SingleFile can be installed on:
- Firefox: https://addons.mozilla.org/firefox/addon/single-file
- Chrome: https://chrome.google.com/extensions/detail/mpiodijhokgodhhofbcjdecpffjipkle
- Safari: https://apps.apple.com/us/app/singlefile-for-safari/id6444322545
- Microsoft Edge: https://microsoftedge.microsoft.com/addons/detail/efnbkdcfmcmnhlkaijjjmhjjgladedno
- Firefox for Android Nightly by following this procedure: https://blog.mozilla.org/addons/2020/09/29/expanded-extension-support-in-firefox-for-android-nightly/
You can also download the zip file (https://github.com/gildas-lormeau/SingleFile/archive/master.zip) of the project and install it manually by unzipping it somewhere on your disk and following these instructions:
- Firefox: https://extensionworkshop.com/documentation/develop/temporary-installation-in-firefox/
- Chrome: https://developer.chrome.com/docs/extensions/mv3/getstarted/development-basics/#load-unpacked
- Microsoft Edge: https://docs.microsoft.com/en-us/microsoft-edge/extensions-chromium/getting-started/extension-sideloading
- Safari: https://github.com/gildas-lormeau/SingleFile-Safari-Extension