For jTag. Place this is _layouts/tags_json.html

tags_json.html

---
layout: nil
---
{
	"tags_count": [{% for tag in page.json_tags_count %}
		{"name":"{{tag.name}}","count":{{tag.count}}},{% endfor %}
		false],
	"tags": [{% for tag in page.json_tags %}
		"{{tag}}",{% endfor %}
		false]
}