That’s in quotes, because this is seemingly a self-HTML injection with little to no security impact, but it does allow for you to change your reMarkable’s sleep screen in a different way. Maybe it’s a feature and not a bug?

Either way, one of the first things I did when I recently received a Paper Pro is to attempt to change the sleep screen. It looks like you need to get into dev mode to do so, which isn’t hard, but if you’re not technical, it may be beyond your skill level or interest to do so.

Hence, when I saw that I can insert my own personal details on the sleep screen, the first thing I though about was if it processes any sort of HTML tags or Markdown or something along those lines.

As found in settings > security, the Personal Information section gives us two fields to populate

Obviously, it’ll take some effort to type in a full HTML page manually in those settings. In dev mode, I tried to find where this is set, so I can programmatically set these values. If you aren’t technically inclined, maybe there is a way to paste into these fields, and then you won’t need to enabled dev mode.

The file we need to edit is located at /data/xochitl.conf. I’ve written a python script to automate this a bit. You can find it here.

We are very limited on the tags that work in this environment. Try them for yourself to find out! Here is an image tag in action.