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Custom metrics struct

Appears in: pages table
As custom_metrics

Schema

Field nameTypeDescription
a11yStringAccessibility.
adsStringAdvertising technology and usage.
almanacStringMetrics defined in the early versions of Web Almanac crawls.
auroraStringProject Aurora.
avg_dom_depthIntegerThe average DOM depth of a page.
cmsStringContent Management Systems.
ColordepthStringColor depth of a screen.
cookiesStringCookie usage.
crawl_linksStringThe links found during a crawl.
cssStringCSS usage.
css-variablesStringUse of CSS variables.
doctypeStringDocument type declaration.
document_heightIntegerHeight of the document.
document_widthIntegerWidth of the document.
DpiIntegerDots per inch (DPI) of a screen.
event-namesStringEvent names used in JavaScript.
fugu-apisStringUsage of Fugu APIs.
generated-contentStringClient-side generated content.
has_shadow_rootStringPresence of shadow DOM roots.
ImagesStringImages usage.
img-loading-attrStringImage loading attributes.
initiatorsStringResource initiators.
inline_style_bytesIntegerSize of inline styles.
javascriptStringJavaScript usage.
lib-detector-versionStringLibraries detector version.
localstorage_sizeIntegerSize of local storage.
markupStringHTML markup.
mediaStringMedia elements.
meta_viewportStringMeta viewport tag.
num_iframesIntegerNumber of iframes on a page.
num_scriptsIntegerNumber of script tags.
num_scripts_asyncIntegerNumber of asynchronous scripts.
num_scripts_syncIntegerNumber of synchronous scripts.
observersStringMetrics related to the usage of observer APIs.
performanceStringWeb performance.
privacy-sandboxStringPrivacy Sandbox initiative usage.
privacyStringPrivacy settings and policies.
pwaStringProgressive Web Apps.
quirks_modeStringUsage of quirks mode in browsers.
ResolutionIntegerResolution of a screen.
responsive_imagesStringResponsive image techniques.
robots_metaStringRobots meta tag.
robots_txtStringrobots.txt file.
sassStringUsage of Sass.
securityStringSecurity features.
sessionstorage_sizeIntegerSize of session storage.
structured-dataStringStructured data.
third-partiesStringThird-party resources.
usertimingStringUser Timing API.
valid-headStringValidity of the head element.
well-knownStringwell-known URIs.
wpt_bodiesStringMetrics derived from WebPageTest bodies object.

a11y

Accessibility.

ads

Advertising technology and usage.

See the ads custom metric for more information.

almanac

Metrics defined in the early versions of Web Almanac crawls.

aurora

Project Aurora.

avg_dom_depth

The average DOM depth of a page.

cms

Content Management Systems.

Colordepth

Color depth of a screen.

cookies

Cookie usage.

The links found during a crawl.

css

CSS usage.

css-variables

Use of CSS variables.

doctype

Document type declaration.

document_height

Height of the document.

document_width

Width of the document.

Dpi

Dots per inch (DPI) of a screen.

event-names

Event names used in JavaScript.

fugu-apis

Usage of Fugu APIs.

generated-content

Client-side generated content.

has_shadow_root

Presence of shadow DOM roots.

Images

Images usage.

img-loading-attr

Image loading attributes.

initiators

Resource initiators.

inline_style_bytes

Size of inline styles.

javascript

JavaScript usage.

lib-detector-version

Libraries detector version.

localstorage_size

Size of local storage.

markup

HTML markup.

media

Media elements.

meta_viewport

Meta viewport tag.

num_iframes

Number of iframes on a page.

num_scripts

Number of script tags.

num_scripts_async

Number of asynchronous scripts.

num_scripts_sync

Number of synchronous scripts.

observers

Metrics related to the usage of observer APIs.

performance

Web performance.

See the performance custom metric for more information.

privacy-sandbox

Privacy Sandbox initiative usage.

privacy

Privacy settings and policies.

See the privacy custom metric for more information.

pwa

Progressive Web Apps.

quirks_mode

Usage of quirks mode in browsers.

Resolution

Resolution of a screen.

responsive_images

Responsive image techniques.

robots_meta

Robots meta tag.

robots_txt

robots.txt file.

sass

Usage of Sass.

security

Security features.

sessionstorage_size

Size of session storage.

structured-data

Structured data.

third-parties

Third-party resources.

usertiming

User Timing API.

valid-head

Validity of the head element.

well-known

well-known URIs.

wpt_bodies

Metrics derived from WebPageTest bodies object.