Report - Klaviyo 2.4.2 - PluginTests.com

Does Klaviyo work with WordPress 5.7.2 and PHP 7.4.8? A smoke test was performed on 2021-06-16 19:46:35 UTC.

Summary

Errors

3	PHP notices
	No JavaScript exceptions
	All test pages loaded successfully
	No resource errors

Performance

Memory usage: 73.29 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.068 seconds
The average page load time increased by this amount after activating the plugin.

Environment

WordPress version	5.7.2
PHP version	7.4.8
MySQL version	8.0.21
PHP memory limit	256M

Plugin Info

Last updated	2026-03-09T16:36:00+00:00
Active installs	100,000+
WordPress.org page	https://wordpress.org/plugins/klaviyo/
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=klaviyo%2Fklaviyo.php&plugin_status=all&paged=1&s&_wpnonce=ec277e6484
Aspect	after-activation
HTTP status	200
Load time	2.074 s
Memory usage	2.83 MiB
JS errors	None
Resource errors	None

Klaviyo

URL	/wp-admin/admin.php?page=klaviyo_settings
Aspect	menu-item
HTTP status	200
Load time	0.154 s
Memory usage	2.73 MiB
JS errors	None
Resource errors	None

Klaviyo → Help

URL	/wp-admin/admin.php?page=klaviyo_help
Aspect	menu-item
HTTP status	200
Load time	0.146 s
Memory usage	2.72 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.213 s
Memory usage	2.7 MiB
JS errors	None
Resource errors	None

Widgets ‹ Test site — WordPress

URL	/wp-admin/widgets.php
Aspect	new-sidebar-widgets
HTTP status	200
Load time	0.892 s
Memory usage	2.89 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.288 s	0.290 s	+0.002 s	2.82 MiB	2.88 MiB	+ 62.47 KiB
/wp-admin/edit.php	0.186 s	0.199 s	+0.013 s	2.86 MiB	2.92 MiB	+ 62.5 KiB
/wp-admin/post-new.php	0.934 s	1.421 s	+0.487 s	5.02 MiB	5.21 MiB	+ 194 KiB
/wp-admin/upload.php	0.528 s	0.356 s	-0.172 s	2.7 MiB	2.75 MiB	+ 55.91 KiB
/wp-admin/options-writing.php	0.268 s	0.316 s	+0.048 s	2.71 MiB	2.73 MiB	+ 23.88 KiB
/wp-admin/media-new.php	0.232 s	0.197 s	-0.035 s	2.67 MiB	2.73 MiB	+ 56.08 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.200 s	0.286 s	+0.086 s	2.77 MiB	2.83 MiB	+ 56.98 KiB
/wp-admin/post-new.php?post_type=page	1.270 s	1.641 s	+0.371 s	5.01 MiB	5.14 MiB	+ 129.59 KiB
/wp-admin/options-discussion.php	0.331 s	0.321 s	-0.010 s	2.67 MiB	2.73 MiB	+ 56.39 KiB
/wp-admin/edit-comments.php	0.245 s	0.236 s	-0.009 s	2.78 MiB	2.83 MiB	+ 55.9 KiB
/	0.266 s	0.236 s	-0.030 s	2.65 MiB	2.7 MiB	+ 52.54 KiB
Average	0.432 s	0.500 s	+0.068 s	3.15 MiB	3.22 MiB	+ 73.29 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

JavaScript

Language		%	Lines of code	Comment lines	Files
	PHP	89.7%	1,269	331	13
	JavaScript	10.3%	145	53	3
Total			1,414	384	16

PHP Code Analysis | More results »

Lines of code	1,275
Total complexity	206
Median class complexity	11.0
Median method complexity	2.0
Most complex class	WPKlaviyoAdmin
Most complex function	wck_insert_checkout_tracking()

Classes	10
Methods	54
Functions	23

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

klaviyo_settings
widget_klaviyo_emailsignup_widget

Sidebar Widgets 1

ID	Name
klaviyo_emailsignup_widget	Klaviyo: Legacy Email Sign Up

Capabilities 17

edit_klaviyo_shop_cart
read_klaviyo_shop_cart
delete_klaviyo_shop_cart
edit_klaviyo_shop_carts
edit_others_klaviyo_shop_carts
publish_klaviyo_shop_carts
read_private_klaviyo_shop_carts
delete_klaviyo_shop_carts
delete_private_klaviyo_shop_carts
delete_published_klaviyo_shop_carts
delete_others_klaviyo_shop_carts
edit_private_klaviyo_shop_carts
edit_published_klaviyo_shop_carts
manage_klaviyo_shop_cart_terms
edit_klaviyo_shop_cart_terms
delete_klaviyo_shop_cart_terms
assign_klaviyo_shop_cart_terms

PHP Error Log 3 lines

[16-Jun-2021 19:46:50 UTC] PHP Notice:  Trying to access array offset on value of type bool in /wp-content/plugins/klaviyo/includes/class-wpklaviyo.php on line 26
[16-Jun-2021 19:46:52 UTC] PHP Notice:  Trying to access array offset on value of type bool in /wp-content/plugins/klaviyo/includes/class-wpklaviyo.php on line 52
[16-Jun-2021 19:46:53 UTC] PHP Notice:  Undefined index: klaviyo_subscribe_checkbox in /wp-content/plugins/klaviyo/inc/kla-admin.php on line 105

Klaviyo 2.4.2