404page – your smart custom 404 error page 11.2.4

Does "404page - your smart custom 404 error page" work with WordPress 5.5 and PHP 7.2.16? A smoke test was performed on .


No PHP errors, warnings or notices
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Looks good! No problems were detected.

Memory usage: 104.81 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.

WordPress version5.5
PHP version7.2.16
MySQL version8.0.15
PHP memory limit256M
Plugin Info
Last updated
Active installs 100,000+
WordPress.org page https://wordpress.org/plugins/404page/

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Pages 3

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=404page%2F404page.php&plugin_status=all&paged=1&s&_wpnonce=e98c8cd57e
Aspect after-activation
HTTP status 200
Load time 0.271 s
Memory usage 3.97 MiB
JS errors None
Resource errors None

Appearance → 404 Error Page

Page screenshot: Appearance → 404 Error Page
URL /wp-admin/themes.php?page=404pagesettings
Aspect menu-item
HTTP status 200
Load time 0.295 s
Memory usage 3.96 MiB
JS errors None
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
Aspect front-page
HTTP status 200
Load time 0.201 s
Memory usage 3.68 MiB
JS errors None
Resource errors None


URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.459 s0.290 s-0.169 s3.96 MiB4.09 MiB+ 126.2 KiB
/wp-admin/edit.php0.227 s0.212 s-0.015 s3.99 MiB4.11 MiB+ 120.7 KiB
/wp-admin/post-new.php1.435 s1.776 s+0.341 s5.81 MiB5.94 MiB+ 126.68 KiB
/wp-admin/upload.php0.979 s0.399 s-0.580 s3.83 MiB3.94 MiB+ 119.56 KiB
/wp-admin/options-writing.php0.171 s0.165 s-0.006 s3.9 MiB3.93 MiB+ 26.08 KiB
/wp-admin/media-new.php0.194 s0.176 s-0.018 s3.8 MiB3.92 MiB+ 119.73 KiB
/wp-admin/edit-tags.php?taxonomy=category0.183 s0.181 s-0.002 s3.91 MiB3.96 MiB+ 56.64 KiB
/wp-admin/post-new.php?post_type=page1.234 s1.239 s+0.005 s5.8 MiB5.92 MiB+ 119.86 KiB
/wp-admin/options-discussion.php0.286 s0.234 s-0.052 s3.81 MiB3.93 MiB+ 120 KiB
/wp-admin/edit-comments.php0.200 s0.202 s+0.002 s3.91 MiB4.03 MiB+ 119.55 KiB
/0.538 s0.215 s-0.323 s3.58 MiB3.68 MiB+ 97.88 KiB
Average 0.537 s0.463 s-0.074 s4.21 MiB4.31 MiB+ 104.81 KiB


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 1

PHP Error Log

The log file is empty.

See also: All tests for this plugin, How to Hide the "404 Error Page" Admin Menu