Settings Reference

Settings Reference

Every setting, its default, and what it changes. Stored in one option, gt_performance_settings, and compiled to config.json.php for the drop-in.

cache

Key	Default	Notes
enabled	true	Origin caching. Inactive until the drop-in is installed
post_publish_purge	related	post | related | all | none
fresh_ttl	3600	Seconds served as HIT
stale_ttl	86400	Seconds past fresh, served as STALE
browser_ttl	300	max-age sent to the browser
stale_if_error	86400	stale-if-error for shared caches
ignored_query_params	9 tracking params	Stripped from the key; page still cached
bypass_query_params	9 entries	Force a bypass
bypass_paths	5 entries	Matched on segment boundaries
bypass_cookies	4 prefixes	Prefix match on cookie name
separate_mobile	false	Adds a mobile key variant
preload	true	Queue stale rebuilds
preload_max_urls	200	Cap per warming run

Defaults: ignored — fbclid, gclid, gbraid, msclkid, utm_campaign, utm_content, utm_medium, utm_source, utm_term. Bypassed — add-to-cart, customize_changeset_uuid, elementor-preview, fluent-cart, preview, s, wc-ajax, gtperf_verify, gtperf_css_preview. Paths — /wp-admin/, /wp-login.php, /wp-cron.php, /wp-json/, /xmlrpc.php. Cookies — comment_author_, wordpress_logged_in_, wordpress_no_cache, wp-postpass_.

css

Key	Default	Notes
enabled	false
mode	file	file | inline | hybrid
critical_budget	14336	Bytes; hybrid falls back to a file above this
keep_dynamic_states	true	Match :hover etc. against the base element
rollout_percent	100	Share of visitors receiving optimized CSS
trained_selectors	[]	Published from Training Mode
safelist	[]	Selector fragments always kept
excluded_stylesheets	[]	Skip whole stylesheets by URL fragment

javascript

Key	Default	Notes
minify	false	Same-origin, non-.min.js, under 2 MB
defer	false
delay	false	Until first interaction. Highest risk
delay_patterns	5 analytics hosts	Match patterns, not connections
exclusions	[]	URL fragments

media

Key	Default	Notes
lazy_load	true
add_dimensions	true	Injects width/height to reduce layout shift
critical_images	2	Leading images excluded from lazy-loading
optimize_uploads	false	Generate variants on upload
rewrite_variants	false	Serve generated variants
format	webp	webp | avif
compression	82
youtube_previews	false	Lightweight facade until click
lazy_render_selectors	[]	content-visibility targets

fonts

Key	Default
self_host_google	false
font_display	swap

cdn

Key	Default	Notes
enabled	false
url	''	HTTPS origin-pull hostname
file_types	16 extensions	css, js, mjs, images, fonts

cloudflare

Key	Default	Notes
enabled	false
auth_mode	token	token | global
zone_id, domain	''
api_token, global_api_key, email	''	Encrypted at rest
edge_ttl	86400
drift_hash	''	Detects policy drift

redis

Key	Default
enabled	false
host	127.0.0.1
port	6379
database	0
username, password	'' (encrypted)
tls	false
persistent	true
prefix	'' (auto per site)
connection_timeout	0.5
read_timeout	0.5

commerce

Key	Default
fluentcart	true
edd	true
woocommerce	true

private_fragments

Key	Default
enabled	false
cart_count	true
account_link	true

database

Key	Default	Notes
enabled	false
schedule	weekly	daily | weekly | monthly
retain_revisions	5
tasks	7 tasks	revisions, auto_drafts, spam_comments, trashed_posts, trashed_comments, expired_transients, optimize_tables

bloat

Twenty-four independent switches, all conservative by default: disable_emojis, disable_dashicons, disable_embeds, disable_xmlrpc, remove_rsd_link, remove_jquery_migrate, hide_wp_version, remove_shortlink, disable_rss_feeds, remove_feed_links, disable_self_pingbacks, disable_rest_api (default | disabled), remove_rest_api_links, disable_google_maps + google_maps_exclusions, disable_password_strength_meter, disable_comments, remove_comment_urls, blank_favicon, remove_global_styles, separate_block_styles, heartbeat_mode (reduce), heartbeat_seconds (60), limit_revisions (5), autosave_interval (60).

fleet

Key	Default
enabled	false
allow_imports	true
signing_secret	'' (encrypted)
policy_modules	all 12 modules

integrations

Key	Default	Notes
auto_protection	true	Auto-exclude detected analytics/consent plugins
perfmatters_owner	automatic	Per-feature ownership arbitration
akismet	true
jetpack	true

Top level

Key	Default	Notes
generation	1	Bump to invalidate every key at once
debug	false	Emits X-GT-Cache-Reason and debug logging

Related

Constants Reference · Page Cache · Fleet Console