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How to Use JPEG 2000 (JP2) for a Faster Images on iPhone (Sponsored)

Images Slow Down Websites

Images slow down the page-loading performance of many websites. Audit tools like Google’s Lighthouse can quickly tell you how many seconds you can save by optimizing your images. When you are delivering to desktops or android devices running Chrome browser, a quick solution is to convert your images to WebP. This can save up to 80% in your image payload. 

Accelerating Apple Safari Users

But what about Apple iPhones or iPads or any laptop running Safari browser? For many companies or organizations, Apple devices can make up more than 50% of their traffic. Unfortunately, Apple Safari does not support WebP. However, a little known but powerful image file format called JPEG 2000 (mimetype image/jp2) is supported since Safari 5 and iOS 5 with some exceptions. The trick is identifying Safari users and quickly serving images in JPEG2000 format. 

What is JPEG 2000?

JPEG2000 is an image standard created in the year 2000.

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