Even 10KB is way too much for a simple <a href="http://example.com" onclick="fetch(this.href, {method: 'POST'}).then(r => r.text()).then(t => this.innerText

Even 10KB is way too much for a simple <a href="http://example.com" onclick="fetch(this.href, {method: 'POST'}).then(r => r.text()).then(t => this.innerText = t); return false;">Click me!</a>