W3 Total Cache 2.8.10

Does W3 Total Cache work with WordPress 6.8.1 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
2Unrecognized messages in the PHP error log
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 528.28 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: insignificant.
The plugin didn't make the site noticeably slower.

Environment
WordPress version6.8.1
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 1,000,000+
WordPress.org page https://wordpress.org/plugins/w3-total-cache/
Badges

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Pages 20

Plugins ‹ Test site — WordPress

Page screenshot: Plugins ‹ Test site — WordPress
URL /wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL /wp-admin/plugins.php?action=activate&plugin=w3-total-cache%2Fw3-total-cache.php&plugin_status=all&paged=1&s&_wpnonce=f396b791aa
Aspect after-activation
HTTP status 200
Load time 0.595 s
Memory usage 4.48 MiB
JS errors None
Resource errors None

Performance

Page screenshot: Performance
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_dashboard
Aspect menu-item
HTTP status 200
Load time 0.705 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Feature Showcase

Page screenshot: Performance  → Feature Showcase
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_feature_showcase
Aspect menu-item
HTTP status 200
Load time 0.323 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → General Settings

Page screenshot: Performance  → General Settings
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_general
Aspect menu-item
HTTP status 200
Load time 0.351 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Page Cache

Page screenshot: Performance  → Page Cache
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_pgcache
Aspect menu-item
HTTP status 200
Load time 0.308 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Minify

Page screenshot: Performance  → Minify
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_minify
Aspect menu-item
HTTP status 200
Load time 0.349 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Database Cache

Page screenshot: Performance  → Database Cache
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_dbcache
Aspect menu-item
HTTP status 200
Load time 0.301 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Object Cache

Page screenshot: Performance  → Object Cache
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_objectcache
Aspect menu-item
HTTP status 200
Load time 0.335 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Browser Cache

Page screenshot: Performance  → Browser Cache
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_browsercache
Aspect menu-item
HTTP status 200
Load time 0.308 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Cache Groups

Page screenshot: Performance  → Cache Groups
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_cachegroups
Aspect menu-item
HTTP status 200
Load time 0.514 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → CDN

Page screenshot: Performance  → CDN
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_cdn
Aspect menu-item
HTTP status 200
Load time 0.315 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Support

Page screenshot: Performance  → Support
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_support
Aspect menu-item
HTTP status 200
Load time 0.292 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Google PageSpeed

Page screenshot: Performance  → Google PageSpeed
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_pagespeed
Aspect menu-item
HTTP status 200
Load time 0.286 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → User Experience

Page screenshot: Performance  → User Experience
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_userexperience
Aspect menu-item
HTTP status 200
Load time 0.287 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Install

Page screenshot: Performance  → Install
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_install
Aspect menu-item
HTTP status 200
Load time 0.334 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Setup Guide

Page screenshot: Performance  → Setup Guide
URL /wp-admin/admin.php?page=w3tc_setup_guide
Aspect menu-item
HTTP status 200
Load time 0.248 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → About

Page screenshot: Performance  → About
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_about
Aspect menu-item
HTTP status 200
Load time 0.289 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Extensions

Page screenshot: Performance  → Extensions
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_extensions
Aspect menu-item
HTTP status 200
Load time 0.332 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Performance → Statistics

Page screenshot: Performance  → Statistics
URL /wp-admin/admin.php?page=w3tc_setup_guide
Requested URL /wp-admin/admin.php?page=w3tc_stats
Aspect menu-item
HTTP status 200
Load time 0.305 s
Memory usage 4.27 MiB
JS errors None
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
URL /
Aspect front-page
HTTP status 200
Load time 0.284 s
Memory usage 3.65 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.428 s0.493 s+0.065 s3.51 MiB4.09 MiB+ 599.78 KiB
/wp-admin/edit.php0.243 s0.221 s-0.022 s3.57 MiB4.18 MiB+ 620.19 KiB
/wp-admin/post-new.php0.957 s1.183 s+0.226 s6.06 MiB6.64 MiB+ 593.45 KiB
/wp-admin/upload.php0.657 s0.621 s-0.036 s3.52 MiB4.05 MiB+ 539 KiB
/wp-admin/options-writing.php0.254 s0.272 s+0.018 s3.5 MiB4.01 MiB+ 521.63 KiB
/wp-admin/media-new.php0.317 s0.328 s+0.011 s3.49 MiB4.01 MiB+ 529.83 KiB
/wp-admin/edit-tags.php?taxonomy=category0.224 s0.234 s+0.010 s3.5 MiB4.03 MiB+ 540.5 KiB
/wp-admin/post-new.php?post_type=page0.674 s0.682 s+0.008 s6.05 MiB6.63 MiB+ 591.93 KiB
/wp-admin/options-discussion.php0.324 s0.465 s+0.141 s3.5 MiB4.01 MiB+ 518.13 KiB
/wp-admin/edit-comments.php0.513 s0.222 s-0.291 s3.52 MiB4.05 MiB+ 537.73 KiB
/0.355 s0.205 s-0.150 s3.44 MiB3.65 MiB+ 218.86 KiB
Average 0.450 s0.448 s-0.002 s3.97 MiB4.49 MiB+ 528.28 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
Language % Lines of code Comment lines Files
PHP90.3%111,39951,717633
JavaScript6.1%7,52798640
CSS3.1%3,8578519
Java0.2%231771
Markdown0.1%10802
INI0.1%84166
SVG0.1%6514
XML0.0%5741
Total 123,328 52,886 706

PHP Code Analysis | More results »

Lines of code 87,921
Total complexity 19,620
Median class complexity 15.0
Median method complexity 2.0
Most complex class wsdl
Most complex function W3TCL\Minify\JSMinPlus::parseTree()
Classes 559
Methods 4,869
Functions 78

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.

Options wp_options 6

PHP Error Log 6 lines

[18-Jun-2025 19:21:31 UTC] W3 Total Cache environment exception: Edit file <strong>/wp-config.php</strong> and add next lines:<textarea style="height: 100px; width: 100%;">/** Enable W3 Total Cache */
define(&#039;WP_CACHE&#039;, true); // Added by W3 Total Cache
</textarea><br />
[18-Jun-2025 19:21:31 UTC] W3 Total Cache environment exception: Edit file <strong>/wp-config.php</strong> and add next lines:<textarea style="height: 100px; width: 100%;">/** Enable W3 Total Cache */
define(&#039;WP_CACHE&#039;, true); // Added by W3 Total Cache
</textarea><br />
See also: All tests for this plugin, How to Hide W3 Total Cache Admin Menus