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Microsoft released a new extension for Google Chrome recently called Web Activities. The new official extension integrates Windows timeline functionality in Google Chrome so that the browsing activity is shared across all user devices that support Timeline functionality.

Microsoft introduced Windows Timeline in preview builds of Windows 10 in 2017 and integrated the feature fully in Windows 10 in 2018 (in the Windows 10 April 2018 Update).

Timeline was designed as a way for users to access their activity on devices that support it. Users could access previously opened websites in Microsoft Edge, documents or spreadsheets in Office applications, or information provided by certain apps that support the feature; all of that across different Windows 10 devices at the time.

The feature has been extended to mobile applications in the meantime. The Chrome extension marks another milestone for the feature; Chrome is the first third-party web browser that gets official Timeline support.

An unofficial Timeline extension for Chrome and Firefox is also available.

Why Chrome? It is explained easily. Chrome has the biggest marketshare. Another reason may be that Microsoft plans to migrate the Edge browser to using Chromium as the powering engine instead of Microsoft's own engine. It should be easy to port the extension to the new version of Edge or integrate Chrome extensions support to support all Chrome extensions.