Covering Hidden Until Found

Filed under “Missed First Time Around.” It appeared in the Firefox 139 release notes and caught my attention. Then I discovered that it’s been in Chrome since at least 2022. As I wrote this, it appeared in Safari Technology Preview 125. So there you have it.

There are several good posts and tutorials about hidden=until-found available, so I thought I’d jot down a few key takeaways for future reference.

It makes hidden content “findable”

Short story: Adding hidden=until-found to an HTML element allows any hidden content within to be findable in the browser using in-page search.

You’ll notice, or more accurately not notice, that the content is hidden with that in place:

Post Tags: #accessibility#articles#attributes#browser#chrome#content#firefox#future#html#it#notes#posts#preview#release#release notes#safari#search#technology#time#Tutorials