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Documentation Index

Fetch the complete documentation index at: https://perfgrid.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

The LiteSpeed Cache plugin ships with sensible defaults. You often only need a few changes. Apply the sections below in the WordPress admin where they match your site.

General

In LiteSpeed Cache → General, request a Domain Key if you have not already.

Cache

Open LiteSpeed Cache → Cache.

Cache Mobile

Set Cache Mobile from Off to On only if your site is not responsive or it depends on mobile-detection logic. Otherwise leave it as suits your setup.

Drop Query String

Under Cache, use Drop Query String for tracking parameters. If you installed v3 of the plugin, this is already set. Typical values include:
fbclid
gclid
utm*
_ga
Add or adjust entries to match the query strings you want ignored for caching.

Purge

Open LiteSpeed Cache → Purge.

Auto purge rules for publish/update

Under Auto Purge Rules for Publish/Update, make sure All pages is unchecked unless you intentionally want that behavior.

Serve stale

Set Serve Stale from Off to On.

ESI

Open LiteSpeed Cache → ESI. Set Enable ESI from Off to On only if your site relies on WordPress nonces in a way that benefits from ESI. If you do not need that, you can leave ESI off.

WooCommerce

If you use WooCommerce, open the WooCommerce tab. Under Product Update Interval, choose Purge product and categories only when the stock status changes if you use WooCommerce and your store does not depend on live quantity for display or logic.

Page Optimization

Open LiteSpeed Cache → Page Optimization. Under Optimization Settings, set Remove WordPress Emoji from Off to On unless you need front-end emoji scripts.
Last modified on April 6, 2026