edges don't clip. Example, if your mat opening is 4" x 6" we will print your image at 4.5" x 6.5".

Add images from your gallery?

Mats larger than 40" x 32" are considered oversize. Only a limited selection of mat colors will be available at those sizes.



Design a custom multi-opening collage mat using our custom mat designer. You can use our auto-layout mat designer to automatically create a collage mat based on your desired settings, or you can free design the multi-opening collage mat.

Design Constraints:

  • Corner Mat openings must be at least 1.35" from the edge of the mat. Round Mat openings must be at least 1.5" from the edge of the mat.
  • Mat openings must not overlap and must be at least 0.75" from each other.
  • Spacing requirements include all mat layers in distance calculation, not just the opening.
  • Mat may be no larger than 60" x 40".

Three Design modes to choose from:

Free Design: You can freely move and resize each opening individually, place an opening where ever you want, and movements and resizes will not be constrained.

Assisted Mat Design: Similar to free design, you can move and resize each opening individually, but your movements and resizes will snap to place in increments of which ever scale you choose from (choose from 1", ½", ¼", and ⅛").

Auto Mat Design: The auto mat designer allows you in type in your desired mat layout and our website will automatically generate a multi-opening collage mat based on your settings. From there you can manually adjust (Free Design) the mat if you choose or purchase it as is.


Using the Auto Mat Designer

First, make sure the Mat Auto-Layout Designer is enabled. WARNING: USING THE AUTO-LAYOUT DESIGNER WILL ERASE ANY DESIGNS YOU HAVE ALREADY MADE.

Disabled designer button

Disabled: The Auto Layout Designer is disabled. You can manually drag and resize each opening.

Enabled designer button

Enabled: The Auto Layout Designer is enabled. You may not manually drag or opening using the free transform tool, but can input your desired number of openings, widths, heights and spacings in order to automatically generate your collage mat.

Once you have enabled the auto mat designer, you can customize your multi-opening collage mat by first choosing your opening width and height, then selecting the number of rows and columns for your mat. Finally, change the inside spacing and outside margin around the openings.

Frames By Mail custom collage mat designer instructions

The auto-layout designer will affect all openings and disable free transforming the mat openings, but you can still click on an individual opening to remove or modify it. Once you have selected an opening, the opening modifer (shown below) can be used to resize and reposition an individual opening. If you leave the auto-layout designer enabled, this will prevent free transforming the mat openings which might prevent accidental modifications to your mat. If you disable the auto-layout designer, you may free transform the mat again.

Frames By Mail custom collage mat designer instructions

Using the Assisted Layout Designer

To get started with the assisted layout designer, first click the assisted layout designer button:

designer button

Once you assisted layout designer opens, you can select a scale to make movements and resizes in. The scale you choose will determine the increments your adjustments are made in. You will notice the resizes and movements become 'jumpy' as they are forced to move in certain increments now.

designer button

Trouble Shooting

If run into problems, check out some of the common issues and their solutions below:

  • The mat opening is stuck and won't resiize: If your mat opening becomes stuck or cannot be adjusted, it is likely because it overflowing the mat after resizing. You can use the number inputs to make the mat opening smaller then drag and reposition the opening.
  • The number inputs are not adjusting my mat by the proper scale: Open up the Assisted Grid Layout options and select 'Free Transform'.
  • I can't drag and reposition the mat opening: Make sure you disable the auto-layout designer then try to drag and drop your opening.
  • The mat opening is still stuck: Delete the opening by selecting the opening and then clicking 'Remove Selected Opening'. You can then manually add an opening back in its place by clicking 'Cut new mat opening'.
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