Chrome 91 released, here are the changes

Google Chrome 91 is out, bringing a number of new features to the stable branch of the browser. Perhaps its most notable change is the ability to copy a file and paste it into a web page. Also, it fixes 32 security vulnerabilities.

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Clipboard: read-only files support

This feature was planned for Chrome 90, but is now available with release of Chrome 91.


Thanks to this new feature, users to be able to use clipboard keyboard shortcuts such as Ctrl+C, Ctrl+V for a task such as attaching a file to an email rather than only drag and drop. It brings read-only files on the clipboard to renderers using a similar approach to drag-and drop.

Renderers will have access to read file paths from the clipboard, but not write paths to the clipboard. For file paths on the clipboard, renderers will have read-only access. Here's an example of the code:

async function onPaste(e) {
let file = e.clipboardData.files[0];
let contents = await file.text(); 

Chrome earlier supported files via DataTransfer for drag-and-drop, but not for clipboard. This has finally changed.

Additional NAT Slipstream 2.0 protection

Chrome 91 includes now comes with protection from NAT Slipstreaming attacks. The browser block 10080 to provide it. This kind of attacks uses Application Level Gateway (ALG) feature of a router to access LAN ports and apps listening on them.

Other changes

  • Collapsed Tab Groups will be automatically hibernated to release system resources.
  • It is now possible to add PWAs to startup by enabling the flag chrome://flags/#enable-desktop-pwas-run-on-os-login.
  • GravitySensor API
  • JSON modules support.
  • WebAssembly SIMD.
  • WebTransport protocol support
  • DNS over HTTPS support on Linux
  • A refined look of menus in Chrome on Android.
  • WebOTP API support on Android

Download Chrome 91

Existing browser users can go to Menu (Alt+F) > Help > About Google Chrome to make it check for updates and install the latest version. You can also download it manually using the following links.

Web installer: Google Chrome 64-bit
MSI/Enterprise installer: Google Chrome MSI Installers for Windows

Note: The offline installer doesn't support the automatic update feature of Chrome. By installing it this way, you will be forced to always update your browser manually.

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Author: Sergey Tkachenko

Sergey Tkachenko is a software developer who started Winaero back in 2011. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Follow him on Telegram, Twitter, and YouTube.

2 thoughts on “Chrome 91 released, here are the changes”

  1. Sadly, Google Chrome 91 (stable) no longer allows the user to pin selected extension icons to the toolbar, rather you have to go to their puzzle piece icon to get to the desired extension . Is there any way to re-enable extension icons on the Chrome toolbar? Thanks.

    1. Look at this, puzzle remain, but it’s pin function will work:

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