Recently found this bookmarklet that visualizes anchor tags in a web page (elements with an ID and anchor tags with a name). Unfortunately Chrome doesn’t like it because it loads jQuery. It also contains a base64 image of anchor. Nowadays you don’t need jQuery for simple tasks and there’s probably an emoji that suits your needs. So, there you go, a simpler bookmarklet:
Updated: added an anchor tag around the anchor emoji with the actual bookmark.