404page – your smart custom 404 error page 11.2.2

Does "404page - your smart custom 404 error page" work with WordPress 5.4.2 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: 94.07 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 version5.4.2
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=34f8f1476d
Aspect after-activation
HTTP status 200
Load time 0.355 s
Memory usage 3.71 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 0.273 s
Memory usage 3.65 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 0.318 s
Memory usage 3.35 MiB
JS errors None
Resource errors None


URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.340 s0.258 s-0.082 s3.64 MiB3.76 MiB+ 129.01 KiB
/wp-admin/edit.php0.210 s0.204 s-0.006 s3.67 MiB3.79 MiB+ 129.01 KiB
/wp-admin/post-new.php1.151 s1.470 s+0.319 s5.43 MiB5.55 MiB+ 126.99 KiB
/wp-admin/upload.php0.412 s0.388 s-0.024 s3.5 MiB3.62 MiB+ 127.88 KiB
/wp-admin/options-writing.php0.168 s0.176 s+0.008 s3.58 MiB3.61 MiB+ 34.39 KiB
/wp-admin/media-new.php0.195 s0.190 s-0.005 s3.48 MiB3.61 MiB+ 128.05 KiB
/wp-admin/edit-tags.php?taxonomy=category0.293 s0.156 s-0.137 s3.58 MiB3.65 MiB+ 64.95 KiB
/wp-admin/post-new.php?post_type=page1.079 s0.993 s-0.086 s5.42 MiB5.54 MiB+ 120.17 KiB
/wp-admin/options-discussion.php0.216 s0.210 s-0.006 s3.48 MiB3.61 MiB+ 128.31 KiB
/wp-admin/edit-comments.php0.194 s0.189 s-0.005 s3.59 MiB3.71 MiB+ 127.86 KiB
/0.406 s0.229 s-0.177 s3.43 MiB3.35 MiB- 81.83 KiB
Average 0.424 s0.406 s-0.018 s3.89 MiB3.98 MiB+ 94.07 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