• Image Size and Quality

Image Size

It is recommended that exported images are resized so that their longest side has 2008 pixels. This size results in good image quality for all iOS devices and is suitable for AirPlay and external monitors.

However, there are a few situations in which you may wish to change this default size:

1. If you are using a high-definition monitor you may wish to increase the size of exported images.
2. If you are using an iPad 2, iPad mini, iPhone or iPod Touch and you are not using AirPlay or an external monitor, you may wish to reduce the size of exported images in order to save space. The following table gives the receommended sizes for different iOS devices.

   Device	Longest Side
   iPad 2 / iPad mini	1004
   iPhone 5 / iPod Touch 5G	1096
   iPhone 4 / iPod Touch 4G	920
   Older Devices	460

Image Quality

Depending on the aspect ratio of the cropped image in Lightroom, with the recommended settings an exported image will contatin roughly 2 to 4 MBytes of data.

For many images, lower JPEG quality makes no descernable difference. Therefore, to give users more control over the amount of storage required for their galleries,the GalleryLR plugins offer three preset quality options - Low, Medium and High.

The following table gives typical data sizes for images exported with the different options.

Image Size	JPEG Quality	Images Size (KBytes)
2008	High	3100
2008	Medium	999
2008	Low	595
1004	High	977
1004	Medium	417
1004	Low	286

A JPEG Qaulity of Medium reduces image size and in most cases, gives acceptable image quality.