Gutenberg 15.4.0

Does Gutenberg work with WordPress 6.1.1 and PHP 8.1.12? A smoke test was performed on .


No PHP errors, warnings or notices
1JavaScript exceptions
All test pages loaded successfully
1Resource error (CSS, JS, images, fonts and so on.)
  • 1 net::ERR_FAILED

Memory usage: 934.4 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.041 seconds
The average page load time increased by this amount after activating the plugin.

WordPress version6.1.1
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
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=275b5d6c34
Aspect after-activation
HTTP status 200
Load time 0.389 s
Memory usage 3.72 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 1.609 s
Memory usage 6.73 MiB
JS errors
        "message": "Error: FastAverageColor: Error loading image \"\".\n    at $l (/wp-content/plugins/gutenberg/build/block-library/index.min.js?ver=f49479adf3367a95aa41:28:25692)\n    at Image.l (/wp-content/plugins/gutenberg/build/block-library/index.min.js?ver=f49479adf3367a95aa41:28:28915)",
        "trace": null,
        "code": null
Resource errors
        "status": null,
        "statusText": null,
        "url": "",
        "errorString": "net::ERR_FAILED"

Gutenberg → Experiments

Page screenshot: Gutenberg → Experiments
URL /wp-admin/admin.php?page=gutenberg-experiments
Aspect menu-item
HTTP status 200
Load time 0.252 s
Memory usage 3.59 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 0.232 s
Memory usage 4.42 MiB
JS errors None
Resource errors None


URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.284 s0.576 s+0.292 s3.05 MiB3.69 MiB+ 659.17 KiB
/wp-admin/edit.php0.183 s0.201 s+0.018 s3.07 MiB3.72 MiB+ 660.33 KiB
/wp-admin/post-new.php0.773 s0.908 s+0.135 s4.97 MiB6.72 MiB+ 1.75 MiB
/wp-admin/upload.php0.546 s0.281 s-0.265 s2.99 MiB3.62 MiB+ 642.61 KiB
/wp-admin/options-writing.php0.167 s0.147 s-0.020 s2.99 MiB3.6 MiB+ 627.78 KiB
/wp-admin/media-new.php0.261 s0.260 s-0.001 s2.97 MiB3.61 MiB+ 654.74 KiB
/wp-admin/edit-tags.php?taxonomy=category0.183 s0.180 s-0.003 s2.98 MiB3.62 MiB+ 658.98 KiB
/wp-admin/post-new.php?post_type=page0.616 s0.833 s+0.217 s4.96 MiB6.71 MiB+ 1.75 MiB
/wp-admin/options-discussion.php0.208 s0.327 s+0.119 s2.97 MiB3.6 MiB+ 641.63 KiB
/wp-admin/edit-comments.php0.202 s0.221 s+0.019 s3 MiB3.63 MiB+ 641.54 KiB
/0.283 s0.219 s-0.064 s2.94 MiB4.42 MiB+ 1.47 MiB
Average 0.337 s0.378 s+0.041 s3.35 MiB4.27 MiB+ 934.4 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 223,541 73,050 596

PHP Code Analysis | More results »

Lines of code 17,804
Total complexity 4,179
Median class complexity 15.0
Median method complexity 3.0
Most complex class WP_Theme_JSON_Gutenberg
Most complex function gutenberg_render_block_core_navigation()
Classes 35
Methods 310
Functions 398


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 Gutenberg Admin Menus