SEO experiment: rewrite Web/API page titles 🧪

[caugner]

tl;dr

We're running an experiment starting Friday, April 19, 2024, to rewrite the page title of some pages in the Web APIs section of the English locale, and to measure its impact on search engine performance. Only the <title> of those pages is affected. No action from contributors or users is necessary.

Details

We have been working closely with an internal SEO expert to identify potential causes of a drop in search engine impressions in April 2023. As it coincides with the Web/API retitle project, and we cannot rule out a causal relationship, we're running an experiment to validate this hypothesis and inform further actions.

We have randomly selected 500 pages out of a list of 4824 Web/API pages in the English locale that were part of the retitle project, and are (partially) reverting the change to their <title> (but not to the <h1>) to see the impact of that change on search engine performance. We will be comparing impressions and clicks of the test group against the control group (the rest of the participating pages).

List of affected pages

https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal/throwIfAborted
https://developer.mozilla.org/en-US/docs/Web/API/AbstractRange/startOffset
https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode/frequencyBinCount
https://developer.mozilla.org/en-US/docs/Web/API/AnimationEvent/pseudoElement
https://developer.mozilla.org/en-US/docs/Web/API/AudioBuffer/length
https://developer.mozilla.org/en-US/docs/Web/API/AudioContext/createMediaStreamTrackSourceA
https://developer.mozilla.org/en-US/docs/Web/API/AudioData/AudioData
https://developer.mozilla.org/en-US/docs/Web/API/AudioDestinationNode/maxChannelCount
https://developer.mozilla.org/en-US/docs/Web/API/AudioEncoder/isConfigSupported_static
https://developer.mozilla.org/en-US/docs/Web/API/AudioListener/upZ
https://developer.mozilla.org/en-US/docs/Web/API/AudioNode/channelCount
https://developer.mozilla.org/en-US/docs/Web/API/AudioParam/cancelScheduledValues
https://developer.mozilla.org/en-US/docs/Web/API/AudioParam/linearRampToValueAtTime
https://developer.mozilla.org/en-US/docs/Web/API/AudioTrack/kind
https://developer.mozilla.org/en-US/docs/Web/API/AuthenticatorResponse/clientDataJSON
https://developer.mozilla.org/en-US/docs/Web/API/BackgroundFetchRegistration/downloadTotal
https://developer.mozilla.org/en-US/docs/Web/API/BackgroundFetchRegistration/id
https://developer.mozilla.org/en-US/docs/Web/API/BackgroundFetchRegistration/recordsAvailable
https://developer.mozilla.org/en-US/docs/Web/API/BackgroundFetchRegistration/uploadTotal
https://developer.mozilla.org/en-US/docs/Web/API/BarProp/visible
https://developer.mozilla.org/en-US/docs/Web/API/BaseAudioContext/createAnalyser
https://developer.mozilla.org/en-US/docs/Web/API/BaseAudioContext/createChannelMerger
https://developer.mozilla.org/en-US/docs/Web/API/BaseAudioContext/createChannelSplitter
https://developer.mozilla.org/en-US/docs/Web/API/BaseAudioContext/createConstantSource
https://developer.mozilla.org/en-US/docs/Web/API/BaseAudioContext/createConvolver
https://developer.mozilla.org/en-US/docs/Web/API/BaseAudioContext/createPeriodicWave
https://developer.mozilla.org/en-US/docs/Web/API/BaseAudioContext/state
https://developer.mozilla.org/en-US/docs/Web/API/BatteryManager/charging
https://developer.mozilla.org/en-US/docs/Web/API/BeforeInstallPromptEvent/userChoice
https://developer.mozilla.org/en-US/docs/Web/API/Blob/stream
https://developer.mozilla.org/en-US/docs/Web/API/Blob/type
https://developer.mozilla.org/en-US/docs/Web/API/Bluetooth/getAvailability
https://developer.mozilla.org/en-US/docs/Web/API/Bluetooth/getDevices
https://developer.mozilla.org/en-US/docs/Web/API/BluetoothRemoteGATTCharacteristic/stopNotifications
https://developer.mozilla.org/en-US/docs/Web/API/BluetoothRemoteGATTCharacteristic/writeValue
https://developer.mozilla.org/en-US/docs/Web/API/BluetoothRemoteGATTDescriptor/writeValue
https://developer.mozilla.org/en-US/docs/Web/API/BroadcastChannel/close
https://developer.mozilla.org/en-US/docs/Web/API/Cache/delete
https://developer.mozilla.org/en-US/docs/Web/API/Cache/match
https://developer.mozilla.org/en-US/docs/Web/API/CacheStorage/keys
https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/clearRect
https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/fontStretch
https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/shadowBlur
https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/shadowColor
https://developer.mozilla.org/en-US/docs/Web/API/ChannelSplitterNode/ChannelSplitterNode
https://developer.mozilla.org/en-US/docs/Web/API/CharacterData/deleteData
https://developer.mozilla.org/en-US/docs/Web/API/console/profile_static
https://developer.mozilla.org/en-US/docs/Web/API/console/time_static
https://developer.mozilla.org/en-US/docs/Web/API/console/timelog_static
https://developer.mozilla.org/en-US/docs/Web/API/ContactAddress/recipient
https://developer.mozilla.org/en-US/docs/Web/API/ContentIndex/add
https://developer.mozilla.org/en-US/docs/Web/API/ConvolverNode/ConvolverNode
https://developer.mozilla.org/en-US/docs/Web/API/CountQueuingStrategy/size
https://developer.mozilla.org/en-US/docs/Web/API/CredentialsContainer/create
https://developer.mozilla.org/en-US/docs/Web/API/CSSCounterStyleRule/negative
https://developer.mozilla.org/en-US/docs/Web/API/CSSFontPaletteValuesRule/basePalette
https://developer.mozilla.org/en-US/docs/Web/API/CSSMathNegate/CSSMathNegate
https://developer.mozilla.org/en-US/docs/Web/API/CSSNamespaceRule/prefix
https://developer.mozilla.org/en-US/docs/Web/API/CSSNumericValue/to
https://developer.mozilla.org/en-US/docs/Web/API/CSSNumericValue/type
https://developer.mozilla.org/en-US/docs/Web/API/CSSPrimitiveValue/getStringValue
https://developer.mozilla.org/en-US/docs/Web/API/CSSPropertyRule/initialvalue
https://developer.mozilla.org/en-US/docs/Web/API/CSSPropertyRule/syntax
https://developer.mozilla.org/en-US/docs/Web/API/CSSRule/parentStyleSheet
https://developer.mozilla.org/en-US/docs/Web/API/CSSRule/type
https://developer.mozilla.org/en-US/docs/Web/API/CSSScopeRule/start
https://developer.mozilla.org/en-US/docs/Web/API/CSSSkewY/ay
https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleDeclaration/getPropertyCSSValue
https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleSheet/removeRule
https://developer.mozilla.org/en-US/docs/Web/API/CSSTransformValue/keys
https://developer.mozilla.org/en-US/docs/Web/API/CSSUnparsedValue/CSSUnparsedValue
https://developer.mozilla.org/en-US/docs/Web/API/CSSUnparsedValue/entries
https://developer.mozilla.org/en-US/docs/Web/API/CSSVariableReferenceValue/variable
https://developer.mozilla.org/en-US/docs/Web/API/CustomElementRegistry/whenDefined
https://developer.mozilla.org/en-US/docs/Web/API/CustomStateSet/has
https://developer.mozilla.org/en-US/docs/Web/API/DedicatedWorkerGlobalScope/name
https://developer.mozilla.org/en-US/docs/Web/API/DedicatedWorkerGlobalScope/postMessage
https://developer.mozilla.org/en-US/docs/Web/API/DeprecationReportBody/lineNumber
https://developer.mozilla.org/en-US/docs/Web/API/DeviceOrientationEvent/DeviceOrientationEvent
https://developer.mozilla.org/en-US/docs/Web/API/Document/anchors
https://developer.mozilla.org/en-US/docs/Web/API/Document/childElementCount
https://developer.mozilla.org/en-US/docs/Web/API/Document/createTreeWalker
https://developer.mozilla.org/en-US/docs/Web/API/Document/documentElement
https://developer.mozilla.org/en-US/docs/Web/API/Document/fullscreenEnabled
https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementById
https://developer.mozilla.org/en-US/docs/Web/API/Document/lastElementChild
https://developer.mozilla.org/en-US/docs/Web/API/Document/lastStyleSheetSet
https://developer.mozilla.org/en-US/docs/Web/API/Document/links
https://developer.mozilla.org/en-US/docs/Web/API/Document/prepend
https://developer.mozilla.org/en-US/docs/Web/API/Document/selectedStyleSheetSet
https://developer.mozilla.org/en-US/docs/Web/API/Document/xmlVersion
https://developer.mozilla.org/en-US/docs/Web/API/DocumentFragment/querySelectorAll
https://developer.mozilla.org/en-US/docs/Web/API/DOMMatrixReadOnly/flipX
https://developer.mozilla.org/en-US/docs/Web/API/DOMMatrixReadOnly/scale
https://developer.mozilla.org/en-US/docs/Web/API/DOMMatrixReadOnly/translate
https://developer.mozilla.org/en-US/docs/Web/API/DOMPointReadOnly/toJSON
https://developer.mozilla.org/en-US/docs/Web/API/DOMPointReadOnly/y
https://developer.mozilla.org/en-US/docs/Web/API/DynamicsCompressorNode/attack
https://developer.mozilla.org/en-US/docs/Web/API/Element/ariaAtomic
https://developer.mozilla.org/en-US/docs/Web/API/Element/ariaBrailleRoleDescription
https://developer.mozilla.org/en-US/docs/Web/API/Element/ariaBusy
https://developer.mozilla.org/en-US/docs/Web/API/Element/ariaPosInSet
https://developer.mozilla.org/en-US/docs/Web/API/Element/clientLeft
https://developer.mozilla.org/en-US/docs/Web/API/Element/clientTop
https://developer.mozilla.org/en-US/docs/Web/API/Element/closest
https://developer.mozilla.org/en-US/docs/Web/API/Element/getElementsByClassName
https://developer.mozilla.org/en-US/docs/Web/API/Element/prepend
https://developer.mozilla.org/en-US/docs/Web/API/Element/tagName
https://developer.mozilla.org/en-US/docs/Web/API/ElementInternals/ariaAtomic
https://developer.mozilla.org/en-US/docs/Web/API/ElementInternals/ariaAutoComplete
https://developer.mozilla.org/en-US/docs/Web/API/ElementInternals/ariaCurrent
https://developer.mozilla.org/en-US/docs/Web/API/ElementInternals/ariaLevel
https://developer.mozilla.org/en-US/docs/Web/API/ElementInternals/ariaLive
https://developer.mozilla.org/en-US/docs/Web/API/ElementInternals/ariaValueMax
https://developer.mozilla.org/en-US/docs/Web/API/ElementInternals/setValidity
https://developer.mozilla.org/en-US/docs/Web/API/Event/srcElement
https://developer.mozilla.org/en-US/docs/Web/API/Event/stopPropagation
https://developer.mozilla.org/en-US/docs/Web/API/EXT_disjoint_timer_query/beginQueryEXT
https://developer.mozilla.org/en-US/docs/Web/API/EXT_disjoint_timer_query/getQueryObjectEXT
https://developer.mozilla.org/en-US/docs/Web/API/ExtendableCookieChangeEvent/ExtendableCookieChangeEvent
https://developer.mozilla.org/en-US/docs/Web/API/ExtendableMessageEvent/lastEventId
https://developer.mozilla.org/en-US/docs/Web/API/Fence/getNestedConfigs
https://developer.mozilla.org/en-US/docs/Web/API/FileReader/FileReader
https://developer.mozilla.org/en-US/docs/Web/API/FileReader/readAsDataURL
https://developer.mozilla.org/en-US/docs/Web/API/FileSystem/name
https://developer.mozilla.org/en-US/docs/Web/API/FileSystemDirectoryEntry/getFile
https://developer.mozilla.org/en-US/docs/Web/API/FileSystemDirectoryHandle/entries
https://developer.mozilla.org/en-US/docs/Web/API/FileSystemEntry/isDirectory
https://developer.mozilla.org/en-US/docs/Web/API/FileSystemFileEntry/createWriter
https://developer.mozilla.org/en-US/docs/Web/API/FileSystemFileHandle/createWritable
https://developer.mozilla.org/en-US/docs/Web/API/FileSystemSyncAccessHandle/truncate
https://developer.mozilla.org/en-US/docs/Web/API/FileSystemWritableFileStream/seek
https://developer.mozilla.org/en-US/docs/Web/API/FormData/FormData
https://developer.mozilla.org/en-US/docs/Web/API/GamepadEvent/gamepad
https://developer.mozilla.org/en-US/docs/Web/API/GamepadPose/orientation
https://developer.mozilla.org/en-US/docs/Web/API/GeolocationCoordinates/altitudeAccuracy
https://developer.mozilla.org/en-US/docs/Web/API/GPU/getPreferredCanvasFormat
https://developer.mozilla.org/en-US/docs/Web/API/GPUAdapter/features
https://developer.mozilla.org/en-US/docs/Web/API/GPUBuffer/unmap
https://developer.mozilla.org/en-US/docs/Web/API/GPUCommandEncoder/clearBuffer
https://developer.mozilla.org/en-US/docs/Web/API/GPUCommandEncoder/copyTextureToTexture
https://developer.mozilla.org/en-US/docs/Web/API/GPUDevice/createSampler
https://developer.mozilla.org/en-US/docs/Web/API/GPUDevice/lost
https://developer.mozilla.org/en-US/docs/Web/API/GPUDevice/popErrorScope
https://developer.mozilla.org/en-US/docs/Web/API/GPUQuerySet/count
https://developer.mozilla.org/en-US/docs/Web/API/GPUQueue/onSubmittedWorkDone
https://developer.mozilla.org/en-US/docs/Web/API/GPURenderBundleEncoder/drawIndirect
https://developer.mozilla.org/en-US/docs/Web/API/GPURenderBundleEncoder/insertDebugMarker
https://developer.mozilla.org/en-US/docs/Web/API/GPURenderBundleEncoder/setPipeline
https://developer.mozilla.org/en-US/docs/Web/API/GPURenderPassEncoder/end
https://developer.mozilla.org/en-US/docs/Web/API/GPURenderPassEncoder/executeBundles
https://developer.mozilla.org/en-US/docs/Web/API/GPURenderPassEncoder/setBindGroup
https://developer.mozilla.org/en-US/docs/Web/API/GPUTexture/height
https://developer.mozilla.org/en-US/docs/Web/API/HIDConnectionEvent/HIDConnectionEvent
https://developer.mozilla.org/en-US/docs/Web/API/HIDDevice/sendReport
https://developer.mozilla.org/en-US/docs/Web/API/HIDInputReportEvent/device
https://developer.mozilla.org/en-US/docs/Web/API/Highlight/priority
https://developer.mozilla.org/en-US/docs/Web/API/History/replaceState
https://developer.mozilla.org/en-US/docs/Web/API/HMDVRDevice/setFieldOfView
https://developer.mozilla.org/en-US/docs/Web/API/HTMLAnchorElement/search
https://developer.mozilla.org/en-US/docs/Web/API/HTMLAnchorElement/username
https://developer.mozilla.org/en-US/docs/Web/API/HTMLAreaElement/hash
https://developer.mozilla.org/en-US/docs/Web/API/HTMLAreaElement/origin
https://developer.mozilla.org/en-US/docs/Web/API/HTMLAreaElement/ping
https://developer.mozilla.org/en-US/docs/Web/API/HTMLAreaElement/relList
https://developer.mozilla.org/en-US/docs/Web/API/HTMLAudioElement/Audio
https://developer.mozilla.org/en-US/docs/Web/API/HTMLButtonElement/disabled
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/blur
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/click
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/inert
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/title
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/togglePopover
https://developer.mozilla.org/en-US/docs/Web/API/HTMLFencedFrameElement/height
https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/encoding
https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/target
https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/decoding
https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/height
https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/Image
https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/vspace
https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/disabled
https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/stepDown
https://developer.mozilla.org/en-US/docs/Web/API/HTMLLabelElement/form
https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/controls
https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/defaultPlaybackRate
https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/networkState
https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/setSinkId
https://developer.mozilla.org/en-US/docs/Web/API/HTMLObjectElement/useMap
https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement/namedItem
https://developer.mozilla.org/en-US/docs/Web/API/HTMLSlotElement/assign
https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableElement/border
https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableElement/cellPadding
https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableElement/frame
https://developer.mozilla.org/en-US/docs/Web/API/HTMLTemplateElement/content
https://developer.mozilla.org/en-US/docs/Web/API/HTMLVideoElement/videoWidth
https://developer.mozilla.org/en-US/docs/Web/API/IDBCursor/continuePrimaryKey
https://developer.mozilla.org/en-US/docs/Web/API/IDBCursor/key
https://developer.mozilla.org/en-US/docs/Web/API/IDBCursor/source
https://developer.mozilla.org/en-US/docs/Web/API/IDBDatabase/name
https://developer.mozilla.org/en-US/docs/Web/API/IDBIndex/openKeyCursor
https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/clear
https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/count
https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/getKey
https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/openKeyCursor
https://developer.mozilla.org/en-US/docs/Web/API/IDBObjectStore/put
https://developer.mozilla.org/en-US/docs/Web/API/IDBTransaction/mode
https://developer.mozilla.org/en-US/docs/Web/API/IDBVersionChangeEvent/IDBVersionChangeEvent
https://developer.mozilla.org/en-US/docs/Web/API/IdentityCredential/isAutoSelected
https://developer.mozilla.org/en-US/docs/Web/API/ImageCapture/getPhotoCapabilities
https://developer.mozilla.org/en-US/docs/Web/API/ImageCapture/getPhotoSettings
https://developer.mozilla.org/en-US/docs/Web/API/ImageData/colorSpace
https://developer.mozilla.org/en-US/docs/Web/API/ImageData/data
https://developer.mozilla.org/en-US/docs/Web/API/ImageData/ImageData
https://developer.mozilla.org/en-US/docs/Web/API/ImageTrack/animated
https://developer.mozilla.org/en-US/docs/Web/API/ImageTrack/frameCount
https://developer.mozilla.org/en-US/docs/Web/API/ImageTrackList/selectedIndex
https://developer.mozilla.org/en-US/docs/Web/API/InputEvent/InputEvent
https://developer.mozilla.org/en-US/docs/Web/API/InterventionReportBody/columnNumber
https://developer.mozilla.org/en-US/docs/Web/API/InterventionReportBody/id
https://developer.mozilla.org/en-US/docs/Web/API/InterventionReportBody/lineNumber
https://developer.mozilla.org/en-US/docs/Web/API/InterventionReportBody/toJSON
https://developer.mozilla.org/en-US/docs/Web/API/KeyframeEffect/setKeyframes
https://developer.mozilla.org/en-US/docs/Web/API/LargestContentfulPaint/id
https://developer.mozilla.org/en-US/docs/Web/API/LaunchQueue/setConsumer
https://developer.mozilla.org/en-US/docs/Web/API/Location/hash
https://developer.mozilla.org/en-US/docs/Web/API/Location/origin
https://developer.mozilla.org/en-US/docs/Web/API/MathMLElement/style
https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo/deviceId
https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo/kind
https://developer.mozilla.org/en-US/docs/Web/API/MediaEncryptedEvent/initData
https://developer.mozilla.org/en-US/docs/Web/API/MediaKeySession/generateRequest
https://developer.mozilla.org/en-US/docs/Web/API/MediaKeyStatusMap/values
https://developer.mozilla.org/en-US/docs/Web/API/MediaQueryList/media
https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/addTrack
https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/getVideoTracks
https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamAudioDestinationNode/stream
https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamEvent/stream
https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack/enabled
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints/autoGainControl
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints/displaySurface
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints/frameRate
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints/sampleSize
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints/volume
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackSettings/logicalSurface
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackSupportedConstraints/channelCount
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackSupportedConstraints/displaySurface
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackSupportedConstraints/volume
https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/start
https://developer.mozilla.org/en-US/docs/Web/API/Metadata/modificationTime
https://developer.mozilla.org/en-US/docs/Web/API/MIDIOutput/clear
https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/screenY
https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/WEBKIT_FORCE_AT_FORCE_MOUSE_DOWN_static
https://developer.mozilla.org/en-US/docs/Web/API/MutationEvent/initMutationEvent
https://developer.mozilla.org/en-US/docs/Web/API/MutationRecord/attributeNamespace
https://developer.mozilla.org/en-US/docs/Web/API/NamedNodeMap/length
https://developer.mozilla.org/en-US/docs/Web/API/NavigateEvent/formData
https://developer.mozilla.org/en-US/docs/Web/API/NavigateEvent/info
https://developer.mozilla.org/en-US/docs/Web/API/NavigateEvent/userInitiated
https://developer.mozilla.org/en-US/docs/Web/API/Navigation/traverseTo
https://developer.mozilla.org/en-US/docs/Web/API/NavigationHistoryEntry/key
https://developer.mozilla.org/en-US/docs/Web/API/NavigationHistoryEntry/sameDocument
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/getGamepads
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/getUserMedia
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/hid
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/keyboard
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/locks
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/presentation
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/productSub
https://developer.mozilla.org/en-US/docs/Web/API/Navigator/vibrate
https://developer.mozilla.org/en-US/docs/Web/API/NavigatorUAData/brands
https://developer.mozilla.org/en-US/docs/Web/API/NavigatorUAData/getHighEntropyValues
https://developer.mozilla.org/en-US/docs/Web/API/NavigatorUAData/toJSON
https://developer.mozilla.org/en-US/docs/Web/API/NDEFRecord/encoding
https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/type
https://developer.mozilla.org/en-US/docs/Web/API/NodeList/entries
https://developer.mozilla.org/en-US/docs/Web/API/NodeList/values
https://developer.mozilla.org/en-US/docs/Web/API/Notification/body
https://developer.mozilla.org/en-US/docs/Web/API/Notification/timestamp
https://developer.mozilla.org/en-US/docs/Web/API/OES_vertex_array_object/deleteVertexArrayOES
https://developer.mozilla.org/en-US/docs/Web/API/OffscreenCanvas/convertToBlob
https://developer.mozilla.org/en-US/docs/Web/API/OffscreenCanvas/width
https://developer.mozilla.org/en-US/docs/Web/API/OrientationSensor/populateMatrix
https://developer.mozilla.org/en-US/docs/Web/API/OverconstrainedError/constraint
https://developer.mozilla.org/en-US/docs/Web/API/OVR_multiview2/framebufferTextureMultiviewOVR
https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/PannerNode
https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/setOrientation
https://developer.mozilla.org/en-US/docs/Web/API/PasswordCredential/name
https://developer.mozilla.org/en-US/docs/Web/API/Path2D/Path2D
https://developer.mozilla.org/en-US/docs/Web/API/PaymentAddress/recipient
https://developer.mozilla.org/en-US/docs/Web/API/PaymentAddress/sortingCode
https://developer.mozilla.org/en-US/docs/Web/API/PaymentRequest/shippingType
https://developer.mozilla.org/en-US/docs/Web/API/PaymentRequestEvent/methodData
https://developer.mozilla.org/en-US/docs/Web/API/PaymentRequestUpdateEvent/PaymentRequestUpdateEvent
https://developer.mozilla.org/en-US/docs/Web/API/PaymentResponse/retry
https://developer.mozilla.org/en-US/docs/Web/API/Performance/getEntriesByName
https://developer.mozilla.org/en-US/docs/Web/API/Performance/mark
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceLongTaskTiming/attribution
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceMeasure/detail
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceNavigation/type
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceNavigationTiming/toJSON
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/PerformanceObserver
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/domainLookupStart
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/redirectEnd
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceServerTiming/name
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceTiming/domainLookupEnd
https://developer.mozilla.org/en-US/docs/Web/API/PerformanceTiming/domComplete
https://developer.mozilla.org/en-US/docs/Web/API/PeriodicSyncEvent/PeriodicSyncEvent
https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/twist
https://developer.mozilla.org/en-US/docs/Web/API/PositionSensorVRDevice/getImmediateState
https://developer.mozilla.org/en-US/docs/Web/API/PresentationConnection/binaryType
https://developer.mozilla.org/en-US/docs/Web/API/PromiseRejectionEvent/PromiseRejectionEvent
https://developer.mozilla.org/en-US/docs/Web/API/PushManager/register
https://developer.mozilla.org/en-US/docs/Web/API/PushSubscriptionOptions/applicationServerKey
https://developer.mozilla.org/en-US/docs/Web/API/PushSubscriptionOptions/userVisibleOnly
https://developer.mozilla.org/en-US/docs/Web/API/RadioNodeList/value
https://developer.mozilla.org/en-US/docs/Web/API/Range/cloneRange
https://developer.mozilla.org/en-US/docs/Web/API/Range/collapsed
https://developer.mozilla.org/en-US/docs/Web/API/Range/createContextualFragment
https://developer.mozilla.org/en-US/docs/Web/API/Range/endOffset
https://developer.mozilla.org/en-US/docs/Web/API/ReadableByteStreamController/close
https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream/ReadableStream
https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamBYOBReader/closed
https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamDefaultController/close
https://developer.mozilla.org/en-US/docs/Web/API/RemotePlayback/watchAvailability
https://developer.mozilla.org/en-US/docs/Web/API/Request/clone
https://developer.mozilla.org/en-US/docs/Web/API/Request/headers
https://developer.mozilla.org/en-US/docs/Web/API/Request/referrer
https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserverSize/inlineSize
https://developer.mozilla.org/en-US/docs/Web/API/Response/bodyUsed
https://developer.mozilla.org/en-US/docs/Web/API/Response/status
https://developer.mozilla.org/en-US/docs/Web/API/RTCCertificateStats/fingerprint
https://developer.mozilla.org/en-US/docs/Web/API/RTCCertificateStats/timestamp
https://developer.mozilla.org/en-US/docs/Web/API/RTCCodecStats/id
https://developer.mozilla.org/en-US/docs/Web/API/RTCDataChannel/bufferedAmountLowThreshold
https://developer.mozilla.org/en-US/docs/Web/API/RTCDtlsTransport/state
https://developer.mozilla.org/en-US/docs/Web/API/RTCDTMFSender/toneBuffer
https://developer.mozilla.org/en-US/docs/Web/API/RTCError/errorDetail
https://developer.mozilla.org/en-US/docs/Web/API/RTCIceCandidate/protocol
https://developer.mozilla.org/en-US/docs/Web/API/RTCIceCandidate/relatedPort
https://developer.mozilla.org/en-US/docs/Web/API/RTCIceCandidate/tcpType
https://developer.mozilla.org/en-US/docs/Web/API/RTCIceCandidatePairStats/writable
https://developer.mozilla.org/en-US/docs/Web/API/RTCIceCandidateStats/candidateType
https://developer.mozilla.org/en-US/docs/Web/API/RTCIceTransport/getLocalCandidates
https://developer.mozilla.org/en-US/docs/Web/API/RTCInboundRtpStreamStats/qpSum
https://developer.mozilla.org/en-US/docs/Web/API/RTCOutboundRtpStreamStats/perDscpPacketsSent
https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/createAnswer
https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/getIdentityAssertion
https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/setRemoteDescription
https://developer.mozilla.org/en-US/docs/Web/API/RTCRemoteOutboundRtpStreamStats/ssrc
https://developer.mozilla.org/en-US/docs/Web/API/RTCRtpScriptTransformer/writable
https://developer.mozilla.org/en-US/docs/Web/API/RTCRtpSender/setStreams
https://developer.mozilla.org/en-US/docs/Web/API/RTCRtpStreamStats/pliCount
https://developer.mozilla.org/en-US/docs/Web/API/RTCRtpStreamStats/qpSum
https://developer.mozilla.org/en-US/docs/Web/API/RTCRtpTransceiver/receiver
https://developer.mozilla.org/en-US/docs/Web/API/RTCSessionDescription/RTCSessionDescription
https://developer.mozilla.org/en-US/docs/Web/API/RTCStatsReport/forEach
https://developer.mozilla.org/en-US/docs/Web/API/RTCStatsReport/get
https://developer.mozilla.org/en-US/docs/Web/API/RTCTrackEvent/track
https://developer.mozilla.org/en-US/docs/Web/API/RTCVideoSourceStats/id
https://developer.mozilla.org/en-US/docs/Web/API/Screen/isExtended
https://developer.mozilla.org/en-US/docs/Web/API/ScreenDetailed/label
https://developer.mozilla.org/en-US/docs/Web/API/ScreenDetailed/left
https://developer.mozilla.org/en-US/docs/Web/API/ScreenOrientation/angle
https://developer.mozilla.org/en-US/docs/Web/API/SecurityPolicyViolationEvent/originalPolicy
https://developer.mozilla.org/en-US/docs/Web/API/SecurityPolicyViolationEvent/referrer
https://developer.mozilla.org/en-US/docs/Web/API/SecurityPolicyViolationEvent/violatedDirective
https://developer.mozilla.org/en-US/docs/Web/API/Selection/setBaseAndExtent
https://developer.mozilla.org/en-US/docs/Web/API/Selection/toString
https://developer.mozilla.org/en-US/docs/Web/API/Selection/type
https://developer.mozilla.org/en-US/docs/Web/API/SerialPort/forget
https://developer.mozilla.org/en-US/docs/Web/API/SerialPort/setSignals
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerContainer/ready
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/active
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/getNotifications
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/navigationPreload
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/paymentManager
https://developer.mozilla.org/en-US/docs/Web/API/ShadowRoot/adoptedStyleSheets
https://developer.mozilla.org/en-US/docs/Web/API/ShadowRoot/pointerLockElement
https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/changeType
https://developer.mozilla.org/en-US/docs/Web/API/SpeechGrammarList/addFromURI
https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognitionResult/isFinal
https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesis/getVoices
https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesisEvent/charIndex
https://developer.mozilla.org/en-US/docs/Web/API/StaticRange/collapsed
https://developer.mozilla.org/en-US/docs/Web/API/Storage/length
https://developer.mozilla.org/en-US/docs/Web/API/StorageEvent/newValue
https://developer.mozilla.org/en-US/docs/Web/API/StorageEvent/storageArea
https://developer.mozilla.org/en-US/docs/Web/API/StylePropertyMap/set
https://developer.mozilla.org/en-US/docs/Web/API/StylePropertyMapReadOnly/keys
https://developer.mozilla.org/en-US/docs/Web/API/StylePropertyMapReadOnly/size
https://developer.mozilla.org/en-US/docs/Web/API/StyleSheet/media
https://developer.mozilla.org/en-US/docs/Web/API/SVGAnimatedEnumeration/baseVal
https://developer.mozilla.org/en-US/docs/Web/API/SVGAnimatedString/baseVal
https://developer.mozilla.org/en-US/docs/Web/API/SVGElement/style
https://developer.mozilla.org/en-US/docs/Web/API/SVGGeometryElement/getTotalLength
https://developer.mozilla.org/en-US/docs/Web/API/SVGMarkerElement/markerWidth
https://developer.mozilla.org/en-US/docs/Web/API/SVGPointList/appendItem
https://developer.mozilla.org/en-US/docs/Web/API/SVGRect/The__X__property
https://developer.mozilla.org/en-US/docs/Web/API/SVGStyleElement/media
https://developer.mozilla.org/en-US/docs/Web/API/TaskController/setPriority
https://developer.mozilla.org/en-US/docs/Web/API/TaskController/TaskController
https://developer.mozilla.org/en-US/docs/Web/API/TaskSignal/any_static
https://developer.mozilla.org/en-US/docs/Web/API/Text/assignedSlot
https://developer.mozilla.org/en-US/docs/Web/API/TextMetrics/fontBoundingBoxAscent
https://developer.mozilla.org/en-US/docs/Web/API/TextMetrics/ideographicBaseline
https://developer.mozilla.org/en-US/docs/Web/API/TextTrack/language
https://developer.mozilla.org/en-US/docs/Web/API/TextTrackCue/id
https://developer.mozilla.org/en-US/docs/Web/API/TextUpdateEvent/text
https://developer.mozilla.org/en-US/docs/Web/API/TextUpdateEvent/TextUpdateEvent
https://developer.mozilla.org/en-US/docs/Web/API/Touch/radiusX
https://developer.mozilla.org/en-US/docs/Web/API/Touch/Touch
https://developer.mozilla.org/en-US/docs/Web/API/TouchEvent/touches
https://developer.mozilla.org/en-US/docs/Web/API/TransformStream/writable
https://developer.mozilla.org/en-US/docs/Web/API/TransitionEvent/TransitionEvent
https://developer.mozilla.org/en-US/docs/Web/API/TrustedTypePolicy/name
https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/detail
https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/sourceCapabilities
https://developer.mozilla.org/en-US/docs/Web/API/URL/hash
https://developer.mozilla.org/en-US/docs/Web/API/URL/origin
https://developer.mozilla.org/en-US/docs/Web/API/URL/toString
https://developer.mozilla.org/en-US/docs/Web/API/URLPattern/password
https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams/append
https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams/delete
https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams/sort
https://developer.mozilla.org/en-US/docs/Web/API/USB/requestDevice
https://developer.mozilla.org/en-US/docs/Web/API/USBDevice/controlTransferIn
https://developer.mozilla.org/en-US/docs/Web/API/USBDevice/opened
https://developer.mozilla.org/en-US/docs/Web/API/USBDevice/selectConfiguration
https://developer.mozilla.org/en-US/docs/Web/API/ValidityState/rangeOverflow
https://developer.mozilla.org/en-US/docs/Web/API/VideoColorSpace/transfer
https://developer.mozilla.org/en-US/docs/Web/API/VideoFrame/allocationSize
https://developer.mozilla.org/en-US/docs/Web/API/ViewTimeline/endOffset
https://developer.mozilla.org/en-US/docs/Web/API/ViewTimeline/ViewTimeline
https://developer.mozilla.org/en-US/docs/Web/API/VRDisplay/submitFrame
https://developer.mozilla.org/en-US/docs/Web/API/VRDisplayEvent/VRDisplayEvent
https://developer.mozilla.org/en-US/docs/Web/API/VREyeParameters/minimumFieldOfView
https://developer.mozilla.org/en-US/docs/Web/API/VREyeParameters/offset
https://developer.mozilla.org/en-US/docs/Web/API/VRFrameData/timestamp
https://developer.mozilla.org/en-US/docs/Web/API/VTTCue/align
https://developer.mozilla.org/en-US/docs/Web/API/WaveShaperNode/curve
https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/beginTransformFeedback
https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/texSubImage3D
https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/transformFeedbackVaryings
https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/uniformMatrix
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/blendFuncSeparate
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/compressedTexSubImage2D
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/createBuffer
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/deleteShader
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/getSupportedExtensions
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/getTexParameter
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/isContextLost
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/isRenderbuffer
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/stencilMaskSeparate
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/texSubImage2D
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/uniform
https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/viewport
https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/binaryType
https://developer.mozilla.org/en-US/docs/Web/API/WebTransportDatagramDuplexStream/incomingMaxAge
https://developer.mozilla.org/en-US/docs/Web/API/WheelEvent/WheelEvent
https://developer.mozilla.org/en-US/docs/Web/API/Window/closed
https://developer.mozilla.org/en-US/docs/Web/API/window/getDefaultComputedStyle
https://developer.mozilla.org/en-US/docs/Web/API/Window/getSelection
https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage
https://developer.mozilla.org/en-US/docs/Web/API/Window/scrollY
https://developer.mozilla.org/en-US/docs/Web/API/Window/speechSynthesis
https://developer.mozilla.org/en-US/docs/Web/API/Window/statusbar
https://developer.mozilla.org/en-US/docs/Web/API/Window/window
https://developer.mozilla.org/en-US/docs/Web/API/WindowControlsOverlay/getTitlebarAreaRect
https://developer.mozilla.org/en-US/docs/Web/API/WorkerNavigator/locks
https://developer.mozilla.org/en-US/docs/Web/API/WorkerNavigator/serial
https://developer.mozilla.org/en-US/docs/Web/API/Worklet/addModule
https://developer.mozilla.org/en-US/docs/Web/API/WritableStream/getWriter
https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultController/signal
https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultWriter/abort
https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultWriter/write
https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/overrideMimeType
https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/send
https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/setRequestHeader
https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/status
https://developer.mozilla.org/en-US/docs/Web/API/XRCylinderLayer/radius
https://developer.mozilla.org/en-US/docs/Web/API/XRDepthInformation/rawValueToMeters
https://developer.mozilla.org/en-US/docs/Web/API/XREquirectLayer/radius
https://developer.mozilla.org/en-US/docs/Web/API/XRInputSourceArray/keys
https://developer.mozilla.org/en-US/docs/Web/API/XRInputSourcesChangeEvent/XRInputSourcesChangeEvent
https://developer.mozilla.org/en-US/docs/Web/API/XRLightEstimate/primaryLightIntensity
https://developer.mozilla.org/en-US/docs/Web/API/XRMediaBinding/createCylinderLayer
https://developer.mozilla.org/en-US/docs/Web/API/XRProjectionLayer/fixedFoveation
https://developer.mozilla.org/en-US/docs/Web/API/XRRay/matrix
https://developer.mozilla.org/en-US/docs/Web/API/XRRigidTransform/position
https://developer.mozilla.org/en-US/docs/Web/API/XRSession/interactionMode
https://developer.mozilla.org/en-US/docs/Web/API/XRSession/requestLightProbe
https://developer.mozilla.org/en-US/docs/Web/API/XRSession/requestReferenceSpace
https://developer.mozilla.org/en-US/docs/Web/API/XRView/eye
https://developer.mozilla.org/en-US/docs/Web/API/XRViewerPose/views
https://developer.mozilla.org/en-US/docs/Web/API/XRViewport/x
https://developer.mozilla.org/en-US/docs/Web/API/XRWebGLBinding/createCylinderLayer
https://developer.mozilla.org/en-US/docs/Web/API/XRWebGLBinding/createEquirectLayer
https://developer.mozilla.org/en-US/docs/Web/API/XRWebGLLayer/fixedFoveation
https://developer.mozilla.org/en-US/docs/Web/API/XRWebGLLayer/XRWebGLLayer
https://developer.mozilla.org/en-US/docs/Web/API/XSLTProcessor/getParameter
https://developer.mozilla.org/en-US/docs/Web/API/XSLTProcessor/XSLTProcessor

Most users won't see a difference, but the window/tab title for the pages in the test group will reflect the rewritten title, and search engine results will eventually show that title as well.

Example

• Page: /en-US/docs/Web/API/Element/clientTop
• Old title: Element.clientTop
• Current title: Element: clientTop property
• Title during experiment: Element.clientTop property

See also

Pull Requests:

• Initial: feat(experiment): rewrite Web/API page titles yari#10926
• Correction: fix(experiment): replace test group for Web/API page titles yari#10955

[SphinxKnight]

Is there any public data? Should the outcome be a validation of the hypothesis, I guess writers/contributors would have heavy work on their plates (mdn/mdn#284 's scale was not trivial) and I hope data will be provided in such a case.

[caugner]

We will share the result of this experiment, but we don't usually publish any raw data.

Please note that we have implemented this experiment in yari, so there is no additional work for contributors.

[caugner]

Conclusion

The experiment has ended on Thursday, May 30, 2024 with a non-significant result. We have not observed any significant difference in search engine impressions or clicks between the test group (500 pages with rewritten <title>) and the control group. This result confirms that the Web/API retitle project is not a cause for the drop in search engine impressions in April 2023.

As of Friday, May 31, 2024, the <title>s of the 500 pages are now again consistent with their page title, e.g. Element: clientTop property for /en-US/docs/Web/API/Element/clientTop.