New features in Firefox 153 (released on 2026-07-21)

• IndexedDB getAllRecords()

  Limited availability

  The getAllRecords() method of IDBObjectStore and IDBIndex return records and their primary keys from an IndexedDB store or index. The records can be read in batches and in reverse order. The getAllRecords() methods speed up read operations on large datasets.

  Learn more

  • Chrome 141 Released on 2025-09-30
  • Chrome Android 141 Released on 2025-09-30
  • Edge 141 Released on 2025-10-03
  • Firefox 153 Released on 2026-07-21
  • Firefox for Android 153 Released on 2026-07-21
  • Safari Not supported Position: support
  • Safari on iOS Not supported Position: support

  Baseline availability blocked since July 2026 by Safari (1 months)

• Intl.Locale info

  Newly Available (since 2026-07-21)

  The getter methods of the Intl.Locale API provide supplemental information about a Unicode locale, such as the locale's calendar (for example, the first day in a week or the weekend start day), writing direction, 12- or 24-hour cycles, and numbering system.

  Learn more

  • Chrome 130 Released on 2024-10-15
  • Chrome Android 130 Released on 2024-10-15
  • Edge 130 Released on 2024-10-17
  • Firefox 153 Released on 2026-07-21
  • Firefox for Android 153 Released on 2026-07-21
  • Safari 17 Released on 2023-09-18
  • Safari on iOS 17 Released on 2023-09-18

• Picture-in-picture (video)

  Limited availability

  The picture-in-picture API allow websites to create a floating, always-on-top video window. Also known as PiP or pop-out video.

  Learn more

  • Chrome 69 Released on 2018-09-04
  • Chrome Android 105 Released on 2022-09-02
  • Edge 79 Released on 2020-01-15
  • Firefox 153 Released on 2026-07-21
  • Firefox for Android Not supported Position
  • Safari 13.1 Released on 2020-03-24
  • Safari on iOS 13.4 Released on 2020-03-24

  Baseline availability blocked since July 2026 by Firefox (1 months)

• popover="hint"

  Limited availability

  The popover="hint" global HTML attribute creates a popover that is subordinate to popovers with a popover="auto" attribute. You can use this to create tooltips that don't dismiss auto popovers.

  Learn more

  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 153 Released on 2026-07-21
  • Firefox for Android 153 Released on 2026-07-21
  • Safari Not supported
  • Safari on iOS Not supported

• JavaScript promise integration (WebAssembly)

  Limited availability

  The JavaScript promise integration (JSPI) suspends a WebAssembly module when it calls a JavaScript method that returns a promise. The module resumes when the promise is resolved. You can use this to call asynchronous Web APIs from synchronous WebAssembly.

  Learn more

  • Chrome 137 Released on 2025-05-27
  • Chrome Android 137 Released on 2025-05-27
  • Edge 137 Released on 2025-05-29
  • Firefox 153 Released on 2026-07-21
  • Firefox for Android 153 Released on 2026-07-21
  • Safari Not supported
  • Safari on iOS Not supported

  Baseline availability blocked since July 2026 by Safari (1 months)