Report - Gutenberg 21.9.0 - PluginTests.com

Does Gutenberg work with WordPress 6.8.3 and PHP 8.1.12? A smoke test was performed on 2025-10-30 10:53:10 UTC.

Summary

Errors

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

Performance

Memory usage: 2.19 MiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.396 seconds
The average page load time increased by this amount after activating the plugin.

Environment

WordPress version	6.8.3
PHP version	8.1.12
MySQL version	10.6.10
PHP memory limit	512M

Plugin Info

Last updated	2025-11-21T12:25:00+00:00
Active installs	300,000+
WordPress.org page	https://wordpress.org/plugins/gutenberg/
Badges	Get badge code

Pages 4

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=be464d3093
Aspect	after-activation
HTTP status	200
Load time	1.538 s
Memory usage	5.81 MiB
JS errors	None
Resource errors	None

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	2.254 s
Memory usage	8.43 MiB
JS errors	None
Resource errors	None

Gutenberg → Experiments

URL	/wp-admin/admin.php?page=gutenberg-experiments
Aspect	menu-item
HTTP status	200
Load time	0.767 s
Memory usage	5.68 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.303 s
Memory usage	5.47 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.603 s	0.966 s	+0.363 s	3.51 MiB	5.7 MiB	+ 2.19 MiB
/wp-admin/edit.php	0.229 s	0.595 s	+0.366 s	3.57 MiB	5.76 MiB	+ 2.19 MiB
/wp-admin/post-new.php	0.847 s	2.023 s	+1.176 s	6.06 MiB	8.36 MiB	+ 2.3 MiB
/wp-admin/upload.php	0.691 s	0.960 s	+0.269 s	3.52 MiB	5.7 MiB	+ 2.18 MiB
/wp-admin/options-writing.php	0.236 s	0.610 s	+0.374 s	3.5 MiB	5.68 MiB	+ 2.18 MiB
/wp-admin/media-new.php	0.281 s	0.620 s	+0.339 s	3.49 MiB	5.68 MiB	+ 2.19 MiB
/wp-admin/edit-tags.php?taxonomy=category	0.202 s	0.871 s	+0.669 s	3.5 MiB	5.7 MiB	+ 2.2 MiB
/wp-admin/post-new.php?post_type=page	1.157 s	1.296 s	+0.139 s	6.05 MiB	8.35 MiB	+ 2.3 MiB
/wp-admin/options-discussion.php	0.371 s	0.972 s	+0.601 s	3.5 MiB	5.68 MiB	+ 2.17 MiB
/wp-admin/edit-comments.php	0.484 s	0.613 s	+0.129 s	3.52 MiB	5.7 MiB	+ 2.17 MiB
/	0.330 s	0.264 s	-0.066 s	3.5 MiB	5.48 MiB	+ 1.98 MiB
Average	0.494 s	0.890 s	+0.396 s	3.98 MiB	6.16 MiB	+ 2.19 MiB

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.

JavaScript

Language		%	Lines of code	Comment lines	Files
	JavaScript	91.8%	331,459	14,951	63
	PHP	5.7%	20,691	12,415	248
	JSON	2.3%	8,484	0	117
	Markdown	0.1%	316	0	3
	CSS	0.1%	250	0	250
Total			361,200	27,366	681

PHP Code Analysis | More results »

Lines of code	20,518
Total complexity	4,687
Median class complexity	11.0
Median method complexity	3.0
Most complex class	WP_Theme_JSON_Gutenberg
Most complex function	gutenberg_get_layout_style()

Classes	38
Methods	345
Functions	502

Additions

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` 2

active_templates
gutenberg_version_migration

Custom Post Types 1

ID	Name
wp_registered_template	Templates

PHP Error Log

The log file is empty.

Gutenberg 21.9.0