Issues

• Revisit: No-Vary-Search + reserved client creation URL mismatch

  WICG/nav-speculation#441 · Filter by author hiroshige-g opened on Oct 7, 2026
  1

• speculation.PreloadingStatus should be revamped

  WICG/nav-speculation#437 · Filter by author hiroshige-g opened on Aug 17, 2026

• Expose Sec-Speculation-Tags to destination pages via PerformanceNavigationTiming

  WICG/nav-speculation#435 · Filter by author alonkochba opened on May 27, 2026
  1

• Concern with pre-rendering of cross-origin documents

  WICG/nav-speculation#434 · Filter by author annevk opened on May 20, 2026
  9

• Require https for cross-origin

  WICG/nav-speculation#429 · Filter by author zcorpan opened on Mar 18, 2026
  2

• Do we need a new Sec-Purpose value for prender_until_script?

  WICG/nav-speculation#425 · Filter by author tunetheweb opened on Jan 23, 2026
  1

• Delay loading of eager images until the page is activated

  WICG/nav-speculation#422 · Filter by author verlok opened on Jan 9, 2026
  3

• Specify when speculations should run

  WICG/nav-speculation#419 · Filter by author tunetheweb opened on Dec 1, 2025

• "update the successor for activation" should probably not be called in parallel

  bugprerendering
  WICG/nav-speculation#402 · Filter by author domenic opened on Jul 29, 2025

• ServiceWorker client creation URL + No-Vary-Search

  bugno-vary-searchprerendering
  WICG/nav-speculation#396 · Filter by author hiroshige-g opened on Jun 30, 2025
  4

• Need observability on the prefetching/prerendering page

  enhancement
  WICG/nav-speculation#383 · Filter by author stoyan opened on May 23, 2025
  5

• Website-provided anonymizing proxy

  enhancementprefetch
  WICG/nav-speculation#368 · Filter by author zcorpan opened on Mar 17, 2025
  6

• When navigation is redirected to prefetch record's URL, should it be served by the prefetch?

  needs spec editsprefetch
  WICG/nav-speculation#367 · Filter by author hiroshige-g opened on Mar 12, 2025 · Upstream prefetch
  4

• Allow external <script type=speculationrules>

  enhancementspeculation rules
  WICG/nav-speculation#348 · Filter by author bramus opened on Dec 6, 2024
  4

• Prefetch requests keeping the service worker alive and preventing it from revving its version

  bugin progressprefetch
  WICG/nav-speculation#347 · Filter by author domenic opened on Dec 2, 2024 · Upstream prefetch
  7

• Clarify navigation automation

  enhancementprerendering
  WICG/nav-speculation#342 · Filter by author sadym-chromium opened on Oct 24, 2024
  7

• Way of allowing simple form-based navigations for Search

  WICG/nav-speculation#322 · Filter by author tunetheweb opened on Jun 11, 2024
  9

• Add prerendering security and privacy considerations to the spec

  needs spec editsprerendering
  WICG/nav-speculation#319 · Filter by author kjmcnee opened on May 21, 2024
  2

• Add Callback to Prerender State

  enhancementprerendering
  WICG/nav-speculation#306 · Filter by author giorgiopellegrino opened on Mar 25, 2024
  6

• Add Prerender Until Script

  enhancement
  WICG/nav-speculation#305 · Filter by author tvereecke opened on Mar 25, 2024
  8

• Prefetching and cookie changes

  enhancementprefetch
  WICG/nav-speculation#302 · Filter by author jeremyroman opened on Mar 7, 2024
  3

• Add an HTML attribute to delay JS execution after ActivationStart

  enhancementprerendering
  WICG/nav-speculation#290 · Filter by author tvereecke opened on Dec 5, 2023
  4

• Expose the reasons for prerender or prefetch cancellation in the API

  enhancementprefetchprerendering
  WICG/nav-speculation#270 · Filter by author screenspan opened on Apr 27, 2023

• Make prefetch records not Document-scoped?

  enhancementin progressprefetch
  WICG/nav-speculation#266 · Filter by author hiroshige-g opened on Apr 7, 2023
  1

• Re-evaluate treatment of unknown keys

  enhancementspeculation rules
  WICG/nav-speculation#244 · Filter by author jeremyroman opened on Jan 25, 2023