{
 "compat_features": [
  "api.FontFace.ascentOverride",
  "api.FontFace.descentOverride",
  "api.FontFace.lineGapOverride",
  "css.at-rules.font-face.ascent-override",
  "css.at-rules.font-face.descent-override",
  "css.at-rules.font-face.line-gap-override"
 ],
 "description": "The ascent-override, descent-override, and line-gap-override descriptors adjust the display of a font declared in an @font-face statement. This can help make fallback fonts look the same size.",
 "description_html": "The <code>ascent-override</code>, <code>descent-override</code>, and <code>line-gap-override</code> descriptors adjust the display of a font declared in an <code>@font-face</code> statement. This can help make fallback fonts look the same size.",
 "group": [
  "fonts"
 ],
 "kind": "feature",
 "name": "Font metric overrides",
 "spec": [
  "https://drafts.csswg.org/css-fonts-4/#font-metrics-override-desc"
 ],
 "status": {
  "baseline": false,
  "by_compat_key": {
   "api.FontFace.ascentOverride": {
    "baseline": false,
    "support": {
     "chrome": "87",
     "chrome_android": "87",
     "edge": "87",
     "firefox": "89",
     "firefox_android": "89"
    }
   },
   "api.FontFace.descentOverride": {
    "baseline": false,
    "support": {
     "chrome": "87",
     "chrome_android": "87",
     "edge": "87",
     "firefox": "89",
     "firefox_android": "89"
    }
   },
   "api.FontFace.lineGapOverride": {
    "baseline": false,
    "support": {
     "chrome": "87",
     "chrome_android": "87",
     "edge": "87",
     "firefox": "89",
     "firefox_android": "89"
    }
   },
   "css.at-rules.font-face.ascent-override": {
    "baseline": false,
    "support": {
     "chrome": "87",
     "chrome_android": "87",
     "edge": "87",
     "firefox": "89",
     "firefox_android": "89"
    }
   },
   "css.at-rules.font-face.descent-override": {
    "baseline": false,
    "support": {
     "chrome": "87",
     "chrome_android": "87",
     "edge": "87",
     "firefox": "89",
     "firefox_android": "89"
    }
   },
   "css.at-rules.font-face.line-gap-override": {
    "baseline": false,
    "support": {
     "chrome": "87",
     "chrome_android": "87",
     "edge": "87",
     "firefox": "89",
     "firefox_android": "89"
    }
   }
  },
  "support": {
   "chrome": "87",
   "chrome_android": "87",
   "edge": "87",
   "firefox": "89",
   "firefox_android": "89"
  }
 },
 "id": "font-metric-overrides",
 "groups": [
  "fonts"
 ],
 "specs": [
  {
   "url": "https://drafts.csswg.org/css-fonts-4/#font-metrics-override-desc",
   "seriesComposition": "full",
   "shortname": "css-fonts-4",
   "series": {
    "shortname": "css-fonts",
    "currentSpecification": "css-fonts-4",
    "title": "CSS Fonts",
    "shortTitle": "CSS Fonts",
    "releaseUrl": "https://www.w3.org/TR/css-fonts/",
    "nightlyUrl": "https://drafts.csswg.org/css-fonts/"
   },
   "seriesVersion": "4",
   "seriesNext": "css-fonts-5",
   "organization": "W3C",
   "groups": [
    {
     "name": "Cascading Style Sheets (CSS) Working Group",
     "url": "https://www.w3.org/groups/wg/css/"
    }
   ],
   "release": {
    "url": "https://www.w3.org/TR/css-fonts-4/",
    "status": "Working Draft",
    "filename": "Overview.html"
   },
   "nightly": {
    "url": "https://drafts.csswg.org/css-fonts-4/",
    "status": "Editor's Draft",
    "alternateUrls": [
     "https://w3c.github.io/csswg-drafts/css-fonts-4/",
     "https://w3c.github.io/csswg-drafts/css-fonts/"
    ],
    "repository": "https://github.com/w3c/csswg-drafts",
    "sourcePath": "css-fonts-4/Overview.bs",
    "filename": "index.html"
   },
   "title": "CSS Fonts Module Level 4",
   "source": "w3c",
   "shortTitle": "CSS Fonts 4",
   "categories": [
    "browser"
   ],
   "standing": "good",
   "tests": {
    "repository": "https://github.com/web-platform-tests/wpt",
    "testPaths": [
     "css/css-fonts"
    ]
   },
   "fragment": "font-metrics-override-desc"
  }
 ],
 "mdnUrls": [
  {
   "slug": "Web/CSS/Reference/At-rules/@font-face",
   "title": "`@font-face` CSS at-rule",
   "anchor": null,
   "url": "https://developer.mozilla.org/docs/Web/CSS/Reference/At-rules/@font-face"
  }
 ],
 "standardPositions": [],
 "hasNegativeStandardPosition": false,
 "stateOfSurveys": [],
 "chromeUseCounters": {
  "percentageOfPageLoad": 0.13042133,
  "url": "https://chromestatus.com/metrics/webfeature/timeline/popularity/353"
 },
 "interop": [],
 "wpt": {
  "url": "https://wpt.fyi/results?q=feature:font-metric-overrides"
 },
 "developerSignals": {
  "url": "https://github.com/web-platform-dx/developer-signals/issues/132",
  "votes": 3
 },
 "bugs": {
  "chrome": [
   "https://bugs.chromium.org/p/chromium/issues/detail?id=1098355"
  ]
 },
 "useCases": [
  {
   "description": "I want to improve layout shift caused by a web font with large line gaps.",
   "url": "https://github.com/web-platform-dx/developer-signals/issues/132#issuecomment-5074061789"
  }
 ],
 "baselineLowDateAsObject": null,
 "baselineHighDateAsObject": null,
 "blockedOn": "Safari",
 "blockedSince": "June 2021",
 "monthsBlocked": 63
}