I have created a better version with much better and stronger connectivity. I have attached the zip archive and a new profile named 'Heart-Photo-Frame-Fridge-Magnet-V2'.
In the archive and the Print Profile, you will find all the magnet variants as in the first version.
I hope you like this 'Version 2' as well, and please let me know in the comments which one you prefer more, the initial version or Version 2

I created this heart-shaped fridge magnet for my wife. I hope you and your loved ones will enjoy it as well. In the profile file, you will find a stencil for cutting the image into a heart shape and several back cover options for different magnet sizes, such as:

• 5x2 Round Magnet
• 5x3 Round Magnet
• 6x2 Round Magnet
• 6x3 Round Magnet
• 8x2 Round Magnet
• 8x3 Round Magnet
• 10x3 Round Magnet

You only need to select the back cover you need and leave the others unchecked. Click on "Slice" and "Print".

I recommend printing it with a low layer height, 0.12 mm or a maximum of 0.16 mm, for better sealing; the clips will be much stronger.