• Support animated gifs in web view
• Support animated gifs in native image gallery

Problem

SDWebImage API doesn't allow you to read (or write) image data directly from disk (as it's optimized for memory <- disk <- network fallbacks). This has led to us serializing images from the cache before returning to the WebView. Unfortunately, there's no built-in support for serializing GIFs from a UIImage.

Possible Solutions

• Add a library to serialize GIFs from UIImage (e.g. https://github.com/mattt/AnimatedGIFImageSerialization)
• Serve the unaltered data from the server to the UIWebView, using our own downloader combined with disk caching w/ the shared SDImageCache
• Disable the article image protocol and see what happens?

Key Metrics

• CPU
• Disk
• Memory
• Network
• First paint(?)

When presenting a page w/ many images and a warm/cold cache.

Related tickets: T95350