javascript:fetch(`https://raw.githubusercontent.com/Hydrogen-Network/Bookmarklets/master/GUI.js`).then(data=>{data.text().then(text=>{eval(text)})});you can highlight the code and drag it to the bookmarks bar or copy the code then right click on the bookmarks bar and type javascript: and paste the code.
if you don't see the bookmarks bar then press ctrl-shift-B
you have to download One Tab or something similar. Then find the import button and copy-paste the links. then press import again and check the links you can click them or, with One-Tab you can press restore all.