InfoCards

Announcing InfoCards: Rich tooltips that get out of the way

Tooltips that don't obscure the thing they tooltip, and that move smoothly, making a more restful display for information that has lots of detail.

Current Status

InfoCards are now a standard part of my toolkit.

Log

• 18-Feb-2026: Launched

Made with Claude

Claude was able to create this in one session from a prompt and discussion for what I wanted, but it was a very precise prompt with many details. I knew exactly what I wanted because I'd made InfoCards many years previously, by hand. The idea that the up/down movement should be immediate but the update of the contents and side flipping should have a delay came from that previous work. Also the scaling of the movement so that the whole card stays on screen the whole time came from the previous work.

Claude got the timer logic wrong, and didn't cancel a timer when it should, but I did not have to edit the code myself to correct it. Claude tried to change the pin-icon colour to show state, forgetting that it was an emoji and so does not accept colour.

New features that this code has are the ability to move and pin and unpin the card and to resize it. This code is also a bit more modular than my old code, more agnostic about where the tooltips come from.