Gutenberg 12.4.0

Does Gutenberg work with WordPress 5.8.3 and PHP 7.4.8? 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: 861.37 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.268 seconds
The average page load time increased by this amount after activating the plugin.

WordPress version5.8.3
PHP version7.4.8
MySQL version8.0.21
PHP memory limit256M
Plugin Info
Last updated
Active installs 300,000+ page

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Pages 4

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=gutenberg%2Fgutenberg.php&plugin_status=all&paged=1&s&_wpnonce=632b494b01
Aspect after-activation
HTTP status 200
Load time 0.605 s
Memory usage 3.74 MiB
JS errors None
Resource errors None


Page screenshot: Gutenberg
URL /wp-admin/post-new.php?gutenberg-demo
Requested URL /wp-admin/admin.php?page=gutenberg
Aspect menu-item
HTTP status 200
Load time 2.574 s
Memory usage 6.89 MiB
JS errors None
Resource errors None

Gutenberg → Experiments

Page screenshot: Gutenberg → Experiments
URL /wp-admin/admin.php?page=gutenberg-experiments
Aspect menu-item
HTTP status 200
Load time 0.311 s
Memory usage 3.6 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 0.319 s
Memory usage 3.77 MiB
JS errors None
Resource errors None


URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.339 s0.411 s+0.072 s3.08 MiB3.75 MiB+ 682.68 KiB
/wp-admin/edit.php0.191 s0.442 s+0.251 s3.11 MiB3.78 MiB+ 683.24 KiB
/wp-admin/post-new.php0.963 s2.162 s+1.199 s5.27 MiB6.87 MiB+ 1.6 MiB
/wp-admin/upload.php0.394 s0.599 s+0.205 s3.03 MiB3.69 MiB+ 678.66 KiB
/wp-admin/options-writing.php0.257 s0.223 s-0.034 s3.02 MiB3.67 MiB+ 664.08 KiB
/wp-admin/media-new.php0.310 s0.305 s-0.005 s3.01 MiB3.67 MiB+ 680.45 KiB
/wp-admin/edit-tags.php?taxonomy=category0.171 s0.255 s+0.084 s3.04 MiB3.7 MiB+ 680.62 KiB
/wp-admin/post-new.php?post_type=page0.911 s1.884 s+0.973 s5.26 MiB6.85 MiB+ 1.6 MiB
/wp-admin/options-discussion.php0.249 s0.404 s+0.155 s3 MiB3.61 MiB+ 616.59 KiB
/wp-admin/edit-comments.php0.230 s0.283 s+0.053 s3.04 MiB3.71 MiB+ 681.2 KiB
/0.313 s0.305 s-0.008 s2.96 MiB3.77 MiB+ 837.41 KiB
Average 0.393 s0.661 s+0.268 s3.44 MiB4.28 MiB+ 861.37 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.

Language % Lines of code Comment lines Files
Total 191,568 63,684 554

PHP Code Analysis | More results »

Lines of code 16,104
Total complexity 3,119
Median class complexity 25.0
Median method complexity 2.0
Most complex class WP_Theme_JSON_Gutenberg
Most complex function gutenberg_render_block_core_navigation()
Classes 25
Methods 259
Functions 423


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

Custom Post Types 3

ID Name
wp_global_stylesGlobal Styles
wp_template_partTemplate Parts
wp_navigationNavigation Menus

PHP Error Log

The log file is empty.

See also: All tests for this plugin, How to Hide Gutenberg Admin Menus