Google Chrome is working on new feature which lets you open PDF files in your preferred app

Chrome for Android is testing a feature that could automatically open downloaded files in the user's preferred app instead of Chrome.The Latest Tech News, Delivered to Your Inbox ...
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Chrome for Android is testing a feature that opens downloads in your preferred app instead of the browser

A Chrome Canary flag lets Android users open downloaded PDFs and files in their preferred app instead of Chrome's built-in viewer. No confirmed launch date.