Report - Header Footer Code Manager 1.1.37

Does Header Footer Code Manager work with WordPress 6.5.4 and PHP 8.1.12? A smoke test was performed on 2024-06-05 17:23:57 UTC.

Summary

Errors

	No PHP errors, warnings or notices
2	JavaScript exceptions
	All test pages loaded successfully
	No resource errors

Performance

Memory usage: 9.7 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: insignificant.
The plugin didn't make the site noticeably slower.

Environment

WordPress version	6.5.4
PHP version	8.1.12
MySQL version	10.6.10
PHP memory limit	512M

Plugin Info

Last updated	2026-06-11T13:25:00+00:00
Active installs	600,000+
WordPress.org page	https://wordpress.org/plugins/header-footer-code-manager/
Badges	Get badge code

Pages 5

Plugins ‹ Test site — WordPress

URL	/wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL	/wp-admin/plugins.php?action=activate&plugin=header-footer-code-manager%2F99robots-header-footer-code-manager.php&plugin_status=all&paged=1&s&_wpnonce=a5e97a3145
Aspect	after-activation
HTTP status	200
Load time	0.474 s
Memory usage	3.4 MiB
JS errors	None
Resource errors	None

HFCM

URL	/wp-admin/admin.php?page=hfcm-list
Aspect	menu-item
HTTP status	200
Load time	0.325 s
Memory usage	3.36 MiB
JS errors	None
Resource errors	None

HFCM → Add New

URL	/wp-admin/admin.php?page=hfcm-create
Aspect	menu-item
HTTP status	200
Load time	0.589 s
Memory usage	3.59 MiB
JS errors	[ { "message": "TypeError: Cannot read properties of null (reading 'addEventListener')\n at HTMLDocument.<anonymous> (/wp-content/plugins/header-footer-code-manager/js/nnr-hfcm-showboxes.js?ver=6.5.4:168:55)\n at e (/wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-codemirror,underscore&ver=6.5.4:2:27028)\n at t (/wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,wp-codemirror,underscore&ver=6.5.4:2:27330)", "trace": null, "code": null } ]
Resource errors	None

HFCM → Tools

URL	/wp-admin/admin.php?page=hfcm-tools
Aspect	menu-item
HTTP status	200
Load time	0.184 s
Memory usage	3.41 MiB
JS errors	`[ { "message": "TypeError: $(...).selectize is not a function\n at HTMLDocument.<anonymous> (/wp-content/plugins/header-footer-code-manager/js/nnr-hfcm-showboxes.js?ver=6.5.4:148:106)\n at e (/wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils&ver=6.5.4:2:27028)\n at t (/wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils&ver=6.5.4:2:27330)", "trace": null, "code": null } ]`
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.233 s
Memory usage	3.37 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.346 s	0.321 s	-0.025 s	3.44 MiB	3.46 MiB	+ 22.19 KiB
/wp-admin/edit.php	0.210 s	0.208 s	-0.002 s	3.46 MiB	3.48 MiB	+ 21.83 KiB
/wp-admin/post-new.php	0.950 s	0.612 s	-0.338 s	5.59 MiB	5.62 MiB	+ 27.16 KiB
/wp-admin/upload.php	0.547 s	0.483 s	-0.064 s	3.38 MiB	3.39 MiB	+ 5.91 KiB
/wp-admin/options-writing.php	0.222 s	0.212 s	-0.010 s	3.37 MiB	3.37 MiB	- 2.11 KiB
/wp-admin/media-new.php	0.305 s	0.262 s	-0.043 s	3.35 MiB	3.37 MiB	+ 18.1 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.283 s	0.204 s	-0.079 s	3.37 MiB	3.39 MiB	+ 23.27 KiB
/wp-admin/post-new.php?post_type=page	0.544 s	0.588 s	+0.044 s	5.59 MiB	5.61 MiB	+ 22.75 KiB
/wp-admin/options-discussion.php	0.313 s	0.485 s	+0.172 s	3.36 MiB	3.36 MiB	+ 6.42 KiB
/wp-admin/edit-comments.php	0.265 s	0.222 s	-0.043 s	3.39 MiB	3.4 MiB	+ 5.22 KiB
/	0.307 s	0.210 s	-0.097 s	3.42 MiB	3.37 MiB	- 44.01 KiB
Average	0.390 s	0.346 s	-0.044 s	3.79 MiB	3.8 MiB	+ 9.7 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.

PHP

CSS

PO File

Language		%	Lines of code	Comment lines	Files
	PHP	65.1%	2,095	268	5
	CSS	19.0%	612	17	3
	PO File	8.7%	281	269	1
	JavaScript	7.1%	230	21	3
	SVG	0.0%	1	0	1
Total			3,219	575	13

PHP Code Analysis | More results »

Lines of code	1,529
Total complexity	292
Median class complexity	146.0
Median method complexity	2.0
Most complex class	NNR_HFCM
Most complex function	NNR_HFCM::hfcm_add_snippets()

Classes	2
Methods	49
Functions	0

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.

Database Tables 1

wp_hfcm_scripts

Options `wp_options` 2

hfcm_activation_date
hfcm_db_version

PHP Error Log

The log file is empty.

Header Footer Code Manager 1.1.37