Gutenberg 22.1.2

Does Gutenberg work with WordPress 6.9 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
4PHP deprecation warnings
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 2.2 MiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.375 seconds
The average page load time increased by this amount after activating the plugin.

Environment
WordPress version6.9
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 300,000+
WordPress.org page https://wordpress.org/plugins/gutenberg/
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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=94ea92b03f
Aspect after-activation
HTTP status 200
Load time 1.596 s
Memory usage 6.03 MiB
JS errors None
Resource errors None

Gutenberg

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 2.330 s
Memory usage 8.69 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 0.827 s
Memory usage 5.9 MiB
JS errors None
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
URL /
Aspect front-page
HTTP status 200
Load time 0.622 s
Memory usage 6.19 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.446 s0.640 s+0.194 s3.78 MiB5.92 MiB+ 2.14 MiB
/wp-admin/edit.php0.368 s0.592 s+0.224 s3.78 MiB5.98 MiB+ 2.2 MiB
/wp-admin/post-new.php0.883 s2.246 s+1.363 s6.31 MiB8.61 MiB+ 2.31 MiB
/wp-admin/upload.php0.446 s0.732 s+0.286 s3.74 MiB5.92 MiB+ 2.19 MiB
/wp-admin/options-writing.php0.363 s0.534 s+0.171 s3.71 MiB5.9 MiB+ 2.19 MiB
/wp-admin/media-new.php0.576 s0.967 s+0.391 s3.7 MiB5.9 MiB+ 2.2 MiB
/wp-admin/edit-tags.php?taxonomy=category0.325 s0.544 s+0.219 s3.72 MiB5.92 MiB+ 2.21 MiB
/wp-admin/post-new.php?post_type=page0.690 s1.488 s+0.798 s6.3 MiB8.6 MiB+ 2.31 MiB
/wp-admin/options-discussion.php0.355 s0.770 s+0.415 s3.71 MiB5.9 MiB+ 2.18 MiB
/wp-admin/edit-comments.php0.349 s0.529 s+0.180 s3.73 MiB5.92 MiB+ 2.18 MiB
/0.357 s0.238 s-0.119 s4.12 MiB6.19 MiB+ 2.07 MiB
Average 0.469 s0.844 s+0.375 s4.24 MiB6.43 MiB+ 2.2 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
JavaScript92.6%399,94117,71787
PHP5.2%22,61413,125282
JSON2.0%8,7750124
Markdown0.1%31603
CSS0.1%2540254
Total 431,900 30,842 750

PHP Code Analysis | More results »

Lines of code 21,761
Total complexity 4,901
Median class complexity 13.0
Median method complexity 3.0
Most complex class WP_Theme_JSON_Gutenberg
Most complex function gutenberg_get_layout_style()
Classes 39
Methods 354
Functions 546

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 1

PHP Error Log 4 lines

[02-Dec-2025 22:09:13 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 22:09:13 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 22:09:28 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
[02-Dec-2025 22:09:28 UTC] PHP Deprecated:  Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /wp-includes/functions.php on line 6131
See also: All tests for this plugin, How to Hide Gutenberg Admin Menus