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wp-content/plugins/zephyr/zephyr.php

Zephyr

Preload what the next page needs, and stop preloading what it does not.

== Description ==

Preload is the most misused tag on the web. Six plugins each preload their own stylesheet, the browser fetches all of them at highest priority, and the page gets slower. Zephyr audits what is being preloaded, reports what is unused within the first second, and lets you remove it.

It adds the hints that help: preconnect for domains actually used in the critical path, and preload for the one font file that causes the layout shift.

Every recommendation comes with the measurement behind it, taken from real navigation timing rather than a rule of thumb.

== Screenshots ==

Numbered the way they ship in /assets/. Click any one to see it full width.

== Installation ==

  • Install and activate the plugin.
  • Collect for a day under real traffic.
  • Apply the recommendations you agree with under Tools → Hints.

It changes nothing until you apply something. The default state is observation.

== Frequently asked questions ==

Does it collect visitor data?

Navigation timing, aggregated, with no identifier. It cannot be tied to a person.

Will it fight my performance plugin?

It reports what your performance plugin is doing, which is usually more useful than fighting it.

== Changelog ==

= 1.5.1 =

  • Fixed: unused-preload detection counted resources used after one second as used, which hid the worst offenders.

= 1.5.0 =

  • Recommendations carry the measurement that produced them.