Report - LiteSpeed Cache 4.2

Does LiteSpeed Cache work with WordPress 5.8 and PHP 7.4.8? A smoke test was performed on 2021-08-11 14:38:02 UTC.

Summary

Errors

2	PHP notices
	No JavaScript exceptions
	All test pages loaded successfully
	No resource errors

Performance

Memory usage: 791.27 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.044 seconds
The average page load time increased by this amount after activating the plugin.

Environment

WordPress version	5.8
PHP version	7.4.8
MySQL version	8.0.21
PHP memory limit	256M

Plugin Info

Last updated	2025-09-11T17:52:00+00:00
Active installs	7,000,000+
WordPress.org page	https://wordpress.org/plugins/litespeed-cache/
Badges	Get badge code

Pages 48

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL	/wp-admin/plugins.php?action=activate&plugin=litespeed-cache%2Flitespeed-cache.php&plugin_status=all&paged=1&s&_wpnonce=299a4e4df3
Aspect	after-activation
HTTP status	200
Load time	7.103 s
Memory usage	4.21 MiB
JS errors	None
Resource errors	None

Settings → LiteSpeed Cache

URL	/wp-admin/options-general.php?page=litespeed-cache-options
Aspect	menu-item
HTTP status	200
Load time	0.368 s
Memory usage	4.03 MiB
JS errors	None
Resource errors	None

Settings → LiteSpeed Cache → TTL

URL	/wp-admin/options-general.php?page=litespeed-cache-options
Aspect	menu-item-tab
HTTP status	200
Load time	0.308 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

Settings → LiteSpeed Cache → Purge

URL	/wp-admin/options-general.php?page=litespeed-cache-options
Aspect	menu-item-tab
HTTP status	200
Load time	0.257 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

Settings → LiteSpeed Cache → Excludes

URL	/wp-admin/options-general.php?page=litespeed-cache-options
Aspect	menu-item-tab
HTTP status	200
Load time	0.246 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

Settings → LiteSpeed Cache → ESI

URL	/wp-admin/options-general.php?page=litespeed-cache-options
Aspect	menu-item-tab
HTTP status	200
Load time	0.298 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

Settings → LiteSpeed Cache → Object

URL	/wp-admin/options-general.php?page=litespeed-cache-options
Aspect	menu-item-tab
HTTP status	200
Load time	0.244 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

Settings → LiteSpeed Cache → Browser

URL	/wp-admin/options-general.php?page=litespeed-cache-options
Aspect	menu-item-tab
HTTP status	200
Load time	0.279 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

Settings → LiteSpeed Cache → Advanced

URL	/wp-admin/options-general.php?page=litespeed-cache-options
Aspect	menu-item-tab
HTTP status	200
Load time	0.227 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache

URL	/wp-admin/admin.php?page=litespeed
Aspect	menu-item
HTTP status	200
Load time	0.189 s
Memory usage	4.1 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → General

URL	/wp-admin/admin.php?page=litespeed-general
Aspect	menu-item
HTTP status	200
Load time	0.222 s
Memory usage	3.83 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → General → Tuning

URL	/wp-admin/admin.php?page=litespeed-general
Aspect	menu-item-tab
HTTP status	200
Load time	0.180 s
Memory usage	3.82 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Cache

URL	/wp-admin/admin.php?page=litespeed-cache
Aspect	menu-item
HTTP status	200
Load time	0.283 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Cache → TTL

URL	/wp-admin/admin.php?page=litespeed-cache
Aspect	menu-item-tab
HTTP status	200
Load time	0.222 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Cache → Purge

URL	/wp-admin/admin.php?page=litespeed-cache
Aspect	menu-item-tab
HTTP status	200
Load time	0.226 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Cache → Excludes

URL	/wp-admin/admin.php?page=litespeed-cache
Aspect	menu-item-tab
HTTP status	200
Load time	0.239 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Cache → ESI

URL	/wp-admin/admin.php?page=litespeed-cache
Aspect	menu-item-tab
HTTP status	200
Load time	0.296 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Cache → Object

URL	/wp-admin/admin.php?page=litespeed-cache
Aspect	menu-item-tab
HTTP status	200
Load time	0.229 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Cache → Browser

URL	/wp-admin/admin.php?page=litespeed-cache
Aspect	menu-item-tab
HTTP status	200
Load time	0.244 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Cache → Advanced

URL	/wp-admin/admin.php?page=litespeed-cache
Aspect	menu-item-tab
HTTP status	200
Load time	0.230 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → CDN

URL	/wp-admin/admin.php?page=litespeed-cdn
Aspect	menu-item
HTTP status	200
Load time	0.538 s
Memory usage	3.85 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → CDN → Manage

URL	/wp-admin/admin.php?page=litespeed-cdn
Aspect	menu-item-tab
HTTP status	200
Load time	0.237 s
Memory usage	3.84 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Image Optimization

URL	/wp-admin/admin.php?page=litespeed-img_optm
Aspect	menu-item
HTTP status	200
Load time	0.359 s
Memory usage	3.91 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Image Optimization → Image Optimization Settings

URL	/wp-admin/admin.php?page=litespeed-img_optm
Aspect	menu-item-tab
HTTP status	200
Load time	0.263 s
Memory usage	3.86 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Page Optimization

URL	/wp-admin/admin.php?page=litespeed-page_optm
Aspect	menu-item
HTTP status	200
Load time	0.296 s
Memory usage	3.93 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Page Optimization → JS Settings

URL	/wp-admin/admin.php?page=litespeed-page_optm
Aspect	menu-item-tab
HTTP status	200
Load time	0.219 s
Memory usage	3.85 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Page Optimization → HTML Settings

URL	/wp-admin/admin.php?page=litespeed-page_optm
Aspect	menu-item-tab
HTTP status	200
Load time	0.227 s
Memory usage	3.85 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Page Optimization → Media Settings

URL	/wp-admin/admin.php?page=litespeed-page_optm
Aspect	menu-item-tab
HTTP status	200
Load time	0.231 s
Memory usage	3.85 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Page Optimization → Media Excludes

URL	/wp-admin/admin.php?page=litespeed-page_optm
Aspect	menu-item-tab
HTTP status	200
Load time	0.229 s
Memory usage	3.85 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Page Optimization → Localization

URL	/wp-admin/admin.php?page=litespeed-page_optm
Aspect	menu-item-tab
HTTP status	200
Load time	0.293 s
Memory usage	3.85 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Page Optimization → Tuning

URL	/wp-admin/admin.php?page=litespeed-page_optm
Aspect	menu-item-tab
HTTP status	200
Load time	0.220 s
Memory usage	3.85 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Database

URL	/wp-admin/admin.php?page=litespeed-db_optm
Aspect	menu-item
HTTP status	200
Load time	0.251 s
Memory usage	3.85 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Database → DB Optimization Settings

URL	/wp-admin/admin.php?page=litespeed-db_optm
Aspect	menu-item-tab
HTTP status	200
Load time	0.192 s
Memory usage	3.8 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Crawler

URL	/wp-admin/admin.php?page=litespeed-crawler
Aspect	menu-item
HTTP status	200
Load time	0.485 s
Memory usage	3.96 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Crawler → Map

URL	/wp-admin/admin.php?page=litespeed-crawler
Aspect	menu-item-tab
HTTP status	200
Load time	0.255 s
Memory usage	3.84 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Crawler → Blacklist

URL	/wp-admin/admin.php?page=litespeed-crawler
Aspect	menu-item-tab
HTTP status	200
Load time	0.227 s
Memory usage	3.84 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Crawler → General Settings

URL	/wp-admin/admin.php?page=litespeed-crawler
Aspect	menu-item-tab
HTTP status	200
Load time	0.254 s
Memory usage	3.84 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Crawler → Simulation Settings

URL	/wp-admin/admin.php?page=litespeed-crawler
Aspect	menu-item-tab
HTTP status	200
Load time	0.411 s
Memory usage	3.84 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Crawler → Sitemap Settings

URL	/wp-admin/admin.php?page=litespeed-crawler
Aspect	menu-item-tab
HTTP status	200
Load time	0.230 s
Memory usage	3.84 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Toolbox

URL	/wp-admin/admin.php?page=litespeed-toolbox
Aspect	menu-item
HTTP status	200
Load time	0.324 s
Memory usage	3.97 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Toolbox → Import / Export

URL	/wp-admin/admin.php?page=litespeed-toolbox
Aspect	menu-item-tab
HTTP status	200
Load time	0.228 s
Memory usage	3.89 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Toolbox → Edit .htaccess

URL	/wp-admin/admin.php?page=litespeed-toolbox
Aspect	menu-item-tab
HTTP status	200
Load time	0.259 s
Memory usage	3.89 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Toolbox → Heartbeat

URL	/wp-admin/admin.php?page=litespeed-toolbox
Aspect	menu-item-tab
HTTP status	200
Load time	0.236 s
Memory usage	3.89 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Toolbox → Report

URL	/wp-admin/admin.php?page=litespeed-toolbox
Aspect	menu-item-tab
HTTP status	200
Load time	0.261 s
Memory usage	3.89 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Toolbox → Debug Settings

URL	/wp-admin/admin.php?page=litespeed-toolbox
Aspect	menu-item-tab
HTTP status	200
Load time	0.237 s
Memory usage	3.89 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Toolbox → Log View

URL	/wp-admin/admin.php?page=litespeed-toolbox
Aspect	menu-item-tab
HTTP status	200
Load time	0.234 s
Memory usage	3.89 MiB
JS errors	None
Resource errors	None

LiteSpeed Cache → Toolbox → Beta Test

URL	/wp-admin/admin.php?page=litespeed-toolbox
Aspect	menu-item-tab
HTTP status	200
Load time	0.260 s
Memory usage	3.89 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.356 s
Memory usage	3.58 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.311 s	0.413 s	+0.102 s	3.08 MiB	3.87 MiB	+ 805.02 KiB
/wp-admin/edit.php	0.177 s	0.190 s	+0.013 s	3.11 MiB	3.9 MiB	+ 808.08 KiB
/wp-admin/post-new.php	0.862 s	1.107 s	+0.245 s	5.27 MiB	6.15 MiB	+ 910.3 KiB
/wp-admin/upload.php	0.531 s	0.308 s	-0.223 s	3.03 MiB	3.83 MiB	+ 822.04 KiB
/wp-admin/options-writing.php	0.163 s	0.146 s	-0.017 s	3.02 MiB	3.7 MiB	+ 691.52 KiB
/wp-admin/media-new.php	0.256 s	0.212 s	-0.044 s	3.01 MiB	3.76 MiB	+ 773.22 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.179 s	0.308 s	+0.129 s	3.04 MiB	3.81 MiB	+ 789.3 KiB
/wp-admin/post-new.php?post_type=page	0.699 s	0.882 s	+0.183 s	5.26 MiB	6.14 MiB	+ 906.2 KiB
/wp-admin/options-discussion.php	0.234 s	0.354 s	+0.120 s	3 MiB	3.71 MiB	+ 724.34 KiB
/wp-admin/edit-comments.php	0.202 s	0.227 s	+0.025 s	3.04 MiB	3.81 MiB	+ 788.1 KiB
/	0.286 s	0.237 s	-0.049 s	2.91 MiB	3.58 MiB	+ 685.82 KiB
Average	0.355 s	0.399 s	+0.044 s	3.43 MiB	4.21 MiB	+ 791.27 KiB

Code Statistics

Note: Third-party libraries and minified JS/CSS files are excluded from these statistics where possible, so the numbers you see here may be lower than those reported by other tools.

PHP

CSS

Language		%	Lines of code	Comment lines	Files
	PHP	80.5%	23,420	8,946	130
	CSS	9.6%	2,801	119	2
	SVG	4.3%	1,253	29	30
	JavaScript	4.1%	1,180	121	10
	INI	1.3%	384	190	2
	SQL	0.2%	57	0	7
Total			29,095	9,405	181

PHP Code Analysis | More results »

Lines of code	18,362
Total complexity	4,483
Median class complexity	53.5
Median method complexity	3.0
Most complex class	LiteSpeed\Optimize
Most complex function	LiteSpeed\Optimize::_optimize()

Classes	60
Methods	915
Functions	28

Additions

Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.

Database Tables 2

wp_litespeed_url
wp_litespeed_url_file

Options `wp_options` 189

litespeed.cloud._summary
litespeed.conf._version
litespeed.conf.api_key
litespeed.conf.auto_upgrade
litespeed.conf.cache
litespeed.conf.cache-browser
litespeed.conf.cache-commenter
litespeed.conf.cache-drop_qs
litespeed.conf.cache-exc
litespeed.conf.cache-exc_cat
litespeed.conf.cache-exc_cookies
litespeed.conf.cache-exc_qs
litespeed.conf.cache-exc_roles
litespeed.conf.cache-exc_tag
litespeed.conf.cache-exc_useragents
litespeed.conf.cache-favicon
litespeed.conf.cache-force_pub_uri
litespeed.conf.cache-force_uri
litespeed.conf.cache-login_cookie
litespeed.conf.cache-mobile
litespeed.conf.cache-mobile_rules
litespeed.conf.cache-page_login
litespeed.conf.cache-priv
litespeed.conf.cache-priv_uri
litespeed.conf.cache-resources
litespeed.conf.cache-rest
litespeed.conf.cache-ttl_browser
litespeed.conf.cache-ttl_feed
litespeed.conf.cache-ttl_frontpage
litespeed.conf.cache-ttl_priv
litespeed.conf.cache-ttl_pub
litespeed.conf.cache-ttl_rest
litespeed.conf.cache-ttl_status
litespeed.conf.cache-vary_group
litespeed.conf.cdn
litespeed.conf.cdn-attr
litespeed.conf.cdn-cloudflare
litespeed.conf.cdn-cloudflare_email
litespeed.conf.cdn-cloudflare_key
litespeed.conf.cdn-cloudflare_name
litespeed.conf.cdn-cloudflare_zone
litespeed.conf.cdn-exc
litespeed.conf.cdn-mapping
litespeed.conf.cdn-ori
litespeed.conf.cdn-ori_dir
litespeed.conf.cdn-quic
litespeed.conf.crawler
litespeed.conf.crawler-cookies
litespeed.conf.crawler-crawl_interval
litespeed.conf.crawler-drop_domain
litespeed.conf.crawler-load_limit
litespeed.conf.crawler-map_timeout
litespeed.conf.crawler-roles
litespeed.conf.crawler-run_duration
litespeed.conf.crawler-run_interval
litespeed.conf.crawler-sitemap
litespeed.conf.crawler-threads
litespeed.conf.crawler-timeout
litespeed.conf.crawler-usleep
litespeed.conf.db_optm-revisions_age
litespeed.conf.db_optm-revisions_max
litespeed.conf.debug
litespeed.conf.debug-collaps_qs
litespeed.conf.debug-cookie
litespeed.conf.debug-disable_all
litespeed.conf.debug-exc
litespeed.conf.debug-filesize
litespeed.conf.debug-inc
litespeed.conf.debug-ips
litespeed.conf.debug-level
litespeed.conf.discuss-avatar_cache
litespeed.conf.discuss-avatar_cache_ttl
litespeed.conf.discuss-avatar_cron
litespeed.conf.esi
litespeed.conf.esi-cache_admbar
litespeed.conf.esi-cache_commform
litespeed.conf.esi-nonce
litespeed.conf.guest
litespeed.conf.guest_ips
litespeed.conf.guest_optm
litespeed.conf.guest_uas
litespeed.conf.hash
litespeed.conf.img_optm-auto
litespeed.conf.img_optm-cron
litespeed.conf.img_optm-exif
litespeed.conf.img_optm-jpg_quality
litespeed.conf.img_optm-lossless
litespeed.conf.img_optm-ori
litespeed.conf.img_optm-rm_bkup
litespeed.conf.img_optm-webp
litespeed.conf.img_optm-webp_attr
litespeed.conf.img_optm-webp_replace
litespeed.conf.img_optm-webp_replace_srcset
litespeed.conf.media-add_missing_sizes
litespeed.conf.media-iframe_lazy
litespeed.conf.media-iframe_lazy_cls_exc
litespeed.conf.media-iframe_lazy_parent_cls_exc
litespeed.conf.media-lazy
litespeed.conf.media-lazy_cls_exc
litespeed.conf.media-lazy_exc
litespeed.conf.media-lazy_parent_cls_exc
litespeed.conf.media-lazy_placeholder
litespeed.conf.media-lazy_uri_exc
litespeed.conf.media-lazyjs_inline
litespeed.conf.media-lqip
litespeed.conf.media-lqip_exc
litespeed.conf.media-lqip_min_h
litespeed.conf.media-lqip_min_w
litespeed.conf.media-lqip_qual
litespeed.conf.media-placeholder_resp
litespeed.conf.media-placeholder_resp_async
litespeed.conf.media-placeholder_resp_color
litespeed.conf.media-placeholder_resp_svg
litespeed.conf.misc-heartbeat_back
litespeed.conf.misc-heartbeat_back_ttl
litespeed.conf.misc-heartbeat_editor
litespeed.conf.misc-heartbeat_editor_ttl
litespeed.conf.misc-heartbeat_front
litespeed.conf.misc-heartbeat_front_ttl
litespeed.conf.misc-htaccess_back
litespeed.conf.misc-htaccess_front
litespeed.conf.news
litespeed.conf.object
litespeed.conf.object-admin
litespeed.conf.object-db_id
litespeed.conf.object-global_groups
litespeed.conf.object-host
litespeed.conf.object-kind
litespeed.conf.object-life
litespeed.conf.object-non_persistent_groups
litespeed.conf.object-persistent
litespeed.conf.object-port
litespeed.conf.object-pswd
litespeed.conf.object-transients
litespeed.conf.object-user
litespeed.conf.optm-ccss_con
litespeed.conf.optm-ccss_per_url
litespeed.conf.optm-ccss_sep_posttype
litespeed.conf.optm-ccss_sep_uri
litespeed.conf.optm-css_async
litespeed.conf.optm-css_async_inline
litespeed.conf.optm-css_comb
litespeed.conf.optm-css_comb_ext_inl
litespeed.conf.optm-css_exc
litespeed.conf.optm-css_font_display
litespeed.conf.optm-css_http2
litespeed.conf.optm-css_min
litespeed.conf.optm-dns_prefetch
litespeed.conf.optm-dns_prefetch_ctrl
litespeed.conf.optm-emoji_rm
litespeed.conf.optm-exc
litespeed.conf.optm-exc_roles
litespeed.conf.optm-ggfonts_async
litespeed.conf.optm-ggfonts_rm
litespeed.conf.optm-gm_js_exc
litespeed.conf.optm-guest_only
litespeed.conf.optm-html_lazy
litespeed.conf.optm-html_min
litespeed.conf.optm-js_comb
litespeed.conf.optm-js_comb_ext_inl
litespeed.conf.optm-js_defer
litespeed.conf.optm-js_defer_exc
litespeed.conf.optm-js_exc
litespeed.conf.optm-js_http2
litespeed.conf.optm-js_min
litespeed.conf.optm-noscript_rm
litespeed.conf.optm-qs_rm
litespeed.conf.optm-ucss
litespeed.conf.optm-ucss_whitelist
litespeed.conf.purge-hook_all
litespeed.conf.purge-post_a
litespeed.conf.purge-post_all
litespeed.conf.purge-post_d
litespeed.conf.purge-post_f
litespeed.conf.purge-post_h
litespeed.conf.purge-post_m
litespeed.conf.purge-post_p
litespeed.conf.purge-post_pt
litespeed.conf.purge-post_pwrp
litespeed.conf.purge-post_t
litespeed.conf.purge-post_y
litespeed.conf.purge-stale
litespeed.conf.purge-timed_urls
litespeed.conf.purge-timed_urls_time
litespeed.conf.purge-upgrade
litespeed.conf.server_ip
litespeed.conf.util-instant_click
litespeed.conf.util-no_https_vary
litespeed.gui._summary

PHP Error Log 2 lines

[11-Aug-2021 14:38:46 UTC] PHP Notice:  Undefined index: usage.img_optm in /wp-content/plugins/litespeed-cache/src/cloud.cls.php on line 241
[11-Aug-2021 14:38:47 UTC] PHP Notice:  Undefined index: usage.img_optm in /wp-content/plugins/litespeed-cache/src/cloud.cls.php on line 241

LiteSpeed Cache 4.2