Pet sitters: third-party embeds are doing the damage

A pet sitting site is mostly reassurance: what you cover, which postcodes, your insurance, your licence, your DBS check, and a way to book. Almost none of that is technically demanding, which is why it is so frustrating when the site is slow.

The usual culprits are the things added to look established. A full interactive map for a coverage area you could have written as a list of postcodes. A social feed that pulls in a framework. Badges that each fetch their own script from somewhere else.

Every one of those is a request to a server you do not control, on a page you cannot cache them into. This page is about pricing each one and deciding which ones earn their keep.

A coverage map is often the biggest single item and the least necessary. A written list of the postcodes you actually serve is faster, more precise and better for search than a map somebody has to pan around on a phone. If you want the map, load it behind a click: show a static image and swap in the interactive version only when someone asks for it.

The same trick works for anything heavy. Show a placeholder, fetch the real component on interaction. It is the most effective pattern there is for third-party content, and it costs nothing but a little care.

Retest one change at a time, keep the median of three lab runs, and let field data confirm it weeks later. Write down what each embed cost, so the next time somebody suggests adding a widget the conversation starts from a number rather than a preference.

And test what you cannot see. Book yourself in and confirm the notification email arrives. Mailboxes on your own domain with spam and virus screening come with every plan, but the only proof the message left is having watched it land.