An extension that saves your place in the page. Chrome Web Store - Firefox Addons
Designed for reading long articles or highlighting a specific passage.
Click it and it'll make a bookmark that saves where you were!
If someone else has the extension, just share the bookmark with them, it'll work.
Works by saving your scroll position in the fragment identifier (hashcode) of the bookmark URL and scrolling to it.
Help me improve it! If there's anything you think needs to be added, just add an issue. Pull requests are also welcome.
This is the Chrome version. For the Firefox version, see this branch.