I got the solution. I used the following script: WordPress Media Manager 3.5 – default link to and altered it to my needs with this modification: (function() { var _AttachmentDisplay = wp.media.view.Settings.AttachmentDisplay; wp.media.view.Settings.AttachmentDisplay = _AttachmentDisplay.extend({ render: function() { _AttachmentDisplay.prototype.render.apply(this, arguments); this.$el.find(‘select.link-to’).val(‘none’); this.model.set(‘link’, ‘none’); this.updateLinkTo(); this.$el.find(‘select.link-to’).parent(‘label’).hide(); this.$el.find(‘select.size option[value=full]’).hide(); this.model.set(‘size’, ‘medium’); this.updateLinkTo(); } }); })();