W3 Total Cache 2.10.3

Does W3 Total Cache work with WordPress 7.0.2 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: 624.86 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 version7.0.2
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 900,000+
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=efa2df0ea4
Aspect after-activation
HTTP status 200
Load time 1.327 s
Memory usage 5.12 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 0.829 s
Memory usage 5.43 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 0.616 s
Memory usage 4.76 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 0.816 s
Memory usage 4.76 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 0.607 s
Memory usage 4.76 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 0.630 s
Memory usage 4.76 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 0.831 s
Memory usage 4.76 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 0.673 s
Memory usage 4.76 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 0.642 s
Memory usage 4.76 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 0.768 s
Memory usage 4.76 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 0.593 s
Memory usage 4.76 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 0.659 s
Memory usage 4.76 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 0.817 s
Memory usage 4.76 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 0.585 s
Memory usage 4.76 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 0.644 s
Memory usage 4.76 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 0.680 s
Memory usage 4.76 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 0.631 s
Memory usage 4.76 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 0.654 s
Memory usage 4.76 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 0.825 s
Memory usage 4.76 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 0.298 s
Memory usage 4.41 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.743 s0.745 s+0.002 s3.92 MiB4.64 MiB+ 732.5 KiB
/wp-admin/edit.php0.586 s0.584 s-0.002 s3.98 MiB4.62 MiB+ 651.21 KiB
/wp-admin/post-new.php2.449 s2.049 s-0.400 s6.56 MiB7.28 MiB+ 735.55 KiB
/wp-admin/upload.php0.826 s0.800 s-0.026 s3.89 MiB4.56 MiB+ 682.79 KiB
/wp-admin/options-writing.php0.628 s0.656 s+0.028 s3.86 MiB4.43 MiB+ 583.28 KiB
/wp-admin/media-new.php0.631 s1.057 s+0.426 s3.85 MiB4.44 MiB+ 601.89 KiB
/wp-admin/edit-tags.php?taxonomy=category0.579 s0.723 s+0.144 s3.86 MiB4.51 MiB+ 655.85 KiB
/wp-admin/post-new.php?post_type=page1.950 s1.593 s-0.357 s6.55 MiB7.27 MiB+ 739.32 KiB
/wp-admin/options-discussion.php0.821 s0.801 s-0.020 s3.86 MiB4.46 MiB+ 609.46 KiB
/wp-admin/edit-comments.php0.619 s0.616 s-0.003 s3.88 MiB4.56 MiB+ 695.63 KiB
/0.371 s0.258 s-0.113 s4.23 MiB4.41 MiB+ 185.94 KiB
Average 0.928 s0.898 s-0.029 s4.41 MiB5.02 MiB+ 624.86 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
JavaScript
Language % Lines of code Comment lines Files
PHP85.9%107,78053,727625
JavaScript10.5%13,2251,30440
CSS3.2%4,0089319
Java0.2%231771
Markdown0.1%11103
INI0.1%84166
XML0.0%5741
HTML0.0%701
SVG0.0%404
Total 125,507 55,221 700

PHP Code Analysis | More results »

Lines of code 83,949
Total complexity 18,622
Median class complexity 16.0
Median method complexity 2.0
Most complex class PgCache_ContentGrabber
Most complex function W3TCL\Minify\JSMinPlus::parseTree()
Classes 537
Methods 4,743
Functions 73

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

[05-Aug-2026 18:48:41 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 />
[05-Aug-2026 18:48:41 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