SizeComparison.com also works and should be easier to memorize. What you can do with it: search and select items, and click 'Compare' to place them on the canvas to do an instant size comparison. There are currently roughly 900 items available for comparison, including lots of size reference items (like a credit card, A4 paper, banana for scale, etc), with more to come! You can compare up to 25 items on the canvas at once. All items can be freely dragged around, but also automatically sorted my height or release date. Items can be duplicated, rotated, deleted, and can also have buttons available to check out the full specs and availability. All common keyboard shortcuts work. It's all very customizable; use the size slider to change the size the objects on the canvas, make All items (semi)transparent to overlay them. Change what text to display for each item, in what size and color, and/or change the background color. You can save your comparison as an image, or use the sharing button to copy the URL that loads the canvas exactly as you have at on load. Here are a few examples of use cases - these links automatically load these comparisons: Current iPhone line-up Popular gaming handhelds Kindle and Kobo e-readers Picking a TV screen size & soundbar JBL bluetooth speakers sizes So that's it! Spent well over two months to build this, and it was way more of a headache to get right than I thought it would be. Hope you like it or find it useful! Let me know if there are any products you'd like to see added or have any other feedback.   submitted by   /u/CookieDelivery [link]   [comments]