Gutenberg 12.3.1

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: 858.8 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.212 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=0c63725b3e
Aspect after-activation
HTTP status 200
Load time 0.470 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 2.021 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 0.262 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 0.249 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.php0.287 s0.347 s+0.060 s3.08 MiB3.75 MiB+ 680.11 KiB
/wp-admin/edit.php0.147 s0.390 s+0.243 s3.11 MiB3.78 MiB+ 680.67 KiB
/wp-admin/post-new.php0.804 s1.740 s+0.936 s5.27 MiB6.86 MiB+ 1.6 MiB
/wp-admin/upload.php0.329 s0.463 s+0.134 s3.03 MiB3.69 MiB+ 676.09 KiB
/wp-admin/options-writing.php0.204 s0.175 s-0.029 s3.02 MiB3.67 MiB+ 661.51 KiB
/wp-admin/media-new.php0.275 s0.251 s-0.024 s3.01 MiB3.67 MiB+ 677.88 KiB
/wp-admin/edit-tags.php?taxonomy=category0.243 s0.211 s-0.032 s3.04 MiB3.7 MiB+ 678.05 KiB
/wp-admin/post-new.php?post_type=page0.739 s1.564 s+0.825 s5.26 MiB6.85 MiB+ 1.59 MiB
/wp-admin/options-discussion.php0.178 s0.322 s+0.144 s3 MiB3.6 MiB+ 614.02 KiB
/wp-admin/edit-comments.php0.190 s0.236 s+0.046 s3.04 MiB3.71 MiB+ 678.63 KiB
/0.247 s0.275 s+0.028 s2.96 MiB3.77 MiB+ 834.91 KiB
Average 0.331 s0.543 s+0.212 s3.44 MiB4.28 MiB+ 858.8 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 191,387 63,843 556

PHP Code Analysis | More results »

Lines of code 16,085
Total complexity 3,115
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