If you're at all familiar with Microformats, or even just a vCard, then you may well be interested in the bookmarklet I've written. If not - get reading - interesting stuff (I'm also planning to convert my film reviews to hReviews).
It allows the user to load an overlaid window on the current page and download and import vCards or iCal items individually.
More detail on my business web site: Left Logic > micrformat bookmarklet.
MY WORKSHOPMaster Next.js
Everything you need to master universal React with Next.js in a single intense master class. Includes full pass to ffconf, the web developer conf.
By the way, if you don't know what a bookmarklet is here it is in a nutshell: