•High resolution images
• google maps, openstreetmap etc.
Items jointly developed with Web Performance Working Group.
• Lazyload for tiling and level of detail (new), and/or
• Resource Hints (new, ED)
Tiling and Layering Module for SVG 1.2 Tiny
Furthermore, in 1996:
W3C Scalable Graphics Requirements
scale = 4
Determine the resource set*1 which
should be used based on scale media
scale <= 1 1 < scale <= 2 2 < scale
Media query list:
Sequence: STEP1 (Level selection)
*1: Assume the picture element or picture element-like functionality which
chooses a set of images. These images are arranged like a mosaic tile.
*2: Assume that scale will be added to the media feature in the future.
Determine needed resources in the set
and fetch them based on viewport *1
Sequence: STEP2 (Tile selection)
*1: Assume that a property such as load-policy="when-needed“ or postpone*2 can
be used in the future.
*2:[whatwg] Preloading and deferred loading of scripts and other resources
From: Ian Hickson http://goo.gl/I40ytT