shlomib@google.com Android only. Records the playback location at the time when the user manually closes the readaloud player (using the X button). Recorded only in Audio Overviews playback. shlomib@google.com Android only. Recorded when the user closes the player while the playback is still loading. Records how long it takes for users to hit X while the playback is still loading. Recorded only for audio overview playback. andresmolina@google.com chrome-readaloud-team@google.com Record user's cumulative duration spent listening to a single playback. Emitted when playback is reset. Max value is 1 hour. Any listening durations longer than 1 hour will be recorded as 1 hour. andresmolina@google.com chrome-readaloud-team@google.com Record user's cumulative duration spent listening to a single playback with the screen locked. Emitted when playback is reset. Max value is 1 hour. Any listening durations longer than 1 hour will be recorded as 1 hour. sanaakbani@google.com andresmolina@google.com chrome-readaloud-team@google.com Records when a user scrubs backwards on the expanded player seekbar. Measures the duration (in milliseconds) between the user starting and stopping a touch on the seekbar. Max value is 1 hour. Any interval longer than 1 hour will be logged as 1 hour. sanaakbani@google.com andresmolina@google.com chrome-readaloud-team@google.com Records when a user scrubs forwards on the expanded player seekbar. Measures the duration (in milliseconds) between the user starting and stopping a touch on the seekbar. Max value is 1 hour. Any interval longer than 1 hour will be logged as 1 hour. andresmolina@google.com chrome-readaloud-team@google.com Android only. Histogram for recording why a user is not eligible for the ReadAloud feature. Emitted when the user profile is available and the user is ineligible. Conditions are checked in ReadAloudFeatures. Don't use data from before M123. andresmolina@google.com chrome-readaloud-team@google.com Android only. Histogram for recording if a user is eligible for ReadAloud. Emitted when the user profile is available. Don't use data from before M123. andresmolina@google.com chrome-readaloud-team@google.com Android only. Records entrypoint from which a request to play an empty URL was executed. Recorded for each empty URL that had a playback requested. andresmolina@google.com chrome-readaloud-team@google.com Histogram for recording if we were able to retrieve dateModified for the requested tab. False value could mean that the page either doesn't specify dateModified or there was an error during retrieval. andresmolina@google.com chrome-readaloud-team@google.com Record if Read Aloud finds a substring match between the user's requested word to seek to and the distilled Read Aloud text. andresmolina@google.com chrome-readaloud-team@google.com Histogram for recording if highlighting is enabled or disabled. Emitted when the user toggles the "Highlighting enabled" setting. andresmolina@google.com chrome-readaloud-team@google.com Histogram for recording if highlighting is enabled or disabled on session startup. andresmolina@google.com chrome-readaloud-team@google.com Histogram for recording if highlighting is supported. Emitted when a playback is successfully created. Warning: This histogram was expired from 2024-12 to 2025-04; data may be missing. andresmolina@google.com chrome-readaloud-team@google.com Histogram for recording if a page readability check is successful or fails. The readability check is run on each page load for Android clients who are eligible for ReadAloud. andresmolina@google.com chrome-readaloud-team@google.com Android only. Histogram for recording if a page is readable or not. Will be recorded only if ReadAloud is enabled and initialization of all ReadAloud-required objects was successful. Emitted when readability check is requested (on page load, on redirect, on selecting a tab), and cached readability results may be retured. This histogram contain both server side readability responses as well as client side optimizations (client will fail fast readability check for some URL types). For server side only readability ratio, check ReadAloud.ServerReadabilityResult. Do not use data from before M123. andresmolina@google.com chrome-readaloud-team@google.com Records if a tab playback creation succeeds or fails. Emitted in the tab playback creation callback. Does not mean playback has started. shlomib@google.com juanmejia@google.com Histogram for recording what playback mode setting a user selects for the ReadAloud playback. Emitted when the ReadAloud playback mode is changed. andresmolina@google.com chrome-readaloud-team@google.com Records cause of a ReadAloud-speficic exception. In case more details are known, ReadAloud.ReadAloudUnsuportedError.{Phase} or ReadAloud.ReadAloudNetError.{Phase} will also be emitted. Recorded during {Phase}. andresmolina@google.com chrome-readaloud-team@google.com Network status codes recorded for each ReadAloudRequest that fails and has this information present. Recorded value is the absolute value of the received net::Error value. Recorded during {Phase}. andresmolina@google.com chrome-readaloud-team@google.com Android only. Records entrypoint from which a request to play a tab was executed without checking for page readability readability first. Recorded for each playback request without prior readability check. andresmolina@google.com chrome-readaloud-team@google.com Records a rejection reason for not being able to trigger or continue read aloud. Recorded during {Phase}. andresmolina@google.com chrome-readaloud-team@google.com Android only. Histogram for recording server side responses if a page is readable or not. Will be recorded only if ReadAloud is enabled, initialization of all ReadAloud-required objects was successful and no previously cached readability results are available for the requested URL. Emitted from a server response callback when requesting readability information. andresmolina@google.com chrome-readaloud-team@google.com Histogram for recording what speed setting a user selects for the ReadAloud playback. Emitted when the ReadAloud speed pref is changed. shlomib@google.com Android only. Records the playback location at the time when the user manually closes the readaloud player (using the X button). Recorded only in standard playback. shlomib@google.com Android only. Recorded when the user closes the player while the playback is still loading. Records how long it takes for users to hit X while the playback is still loading. Recorded only for standard playbacks. andresmolina@google.com chrome-readaloud-team@google.com Android only. Records when a a request to create playback from given entrypoint fails. Emitted in the tab playback creation callback. Does not mean playback has started. andresmolina@google.com chrome-readaloud-team@google.com Android only. Records when a a request to create playback from given entrypoint succeeds. Emitted in the tab playback creation callback. Does not mean playback has started. andresmolina@google.com chrome-readaloud-team@google.com Android only. Records reason for stopping a tab playback. Note that this doesn't include stopping the voice preview playbacks. Warning: This histogram was expired from 2024-12 to 2025-04; data may be missing. andresmolina@google.com chrome-readaloud-team@google.com Android only. Records processing time for a tap to seek feature. Finds a matching substring in the ReadAloud distilled text to seek playback to the word. Records the time taken for both successful and failed attempts to match the substring.