Browser security
Compatibility & evidence
Browser privacy

Permissions Policy: microphone

Controls whether this document and its frames may use microphone.

Support in current browsers

Checked against the current browser versions recorded in MDN browser data 8.1.5.

BrowserMinimumOutcomeReason
Chrome155WorksEvery required mapped BCD feature is available without a recorded qualification.
Edge154WorksEvery required mapped BCD feature is available without a recorded qualification.
Firefox157Not supportedAt least one required mapped feature is not available at this browser baseline.
Safari27Not supportedAt least one required mapped feature is not available at this browser baseline.
Chrome for Android155WorksEvery required mapped BCD feature is available without a recorded qualification.
Firefox for Android157Not supportedAt least one required mapped feature is not available at this browser baseline.
Safari on iOS27Not supportedAt least one required mapped feature is not available at this browser baseline.
Android WebView155WorksEvery required mapped BCD feature is available without a recorded qualification.
Samsung Internet30.0WorksEvery required mapped BCD feature is available without a recorded qualification.
The release trace

How support changed

Each segment groups recorded releases with the same result. Gaps between recorded versions are not filled in. This is support at each release, rather than the planner’s check of every release above a minimum.

Chrome

http.headers.Permissions-Policy.microphone
  1. 1 – 8786 recorded releases
    Not supported
  2. 88 – 15568 recorded releases
    Works

Edge

http.headers.Permissions-Policy.microphone
  1. 12 – 8715 recorded releases
    Not supported
  2. 88 – 15467 recorded releases
    Works

Firefox

http.headers.Permissions-Policy.microphone
  1. 1 – 157160 recorded releases
    Not supported

Safari

http.headers.Permissions-Policy.microphone
  1. 1 – 2761 recorded releases
    Not supported

Chrome for Android

http.headers.Permissions-Policy.microphone
  1. 18 – 8763 recorded releases
    Not supported
  2. 88 – 15568 recorded releases
    Works

Firefox for Android

http.headers.Permissions-Policy.microphone
  1. 4 – 157141 recorded releases
    Not supported

Safari on iOS

http.headers.Permissions-Policy.microphone
  1. 1 – 2758 recorded releases
    Not supported

Android WebView

http.headers.Permissions-Policy.microphone
  1. 1 – 8758 recorded releases
    Not supported
  2. 88 – 15568 recorded releases
    Works

Samsung Internet

http.headers.Permissions-Policy.microphone
  1. 1.0 – 14.233 recorded releases
    Not supported
  2. 15.0 – 30.019 recorded releases
    Works

BCD 8.1.5 · catalogue 2.3.0. Source corrections can change this trace without a new browser release.

A fixed result snapshot

What those browser runs reported

Reviewed 11 October 2026

These are published results from specific stable-labelled browser builds. They are separate from the compatibility calculation and from evidence about your application. File outcomes and subtest counts stay separate. OK describes a completed harness, which can still contain failing subtests; Pass and Fail can also describe tests without a harness.

Selected directive tests: Microphone policy violation reports when audio access is blocked or allowed in report-only mode.

These files also depend on reporting support and media-test automation. Their outcomes do not isolate basic microphone blocking or cover every frame allowlist and device.

Counts cover every subtest reported by each selected file, including any setup or complementary cases. They are not isolated directive pass counts or application evidence.

Exact browser builds, systems and source revision
  • firefox 157.0 · linux 22.04 · stable
    Run 4877098740350976 · 2026-10-06T10:36:34.451Z to 2026-10-06T11:50:28.028Z
    cc74d2669f5de548e808779877d1d33339ec5115
  • safari 27.0 (22625.1.29.11.27) · mac 27.0 · stable
    Run 5164107446878208 · 2026-10-06T06:14:03.64Z to 2026-10-06T09:13:55.471Z
    cc74d2669f5de548e808779877d1d33339ec5115
  • chrome 154.0.8037.92 · linux 22.04 · stable
    Run 6218298311311360 · 2026-10-06T07:44:01.102Z to 2026-10-06T11:57:16.569Z
    cc74d2669f5de548e808779877d1d33339ec5115

“Stable” is the upstream run label. Complete runtime flags were not supplied by the summary API. These results do not cover every browser version, mobile platform or operating system.

Microphone policy reporting

permissions-policy

2 of 2 selected test files have retained results. The parent directory contains 118 retained files from 161 returned search matches. Only the exact files listed below enter these totals.

Browser buildSubtests passed / reportedFile outcomes
firefox
157.0		0 / 21 OK · 1 Timeout
safari
27.0 (22625.1.29.11.27)		0 / 21 OK · 1 Timeout
chrome
154.0.8037.92		2 / 22 OK
Read all 2 retained file results
Test filefirefoxsafarichrome
reporting/microphone-report-only.https.htmlTimeout · 0/1 subtestsTimeout · 0/1 subtestsOK · 1/1 subtests
reporting/microphone-reporting.https.htmlOK · 0/1 subtestsOK · 0/1 subtestsOK · 1/1 subtests

Source API query (whole directory)Test source at the run revision

Source-response fingerprintSHA-256 150245d1d61d5ee8bd787fd2cfb3d5520a0db0965f2af0140d8ba5b382f5489c

The digest identifies the complete downloaded directory response used for this projection, before file selection. It does not authenticate the runner or prove that the results are truthful.

What this feature can and cannot do

Helps protect against

  • Unexpected capability use
  • Over-privileged embedded content

Does not guarantee

  • Application authorisation
  • User permission decisions
  • Other capabilities

What you need before using it

  • An explicit capability and frame allowlist
  • Review of inherited frame restrictions

Fallback to keep in place

Request only necessary capabilities and provide a usable path when access is denied.