Features missing only in Chromium

The following features are implemented in all other browser engines, but not in Chromium.

• accent-color

  Limited availability

  The accent-color CSS property sets a color for checkboxes, radio buttons, and other form controls.

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  • Chrome 93 Released on 2021-08-31
  • Chrome Android Not supported
  • Edge 93 Released on 2021-09-02
  • Firefox 92 Released on 2021-09-07
  • Firefox for Android 92 Released on 2021-09-07
  • Safari 26.2 Released on 2025-12-12
  • Safari on iOS 26.2 Released on 2025-12-12

  Baseline availability blocked since December 2025 by Chromium (7 months)

• autocorrect

  Limited availability

  The autocorrect global HTML attribute controls whether to automatically correct spelling or punctuation errors for user input.

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  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 136 Released on 2025-03-04
  • Firefox for Android 136 Released on 2025-03-04
  • Safari 14.1 Released on 2021-04-26
  • Safari on iOS 14.5 Released on 2021-04-26

  Baseline availability blocked since March 2025 by Chromium (16 months)

• Clearing site data

  Limited availability

  The Clear-Site-Data header deletes browsing data (such as cookies, storage, or cache) associated with the requesting website.

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  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 138 Released on 2025-04-29
  • Firefox for Android 138 Released on 2025-04-29
  • Safari 17 Released on 2023-09-18
  • Safari on iOS 17 Released on 2023-09-18

  Baseline availability blocked since April 2025 by Chromium (15 months)

• color-adjust

  The color-adjust shorthand CSS property allows multiple performance related color adjustments to be set at once. Setting the print-color-adjust CSS property directly is preferred, as it is the only such adjustment so far defined.

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  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 48 Released on 2016-08-02
  • Firefox for Android 48 Released on 2016-08-02
  • Safari 15.4 Released on 2022-03-14
  • Safari on iOS 15.4 Released on 2022-03-14

  Baseline availability blocked since March 2022 by Chromium (52 months)

• fastSeek()

  Limited availability

  The fastSeek() method seeks an <audio> or <video> element as fast as possible, by seeking to a keyframe instead of exactly the requested time.

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  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 31 Released on 2014-07-22
  • Firefox for Android 31 Released on 2014-07-22
  • Safari 8 Released on 2014-10-16
  • Safari on iOS 8 Released on 2014-09-17

  Baseline availability blocked since October 2014 by Chromium (141 months)

• Fetch form data

  Limited availability

  The Request.formData() and Response.formData() methods read a request or response body and return a FormData promise. You can use it to access the fields of a form submission.

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  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 39 Released on 2015-07-02
  • Firefox for Android 39 Released on 2015-07-02
  • Safari 14.1 Released on 2021-04-26
  • Safari on iOS 14.5 Released on 2021-04-26

  Baseline availability blocked since April 2021 by Chromium (63 months)

• Media element pseudo-classes

  Limited availability

  The :playing, :paused, :seeking, :buffering, :stalled, :muted, and :volume-locked CSS pseudo-classes match <audio> and <video> elements based on their state.

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  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 150 Released on 2026-04-21
  • Firefox for Android 150 Released on 2026-04-21
  • Safari 15.4 Released on 2022-03-14
  • Safari on iOS 15.4 Released on 2022-03-14

  Baseline availability blocked since April 2026 by Chromium (3 months)

• Exception references with exnref (WebAssembly)

  Limited availability

  When caught, an exception is reified into an exception reference, a value of the new type exnref.

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  • Chrome 137 Released on 2025-05-27
  • Chrome Android 137 Released on 2025-05-27
  • Edge Not supported
  • Firefox 131 Released on 2024-10-01
  • Firefox for Android 131 Released on 2024-10-01
  • Safari 18.4 Released on 2025-03-31
  • Safari on iOS 18.4 Released on 2025-03-31

  Baseline availability blocked since May 2025 by Chromium (14 months)

• iterationComposite

  Limited availability

  The iterationComposite property of a KeyframeEffect object sets whether an animation's iterations are calculated independently ("replace") or are accumulated with the value of the previous iteration ("accumulate").

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  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 80 Released on 2020-08-25
  • Firefox for Android 80 Released on 2020-08-31
  • Safari 16.4 Released on 2023-03-27
  • Safari on iOS 16.4 Released on 2023-03-27

  Baseline availability blocked since March 2023 by Chromium (40 months)

• WebVTT cue alignment

  Limited availability

  The WebVTT cue alignment settings control which part of the cue is aligned with the given line and position. Cue alignment is set using line and position settings in WebVTT files or the lineAlign and positionAlign properties of VTTCue using JavaScript.

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  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 31 Released on 2014-07-22
  • Firefox for Android 31 Released on 2014-07-22
  • Safari 14.1 Released on 2021-04-26
  • Safari on iOS 14.5 Released on 2021-04-26

  Baseline availability blocked since April 2021 by Chromium (63 months)

• WebVTT regions

  Limited availability

  WebVTT regions set the areas of the video where captions or subtitles should be rendered, such as placing roll-up captions used for live captions.

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  • Chrome Not supported
  • Chrome Android Not supported
  • Edge Not supported
  • Firefox 59 Released on 2018-03-13
  • Firefox for Android 59 Released on 2018-03-13
  • Safari 14.1 Released on 2021-04-26
  • Safari on iOS 14.5 Released on 2021-04-26

  Baseline availability blocked since April 2021 by Chromium (63 months)