> For the complete documentation index, see [llms.txt](https://metuskexteiin.gitbook.io/us/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://metuskexteiin.gitbook.io/us/metamask-r-or-extension-browser-extension.md). # MetaMask®| Extension Browser extension extension stores, and these stores benefit from auto-updates, there are reasons you might want to install a copy of MetaMask manually. For example, you may be using an old, unsupported dapp