Microsoft details its work with Google to improve spellcheck in Chrome and Edge, which now use Windows Spellcheck with better support for URLs, acronyms, more
Better support for URLs, acronyms, and more — Google and Microsoft have worked together to improve the spellcheck experience in Chrome and Edge.
Context & Ripple Effects
Since rebuilding Edge on Google's Chromium project in late 2018, Microsoft has been shipping differentiated features on top of the shared engine, like the Vertical Tabs, Smart Copy, and Password Monitor additions covered earlier this year (Vertical Tabs and Smart Copy). This spellcheck work extends that pattern below the rendering layer: Chrome and Edge will both call Windows Spellcheck, an OS-level component, instead of maintaining separate browser dictionaries.
First-order effects
- Users of Chrome and Edge on Windows get improved handling of URLs and acronyms immediately, since both browsers now share Microsoft's OS-level spellchecker rather than their own word lists.
Second-order effects
- Shared spellchecking removes a small but visible difference between the two browsers, pushing differentiation further up the stack toward features like tab management and credential monitoring where Microsoft is actively adding value.
- Other Chromium-based browser makers face a choice between adopting the same Windows Spellcheck API or continuing to fund their own dictionary maintenance for marginal gain.
Third-order effects
- If the pattern holds, browser competition consolidates around shared open-source plumbing plus OS services, with vendors competing on the feature layer above — the direction Microsoft's Chromium bet already pointed.
The trend: Browser rivalry is migrating from engine plumbing to feature-layer differentiation, as Microsoft and Google increasingly share components built on each other's platforms.