1. DOMContentLoaded

    JavaScript event that fires when the DOM is loaded, but before all page assets are loaded (CSS, images, etc.).

  2. Download attribute

    When used on an anchor, this attribute signifies that the browser should download the resource the anchor points to rather than navigate to it.

  3. CSS Font Loading

    This CSS module defines a scripting interface to font faces in CSS, allowing font faces to be easily created and loaded from script. It also provides methods to track the loading status of an individual font, or of all the fonts on an entire page.

  4. Resource Hints: Lazyload

    Gives a hint to the browser to lower the loading priority of a resource. Please note that this is a legacy attribute, see the [`loading`](/loading-lazy-attr) attribute for the new standardized API.

  5. Resource Hints: modulepreload

    Using `<link rel="modulepreload">`, browsers can be informed to prefetch module scripts without having to execute them, allowing fine-grained control over when and how module resources are loaded.

  6. Resource Hints: preload

    Using `<link rel="preload">`, browsers can be informed to prefetch resources without having to execute them, allowing fine-grained control over when and how resources are loaded. Only the following `as` values are supported: fetch, image, font, script, style, track.

  7. Lazy loading via attribute for images & iframes

    The `loading` attribute on images & iframes gives authors control over when the browser should start loading the resource.

  8. Lazy loading via attribute for video & audio

    The `loading` attribute on video & audio elements gives authors control over when the browser should start loading the media resource, allowing deferred loading until the element is near the viewport.

  9. fontfaceset api: load

  10. fontface api: load

  11. fontface api: loaded

  12. htmliframeelement api: loading

  13. htmlimageelement api: loading

  14. htmlmediaelement api: load

  15. htmlmediaelement api: loading

  16. largestcontentfulpaint api: loadtime

  17. mediakeysession api: load

  18. performanceelementtiming api: loadtime

  19. performancenavigationtiming api: loadeventend

  20. performancenavigationtiming api: loadeventstart

  21. performancetiming api: loadeventend

  22. performancetiming api: loadeventstart

  23. progressevent api: loaded

  24. window api: `load` event

  25. html element: audio: loading

  26. html element: iframe: loading

  27. html element: img: loading

  28. html element: video: loading

  29. javascript built-in: atomics: load

  30. svg element: use: load from `data:` uri

  31. svg element: use: load from external uri

  32. instructions: load

  33. instructions: load16x4_s

  34. instructions: load16x4_u

  35. instructions: load16_lane

  36. instructions: load16_splat

  37. instructions: load32x2_s

  38. instructions: load32x2_u

  39. instructions: load32_lane

  40. instructions: load32_splat

  41. instructions: load32_zero

  42. instructions: load64_lane

  43. instructions: load64_splat

  44. instructions: load64_zero

  45. instructions: load8x8_s

  46. instructions: load8x8_u

  47. instructions: load8_lane

  48. instructions: load8_splat