Add #Tags to your Google Drive Files

Google Drive offers folders (or collections) for organizing your files but doesn’t support labels or tags. A disadvantage with folders is that a file can only belong to a single folder while multiple #tags, as in Gmail, can be assigned to a single file.

There’s a workaround though. You can assign tags to a file in Google Drive by adding them to the description of a file. A Google forum user has written this Google Script that takes the folder name in which a file is found and assigns those names as tags to the file. It works for nested folders too.

 Workaround to fake Tags in Google Drive.
 Writes all the folder names of a file into the file description, so that the file can be found by searching the folder names.

function setDescriptionToFolderNames() {
  var file;
  var filename;
  var folders;
  var filedescription;
  var contents = DocsList.getAllFiles();
  // sort ascending. Oldest first, in case of timeout:
  contents.sort(function(a,b) {return a.getLastUpdated()-b.getLastUpdated()});
  // synchronize folder names of all files (only updates if folders have changed):
  for (var i = 0; i < contents.length; i++) {
    file = contents[i];
    try {
        filename = file.getName();
        //Logger.log("Checking: " +filename +" ("+file.getLastUpdated()+")");
        folders = file.getParents();
        // sort by folder name:
        folders.sort(function(a, b) 
                     { return a.getName().localeCompare(b.getName()); }
        filedescription = "";
        for (var f = 0; f < folders.length; f++) {
          filedescription = filedescription+folders[f].getName()+" ";

        if (filedescription != contents[i].getDescription())
          Logger.log("Updated: " +filename);
     } catch(e){ Logger.log("Error: " +filename+" "+e); }