Report - Klaviyo 2.3.1 - PluginTests.com

Does Klaviyo work with WordPress 5.5.1 and PHP 7.4.8? A smoke test was performed on 2020-09-09 12:41:25 UTC.

Summary

Errors

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

Performance

Memory usage: 58.69 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	5.5.1
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=1cdfddb7df
Aspect	after-activation
HTTP status	200
Load time	0.506 s
Memory usage	2.69 MiB
JS errors	None
Resource errors	None

Klaviyo

URL	/wp-admin/admin.php?page=klaviyo_settings
Aspect	menu-item
HTTP status	200
Load time	0.164 s
Memory usage	2.65 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	2.65 MiB
JS errors	None
Resource errors	None

Test site – Just another WordPress site

URL	/
Aspect	front-page
HTTP status	200
Load time	0.240 s
Memory usage	2.63 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	0.917 s
Memory usage	2.76 MiB
JS errors	None
Resource errors	None

Benchmark

URL	Load time			Memory usage
URL	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.461 s	0.325 s	-0.136 s	2.75 MiB	2.81 MiB	+ 55.89 KiB
/wp-admin/edit.php	0.239 s	0.236 s	-0.003 s	2.8 MiB	2.85 MiB	+ 55.92 KiB
/wp-admin/post-new.php	1.529 s	1.902 s	+0.373 s	4.54 MiB	4.64 MiB	+ 102.92 KiB
/wp-admin/upload.php	0.701 s	0.429 s	-0.272 s	2.63 MiB	2.68 MiB	+ 49.33 KiB
/wp-admin/options-writing.php	0.185 s	0.162 s	-0.023 s	2.64 MiB	2.66 MiB	+ 17.3 KiB
/wp-admin/media-new.php	0.222 s	0.181 s	-0.041 s	2.6 MiB	2.65 MiB	+ 49.5 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.189 s	0.194 s	+0.005 s	2.64 MiB	2.69 MiB	+ 50.41 KiB
/wp-admin/post-new.php?post_type=page	1.398 s	1.534 s	+0.136 s	4.53 MiB	4.63 MiB	+ 94.51 KiB
/wp-admin/options-discussion.php	0.336 s	0.272 s	-0.064 s	2.61 MiB	2.66 MiB	+ 49.81 KiB
/wp-admin/edit-comments.php	0.273 s	0.230 s	-0.043 s	2.65 MiB	2.69 MiB	+ 49.32 KiB
/	0.407 s	0.219 s	-0.188 s	2.56 MiB	2.63 MiB	+ 70.73 KiB
Average	0.540 s	0.517 s	-0.023 s	3 MiB	3.05 MiB	+ 58.69 KiB

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 2 lines

[09-Sep-2020 12:41:40 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
[09-Sep-2020 12:41:40 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

Klaviyo 2.3.1