What is chrome-enable-mv2?

Chrome MV2 Enabler is a Windows batch script that patches Google Chrome's chrome.dll file to bring back support for Manifest V2 browser extensions, even on newer Chrome versions like 150 and 151 and above. Google has been phasing out Manifest V2, which is the format used by older versions of popular extensions like the full version of uBlock Origin, in favor of a newer format called Manifest V3. This tool lets you keep installing and using Manifest V2 extensions that Chrome would otherwise block. The script is menu driven and offers several options in one place, with both English and Vietnamese language support built in. The main option patches chrome.dll to unlock Manifest V2 support. A second option downloads the latest release of uBlock Origin's Manifest V2 build directly from GitHub, extracts it, and copies the folder path to your clipboard so you can quickly load it into Chrome. A third option lets you paste a link to any extension on the Chrome Web Store, or type in its ID, and the script will download that extension's package, strip out the header data, and unpack it into a folder you can load directly. A fourth option restores your original chrome.dll file from a backup the script makes automatically before it patches anything. A fifth option switches the script's display language. To actually use an unpacked extension folder that the script produces, you open Chrome's extensions page, turn on developer mode, click load unpacked, and paste in the folder path, which the script has already copied to your clipboard for convenience. The README is upfront that this tool works by modifying a core browser binary file, and while it includes a safety backup step, it asks users to accept responsibility for any risk that comes from patching Chrome this way. It is built for Windows, and the author notes it works on both officially installed Chrome and portable or custom Chromium builds.