There are some issues that can arise when using images that are larger than their container namely blurry/stretched images, and possibly some performance issues when scrolling through the images in a UITableView.
Today I came across a great library for finding those issues called AGImageChecker.
As the Readme states:
AGImageChecker is a lightweight iOS library that helps developers to find problems in their used images. It detects when images are smaller or different sized than their container views, producing resized or blurry images. Wrong images will have a colorfull border that helps you to detect them. Additionally, it adds a long press gesture to open an image detail and check useful information about the problem, such as the image size, the view size, the contentMode, the presence of retina version, the associated view controlller,… All of it out of the box, without changing your code (device and simulator).
In addition to this plugins can be created for AGImageChecker and included is a Dropbox plugin so images can be changed at runtime.
You can find AGImageChecker by Angel Olloqui on Github here.
A very handy plugin as you can just drop it in and automatically diagnose image issues.
via Alex Curylo
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