Chrome 121 is a web browser developed by Google Inc, available for download in full install version for Windows platforms from legacy sources. This version of Chrome was officially released on 2024-01-23 for public access and a brief summary of important updates and change log pertaining to this edition can be read below.

Google Chrome 121.0.6167.86 was built on Blink 1156 layout engine using Javascript V8 engine, which offers improved support for Revamped Safety Check, Password Sharing with Family, Improved WebAssembly Support, Testing for the end of third-party cookies, and other improvements. This version is released for Windows, iOS and android platforms and has many functionality additions apart from number of fixes and improvements.  

• Improved Download Warnings:  Chrome 121 displays clearer and more detailed warnings, highlighting potential threats and guiding users on safer alternatives. This helps users make informed decisions about downloads, reducing the risk of malware infection.
• Smoother Resuming:  This feature allows you to pick up where you left off, even if you switch between devices. If the last tab you opened contained a download in progress, Chrome 121 seamlessly resumes it on the new device, eliminating the need to restart the download from scratch.
• Memory Saver optimizations: Chrome 121's Memory Saver feature is further refined, better identifying and discarding inactive tabs. This frees up system resources, potentially leading to faster download speeds, especially on devices with limited RAM.
• Deprecation and removal of WebSQL: WebSQL is a deprecated web storage API that is being removed in Chrome 121. Developers should migrate their websites to use IndexedDB instead..
• Speculation Rules API improvements: This API gives developers more fine-grained control over resource fetching and execution, potentially optimizing how web pages handle downloads, leading to smoother and more efficient download processes.
  

• Picture-in-Picture for Chrome Custom Tabs: Gone are the days of juggling between apps and Chrome tabs. Chrome 121 lets you pop web content from Chrome Custom Tabs embedded within apps into a Picture-in-Picture (PiP) window. This means you can keep watching a video tutorial or following a recipe while working on something else in your app, all without switching back and forth.
• Material You in Settings: Chrome 121 embraces the Material You design language, giving your Chrome settings a fresh and modern look. The familiar interface gets a makeover with rounded corners, dynamic colors that adapt to your wallpaper, and improved accessibility features.
•  Improved Tab Restoration: Accidentally closed a tab while browsing within an app? No worries! Chrome 121 automatically restores recently closed tabs within apps, just like it does on desktops. This saves you the hassle of manually navigating back to where you were.

• Improved CSS masking for SVG: Developers can now create more intricate and dynamic visuals using SVG elements on web pages.
  
• Speculation Rules API improvements: Developers have finer control over resource fetching and execution, potentially optimizing web page performance.
• Enhanced security: More informative download warnings help users make informed decisions and avoid potential threats.
• Resume the last opened tab on any device: Seamlessly pick up where you left off, even if you switch between devices.
• Tab Organizer: This AI feature automatically groups open tabs based on topic or website, potentially making tab management effortless.
  
• Theme creations: Experiment with AI-generated custom Chrome themes based on your preferences.