update 2025:
Used this in the past for a couple of years, but moved on to something better. With Raindrop.io (actually a bookmark manager) I can also highlight any page and the hightlights are saved across devices and browsers.

Additional benefits:
* Highlights can even have a note attached to them.
* You can see al your highlights / bookmarks in a list and quickly preview the corresponding site.
* Raindrop also uses fuzzy matching to make sure that tracking info in url's doesn't mess up the sync of your highlights.

For anybody still using this: I think it's time to move on! 🙂

To the developer: thanks for providing us with this tool, it has been useful to me in the past.

update:
when I refresh a page, I lose my highlights...
@Marius, any idea what could trigger this?


original post:
Great tool, nice and simple.
Would be even better if it could sync to other devices...
Now if I open a bookmarked session on my other laptop, the highlights cannot be seen.

Other that that: fabulous!