1. Client Hints: DPR, Width, Viewport-Width

    DPR, Width, and Viewport-Width hints enable proactive content negotiation between client and server, enabling automated delivery of optimized assets - e.g. auto-negotiating image DPR resolution.

  2. View Transitions (cross-document)

    Provides a mechanism for easily creating animated transitions between different DOM states, while also updating the DOM contents in a single step. This API is specific to cross-document transitions.

  3. Built-in PDF viewer

    Support for a PDF viewer that is part of the browser, rather than requiring a PDF file to be opened in an external application.

  4. View Transitions API (single-document)

    Provides a mechanism for easily creating animated transitions between different DOM states, while also updating the DOM contents in a single step. This API is specific to single-document transitions.

  5. Small, Large, and Dynamic viewport units

    Viewport units similar to `vw` and `vh` that are based on shown or hidden browser UI states to address shortcomings of the original units. Currently defined as the `sv*` units (`svb`, `svh`, `svi`, `svmax`, `svmin`, `svw`), `lv*` units (`lvb`, `lvh`, `lvi`, `lvmax`, `lvmin`, `lvw`), `dv*` units (`dvb`, `dvh`, `dvi`, `dvmax`, `dvmin`, `dvw`) and the logical `vi`/`vb` units.

  6. Viewport units: vw, vh, vmin, vmax

    Length units representing a percentage of the current viewport dimensions: width (vw), height (vh), the smaller of the two (vmin), or the larger of the two (vmax).

  7. svgelement api: viewportelement

  8. timeevent api: view

  9. uievent api: view

  10. viewport api

  11. viewport api: segments

  12. viewtimeline api

  13. viewtimeline api: endoffset

  14. viewtimeline api: startoffset

  15. viewtimeline api: subject

  16. viewtransition api

  17. viewtransitiontypeset api

  18. viewtransitiontypeset api: [symbol.iterator]

  19. viewtransitiontypeset api: add

  20. viewtransitiontypeset api: clear

  21. viewtransitiontypeset api: delete

  22. viewtransitiontypeset api: entries

  23. viewtransitiontypeset api: foreach

  24. viewtransitiontypeset api: has

  25. viewtransitiontypeset api: keys

  26. viewtransitiontypeset api: size

  27. viewtransitiontypeset api: values

  28. viewtransition api: finished

  29. viewtransition api: ready

  30. viewtransition api: skiptransition

  31. viewtransition api: types

  32. viewtransition api: updatecallbackdone

  33. vttregion api: viewportanchorx

  34. vttregion api: viewportanchory

  35. window api: viewport

  36. xrsubimage api: viewport

  37. css property: view-timeline

  38. css property: view-timeline-axis

  39. css property: view-timeline-inset

  40. css property: view-timeline-name

  41. css property: view-timeline: none

  42. css property: view-transition-name

  43. svg element: view

  44. svg element: view: preserveaspectratio

  45. svg element: view: viewbox

  46. svg element: view: zoomandpan