Now the folder you want to ignore is an empty folder in both your computer and the server. Just create a new empty folder, using the exact same name and location as the one just removed. But to use Selective Sync in the next step, we need a folder to uncheck. This will trigger Dropbox syncing and that folder will be removed from the server. In your computer, find the folder you want to ignore and move it to another location outside your Dropbox folder (we will move it back in step 3). We want the opposite, so let's trick Dropbox to do it. You can't use the Selective Sync feature alone to achieve this, because when you uncheck a folder, it is removed from your drive and is left untouched in the server. Now the local folders will grow, but their server version will always be empty. Then we instruct Dropbox to stop syncing those folders, ignoring any local changes made to them. Cache folders, for example iTunes/Album Artwork/Cache/įirst we must empty those folders in the Dropbox server to regain the precious quota space they're spending.The working folder with raw images to be edited.If you use Dropbox to store all your working projects and personal media, you'll save space and bandwidth if you ignore (no syncing, no removing) the local folders that contain temporary data.