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Steps to add Bookmarklet on iPhone:

To use on iPhone:

When you want to use the Bookmarklet, load the image from your Tamagotchi Uni QR code.
After loading the image page, press the bookmark button on the bottom bar, then select 'Uni Sizetchi'.
It will automatically convert your blurry bmp image to a properly scaled png image at 2 different sizes.
You can long-press on either image to download it to your phone.

Steps to add Bookmarklet on Android (Chrome):

To use on Android:

When you want to use the Bookmarklet, load the image from your Tamagotchi Uni QR code.
In the URL box, start typing "Uni Sizetchi". You will see a suggestion for the Bookmarklet that will say "Uni Sizetchi" with "/Mobile Bookmarks" under it and a star next to it.
Tap that option and a page will load with two different sized PNG images.