Bookmarklet that copies an Internet Archive IIIF manifest uri to the clipboard, if you are looking at a regular Internet Archive item.

IA-IIIF-bookmarklet.js

javascript:(()=>{id=/https:\/\/archive.org\/details\/([^/]*).*/.exec(location.href);if(id){manifest="https://iiif.archive.org/iiif/"+id[1]+"/manifest.json";navigator.clipboard.writeText(manifest);alert("Copied manifest uri: "+manifest);}else{alert("This isn't an archive.org item.");}})();

uncompressed.js

javascript:(() => {
  id = /https:\/\/archive.org\/details\/([^/]*).*/.exec(location.href);
  if (id) {
    manifest = "https://iiif.archive.org/iiif/" + id[1] + "/manifest.json";
    navigator.clipboard.writeText(manifest);
    alert("Copied manifest uri: " + manifest);
  } else {
    alert("This isn't an archive.org item.");
  }
})();