@Henner_Zeller , nice and simple tool! Can measurements be deleted or moved? I can’t seem to figure it out.
No, deleting or moving is not implemented yet 
Maybe a hover-over to show dimensions in a separate status bar so that you can pull out measurements where the overlays are getting crowded?
Brilliant!
@Henner_Zeller any plans to implement delete (and/or move)?
Your tool is amazingly useful in its simplicity. Just today I found technical dimensions of a aluminum profile with alot of values missing. Easy to get with the tool.
A few other very handy features would be;
Option to snap lines to 0,45,90… angles.
Save/load the measurements to local filesystem (or copy/paste the measurements to/from the browser)
Save the resulting image with measurements to local filesystem.
Oh, just discovered “[Export transparent overlay]” link. That covers the export feature I guess.
Yeah, I have s similar list of nice-to-have features, @korpx , and some of them are probably addressed next time I need the tool (my brain still recovers from JavaScript cruelty though).
I do accept pull requests …