404page – your smart custom 404 error page 10.1

Does "404page - your smart custom 404 error page" work with WordPress 5.0.3 and PHP 7.0.16? 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: 55.35 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 version5.0.3
PHP version7.0.16
MySQL version5.7.17
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=a1e252bd77
Aspect after-activation
HTTP status 200
Load time 0.293 s
Memory usage 3.21 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 0.226 s
Memory usage 3.29 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 0.317 s
Memory usage 2.93 MiB
JS errors None
Resource errors None


URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.297 s0.286 s-0.011 s3.22 MiB3.32 MiB+ 106.16 KiB
/wp-admin/edit.php0.218 s0.203 s-0.015 s3.25 MiB3.29 MiB+ 40.26 KiB
/wp-admin/post-new.php1.516 s1.447 s-0.069 s4.92 MiB4.96 MiB+ 46.65 KiB
/wp-admin/upload.php0.535 s0.481 s-0.054 s3.15 MiB3.19 MiB+ 39.55 KiB
/wp-admin/options-writing.php0.218 s0.211 s-0.007 s3.14 MiB3.18 MiB+ 39.81 KiB
/wp-admin/media-new.php0.235 s0.255 s+0.020 s3.07 MiB3.17 MiB+ 103.86 KiB
/wp-admin/edit-tags.php?taxonomy=category0.200 s0.218 s+0.018 s3.17 MiB3.21 MiB+ 40.8 KiB
/wp-admin/post-new.php?post_type=page2.851 s1.181 s-1.670 s4.9 MiB4.94 MiB+ 39.39 KiB
/wp-admin/options-discussion.php0.247 s0.312 s+0.065 s3.07 MiB3.17 MiB+ 103.81 KiB
/wp-admin/edit-comments.php0.246 s0.246 s+0.000 s3.18 MiB3.21 MiB+ 39.55 KiB
/0.416 s0.182 s-0.234 s2.93 MiB2.93 MiB+ 9.02 KiB
Average 0.634 s0.457 s-0.178 s3.45 MiB3.51 MiB+ 55.35 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