johntlee@chromium.org chrome-analysis-team@google.com Logs when a user action triggers a command in the bookmark manager. Commands can be triggered by keyboard shortcuts, menu items or other buttons in the UI. Revised in M-76 when the "Open (double click/enter)" bucket was split into two separate buckets, one for bookmarks and one for folders. This histogram is of special interest to the chrome-analysis-team@. Do not change its semantics or retire it without talking to them first. johntlee@chromium.org dpapad@chromium.org Records the time taken to load the bookmarks Web UI and render. This is roughly equivalent to 'time to first meaningful paint' for the bookmark manager. wylieb@google.com chrome-collections@google.com Logs whether the bookmark entry is a user bookmark or a partner bookmark when it is added. Only recorded on Android. rhalavati@chromium.org chrome-privacy-core@google.com This histogram records when a bookmark is added sliced on profile type. This was not recorded for Android before M90. Reading list and partner bookmarks aren't reported by it. wylieb@google.com chrome-collections@google.com Recorded when a bookmark bridge backend successfully loads. wylieb@chromium.org chrome-collections@google.com How long it takes to load the given backends in the java bookmark bridge. Time is measured from when the bridge singleton is instantiated to when each loaded observer call comes in. wylieb@google.com chrome-collections@google.com Recorded when the aggregated BookmarkBridge loading state changes. This is recorded when the java bridge is created, and again when all the different bookmark backends complete loading. tluk@chromium.org chrome-cros@google.com Tracks the time between when the user first launches a bookmark from the attached bookmark bar into the current tab to when we receive the first visually non-empty paint. Emitted after the WebContents in the browser has been notified of the non-empty paint. plcoirier@google.com chrome-collections@google.com Records the average size of {EncryptionType} bookmark nodes on disk. Approximated by dividing the total size on disk by the number of non-folder nodes. This value won't be recorded if there is no bookmarks or the total size on disk is zero. mschillaci@google.com eleanorlee@google.com clank-app-team@google.com Records whether the bookmark bar is shown at startup or not. This records true (enabled/shown) when the user has a Desktop Profile pref and is on a compatible device, or has the device-level preference to show the bar. This is an accurate count of the times the bookmark bar is actually visible to the user, not a count of how many users have the setting enabled (which can be different). This does not count users that have the bookmark bar shown due to a forced feature param. Note: This histogram is distinctly different than the "Bookmarks.BookmarkBar.Shown" histogram. This histogram is only tracked on Android devices, and provides an accurate count of the number of users with the Bookmark Bar enabled, taking into account not only the Profile preference, but also the current device capabilities, window size, and device-level preference overrides. mschillaci@google.com eleanorlee@google.com clank-app-team@google.com Records the reason that the bookmark bar is shown/not shown on start-up, which can be because of a Profile pref, device preference, or environment limitation (e.g. screen size). Note: This histogram is only relevant on Android, where the visibility of the histogram is controlled by many factors beyond the Profile preference. Note: This histogram was incorrectly named in histograms.xml until 2025-12-18, although it was recording with the correct name in code since it was added. Data needs to be manually queried with SQL before this date. mschillaci@google.com eleanorlee@google.com clank-app-team@google.com Emitted when users click on an item that is part of the bookmark bar or its anchored pop-up menu. Emits an enum corresponding to the type of click that a user can make (folder vs. url, overflow, all bookmarks). wylieb@google.com evanluo@google.com chrome-collections@google.com Recorded when an action is executed from the context menu. wylieb@google.com evanluo@google.com chrome-collections@google.com Recorded when the bookmarks bar context menu is opened. robertlin@chromium.org chrome-prerendering@google.com Measures the time from navigation start or prerender activation to first contentful paint for bookmark bar. Refer to BookmarkBarMetricsObserver::OnFirstContentfulPaintInPage() for details. robertlin@chromium.org chrome-prerendering@google.com Measures the time from navigation start or prerender activation to first meaningful paint for bookmark bar. Refer to BookmarkBarMetricsObserver::OnFirstMeaningfulPaintInMainFrameDocument() for details. robertlin@chromium.org chrome-prerendering@google.com Measures the time from navigation start or prerender activation to largest contentful paint for bookmark bar. Refer to BookmarkBarMetricsObserver::OnComplete() for details. robertlin@chromium.org chrome-prerendering@google.com Measures the time from the prerendering navigation starts to prerender activation. Refer to BookmarkBarMetricsObserver::DidActivatePrerenderedPage() for details. amelies@google.com chrome-signin-team@google.com Records whether the bookmark bar is shown at startup or not. Note: This histogram should not be used on Android. For Android devices, use the histogram "Bookmarks.BookmarkBar.Android.ShownOnStartUp". This histogram defines "shown" as the current Profile preference on start-up. This does not account for the behavior on Android that can hide the Bookmark Bar on devices with small screens, or small window sizes (even though the Profile pref is enabled), or that Android has device-level preferences for the Bookmark Bar as well. mschillaci@google.com eleanorlee@google.com clank-app-team@google.com Emitted when users show/hide the bookmarks bar using the keyboard shortcut Ctrl+Shift+B. Emits enabled if the bar will be shown after the shortcut and disabled if it will be hidden. mschillaci@google.com eleanorlee@google.com clank-app-team@google.com Emitted when users show/hide the bookmarks bar using the Appearance Settings page toggle. Emits enabled if the bar will be shown after the shortcut and disabled if it will be hidden. mschillaci@google.com clank-app-team@google.com Emitted when users change the bookmarks bar visibility state setting using {Origin}. Emits the new BookmarkBarVisibilityState chosen by the user. mschillaci@google.com clank-app-team@google.com Emitted whenever the bookmarks bar visibility state setting is changed. Emits the BookmarkBarSettingChangeOrigin (e.g. keyboard shortcut, appearance settings, context menu, or app menu) that triggered the change. mschillaci@google.com clank-app-team@google.com Records the BookmarkBarVisibilityState of the bookmarks bar on start-up. This is only recorded for users who have a Desktop device, or users who have explicitly set a device preference on tablet (excluding the default unselected state). mschillaci@google.com clank-app-team@google.com Records the reason for the initial visibility state of the bookmarks bar on start-up when using the tri-state visibility preference. dfried@chromium.org top-chrome-desktop-ui@google.com Records whether a bookmarks bar drag-drop is from a URL (e.g. from the location bar) or from the bookmarks bar itself (which is effectively a move). rsult@google.com chrome-signin-team@google.com Records the storage in which the bookmarks {SubtreeSelection} are stored in. Recorded every 24 hours or on the next startup. Recorded only if there exist at least one item (folder or URL) and account bookmark nodes exists (B4B enabled and active). plcoirier@google.com chrome-collections@google.com Records the result of the load of the {EncryptionType} file of the {BookmarksFileType} bookmarks when loading them from disk at startup. plcoirier@google.com chrome-collections@google.com Records the result of the serialization that occurred when {ImportantFileWriter} saves bookmarks to disk. JSON error can't occur for immediate file writer as they receive a json string to save instead of the bookmark model. wylieb@google.com chrome-collections@google.com Records the number of bookmarks that were selected when a clone operation starts. It doesn't include the children included in folder copies. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. mamir@chromium.org The total number of bookmarks a user has saved, excluding folders. Recorded when a profile is opened - precisely, when bookmarks are loaded into storage from disk. The count includes all bookmarks both in the "Bookmarks Bar" and also under "Other Bookmarks". Opening a guest session (guest profile) also causes an emit to this histogram even though guest sessions don't typically allow bookmarks. (The value emitted is typically zero.) Under certain enterpise configuration, guest sessions can have bookmarks. plcoirier@google.com chrome-collections@google.com Records every time we try to delete the clear text file of {BookmarksFileType} bookmarks file and whether or not the deletion was successful. Absence of the file counts as deletion. dfried@chromium.org top-chrome-desktop-ui@google.com Logs a UI location from which a bookmark is edited, after the user opts to edit or rename a bookmark or folder via a context menu, and immediately before displaying the edit dialog. wylieb@google.com chrome-collections@google.com Records the edit action users take on their bookmarks. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. plcoirier@google.com chrome-collections@google.com Records if the {BookmarksFileType} bookmarks encrypted file content matches the unencrypted file content when the application starts. ianwen@chromium.org How users add a new bookmark. plcoirier@google.com chrome-collections@google.com Records the result of the fallback to the clear text file when loading {BookmarksFileType} bookmarks on profile load. The encrypted file was supposed to be used but was missing. mastiz@chromium.org arthurmilchior@chromium.org Logs whether or not bookmark node IDs were reassigned when loading the {BookmarksFileType}. Recorded on profile load. Note that older versions of the browser recorded this using a histogram without the "2" suffix in the name, before such original histogram expired. ianwen@chromium.org Logs a UI location from which a bookmark is launched. wylieb@google.com chrome-collections@google.com Records when a user interacts with the display options in the mobile bookmarks manager. Warning: this histogram was expired from 2024-01-01 to 2024-10-01; data may be missing. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com Records when the filter options are shown to the user in mobile bookmarks manager. This isn't recorded in any particular interval, so the raw counts should be ignored. There is a gap in data between Jan-Sept 2024. wylieb@google.com chrome-collections@google.com Records when a user interacts with the filter options in the mobile bookmarks manager. Recorded for both on/off events. mschillaci@google.com eleanorlee@google.com clank-app-team@google.com Emitted whenever a user has opened a bookmark via any method within the application. This histogram provides a raw count of the amount of usage bookmarks has on mobile. wylieb@google.com chrome-collections@google.com Records when a user interacts with the sort options in the mobile bookmarks manager. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com Records the time interval between the time the bookmark was added/opened. Recorded when multi-selection is opened from the bookmark manager. Possible that the selection is only 1 bookmark. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com Logs whether the bookmark entry is a user bookmark or a partner bookmark when it is opened. Recorded when multi-selection is opened from the bookmark manager. Possible that the selection is only 1 bookmark. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. roagarwal@chromium.org chrome-incognito@google.com This records the number of times the bookmark manager is opened from regular or Incognito tab. This histogram only records the count from ChromeTabbedActivity where we actually have the Bookmark manager UI. Recorded when the bookmark menu item is clicked in Android. wylieb@google.com chrome-collections@google.com A new version of Bookmarks.OpenBookmarkTimeInterval.{BookmarkType}, to rule out corrupted data introduced by a timestamp bug. wylieb@google.com chrome-collections@google.com Logs whether the bookmark entry is a user bookmark or a partner bookmark when it is opened. wylieb@google.com chrome-collections@google.com This histogram records when a bookmark is added sliced by when it was added. Prior to M111 this histogram was overcounting events, and the data shouldn't be used. wylieb@google.com chrome-collections@google.com This histogram records when a bookmark is added sliced by when it was last used. Prior to M111 this histogram was overcounting events, and the data shouldn't be used. emshack@chromium.org top-chrome-desktop-ui@google.com This histogram records the parent folder added to whenever a bookmark is created or moved. wylieb@google.com chrome-collections@google.com Logs the total number of reading list items shown in the reading list on the Android Bookmarks page when it is opened. wylieb@google.com chrome-collections@google.com Logs the number of read items shown in the reading list on the Android Bookmarks page when it is opened. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com Logs the number of unread items shown in the reading list on the Android Bookmarks page when it is opened. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com Logs a UI location from which one or more bookmarks are removed, after the user requests them to be removed via a menu and immediately before they are actually removed. wylieb@google.com chrome-collections@google.com Records the source when a bookmark is removed. Warning: this histogram was expired from 2024-05-01 to 2024-10-01; data may be missing. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. msalama@chromium.org chrome-signin-team@google.com Records where a bookmark is dropped: on bookmark bar, bookmark menu or a UI that uses the bookmark manager API. Recorded everytime a bookmark is reordered by drag and drop. Reordered in this context means that a bookmark changed its index within the same parent node. {ParentNode} plcoirier@google.com chrome-collections@google.com Size of the encrypted bookmarks file, recorded when the bookmarks model is loaded. This is similar to Bookmarks.Storage.FileSizeAtStartup2, but it is recorded for the encrypted bookmarks file. wylieb@google.com plcoirier@google.com chrome-collections@google.com Size of the bookmarks file, recorded when the bookmarks model is loaded. Opening a guest session (guest profile) also causes an emit to this histogram even though guest sessions don't typically allow bookmarks. (The value emitted is typically zero.) Under certain enterpise configuration, guest sessions can have bookmarks. wylieb@google.com chrome-collections@google.com Time delta between bookmark file saves, recorded when a save occurs. Recorded on the first save as the time since startup. Warning: this histogram was expired from 2024-07-01 to 2024-10-01; data may be missing. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com Duration of loading bookmarks from disk, recorded when the bookmark model is loaded. Opening a guest session (guest profile) also causes an emit to this histogram even though guest sessions don't typically allow bookmarks. (The value emitted is typically zero.) Under certain enterpise configuration, guest sessions can have bookmarks. plcoirier@google.com chrome-collections@google.com Time it takes {ImportantFileWriter} to serialize the bookmark model to a string that will be saved to disk. This time includes encoding JSON object to a string and encryption (if any). It's only reported if serialization is successful. It doesn't include time to write to disk which is reported by ImportantFile.WriteDuration.* wylieb@google.com chrome-collections@google.com Records how long ago (in days) the most recently added folder was added. Only emitted if the user has a folder with at least one child. Days are computed by comparing the current time to the added time for the folder, this value is truncated (std::trunc behavior). Only emitted if there's a valid value which replaces the default SIZE_MAX value. The default SIZE_MAX won't overlap with values coming from real bookmarks. Since bookmarks are synced, this histogram is emitted to regardless of the platform the bookmark originated from. Opening a guest session (guest profile) also causes an emit to this histogram under certain enterpise configurations where guest sessions can have bookmarks. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com Records how long ago (in days) the most recently saved bookmark was saved. Only emitted if the user has a bookmark. Days are computed by comparing the current time to the added time for the bookmark, this value is truncated (std::trunc behavior). Only emitted if there's a valid value which replaces the default SIZE_MAX value. The default SIZE_MAX won't overlap with values coming from real bookmarks. Since bookmarks are synced, this histogram is emitted to regardless of the platform the bookmark originated from. Opening a guest session (guest profile) also causes an emit to this histogram under certain enterpise configurations where guest sessions can have bookmarks. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com Records how long ago (in days) the most recently saved bookmark was used. Only emitted if the user has a bookmark which has been opened. Days are computed by comparing the current time to the used time for the bookmark, this value is truncated (std::trunc behavior). Only emitted if there's a valid value which replaces the default SIZE_MAX value. The default SIZE_MAX won't overlap with values coming from real bookmarks. Since bookmarks are synced, this histogram is emitted to regardless of the platform the bookmark originated from. Opening a guest session (guest profile) also causes an emit to this histogram under certain enterpise configurations where guest sessions can have bookmarks. Warning: this histogram was expired from 2024-07-01 to 2024-10-01; data may be missing. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com Records the average number of days since each bookmark was added. Recorded on profile load. Records zero for profiles with no bookmarks. Opening a guest session (guest profile) also causes an emit to this histogram even though guest sessions don't typically allow bookmarks. (The value emitted is typically zero.) Under certain enterpise configuration, guest sessions can have bookmarks. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. plcoirier@google.com chrome-collections@google.com Records the duration it took to read and decrypt the {EncryptionType} file of {BookmarksFileType} bookmarks. It does not include the time it took to parse the JSON string or deserialize the JSON value. rhalavati@chromium.org chrome-privacy-core@google.com The number of times bookmarks are used in each profile type. Recorded when a bookmark is clicked. yzshen@chromium.org mschillaci@google.com eleanorlee@google.com chrome-collections@google.com Records the total number of top-level bookmarks/items (including folders) in the Bookmark Bar folder. This includes all bookmarks/items, not just those currently visible (i.e. items in the overflow menu are included). If there are non-profile top-level bookmarks/items, they are not included in this count. Recorded on profile load. These are the direct descendants of the permanent folder: Bookmarks Bar. yzshen@chromium.org chrome-collections@google.com Records the total number of user-generated folders. Recorded on profile load. These are descendants of any permanent bookmark folders (Bookmarks Bar, Mobile Bookmarks, Other Bookmarks). yzshen@chromium.org chrome-collections@google.com Records the number of top-level user-generated folders. Recorded on profile load. These are children of any permanent bookmark folders (Bookmarks Bar, Mobile Bookmarks, Other Bookmarks). yzshen@chromium.org chrome-collections@google.com Records the depth within the bookmark folder hierarchy where a URL bookmark is added. This number is the count of user-generated folders which are ancestors of the added bookmark. yzshen@chromium.org chrome-collections@google.com Records the depth within the bookmark folder hierarchy where a URL bookmark is opened. This number is the count of user-generated folders which are ancestors of the opened bookmark. wylieb@google.com chrome-collections@google.com The percentage of bookmarks which have been used expressed as 0-100. Recorded on profile load. wylieb@google.com chrome-collections@google.com The total number of bookmarks that haven't been opened. Recorded on profile load. Warning: this histogram was expired from 2025-03-02 to 2025-07-08; data may be missing. wylieb@google.com chrome-collections@google.com The total number of bookmarks that have been opened. Recorded on profile load. emshack@chromium.org chrome-collections@google.com For each bookmark, the number of days since the bookmark was last used. Recorded on profile load. wylieb@google.com chrome-collections@google.com Tracks the interactions with the price-tracking toggle present when viewing previously saved products. wylieb@google.com chrome-collections@google.com Tracks the interactions with the price-tracking toggle present when initially saving products. emshack@chromium.org chrome-desktop-sea@google.com 1457140 Records the number of bookmarks shown in the side panel. Logged once when the side panel is opened and then again every time a folder is navigated to (either up or down the tree). emshack@chromium.org chrome-desktop-sea@google.com 1457140 Logs when the power bookmarks side panel is shown, as well as when the search bar is defocused as a proxy for performing a search. The CTR can be calculated by computing "Searched" / "Shown". emshack@chromium.org chrome-desktop-sea@google.com 1457140 Records the number of bookmark search or filter results are shown in the side panel. Logged once for each time a search is performed or edited or a filter is applied or removed. emshack@chromium.org chrome-desktop-sea@google.com 1457140 Records the sort type when the side panel is shown or when the sort type changes. emshack@chromium.org chrome-desktop-sea@google.com 1457140 Records the view type when the side panel is shown or when the view type changes. ayman@chromium.org mdjones@chromium.org chrome-shopping@google.com Records how a suggested save location provider was used when creating a new bookmark. This will give us an idea of the overlap of different suggestion providers and whether they are being blocked from previous rejections from the user.