Impact of Fibr Script on Website Performance

Website performance is one of the most crucial metrics that marketers care for. At Fibr, we understand that a drop in website performance metrics could potentially result in a loss of business. Hence, we put in our efforts to make sure that adding our script to your website leads to a minimal impact on performance.

To that effect, we have put together a study evaluating the impact of adding scripts of different personalization tools in the market on critical website performance metrics:

Overall Score

Test Condition	Fibr	VWO	Kameleoon	Mutiny
Without Script	68.6	68.6	68.6	68.6
With Script	61.9	58	57.2	58.5
Impact	-9.77%	-15.45%	-16.62%	-14.72%

First Contentful Paint (FCP)

Test Condition	Fibr	VWO	Kameleoon	Mutiny
Without Script	0.91 s	0.91 s	0.91 s	0.91 s
With Script	0.99 s	1.15 s	1.11 s	1.14 s
Impact	8.79%	26.37%	21.98%	25.27%

Largest Contentful Paint (LCP)

Test Condition	Fibr	VWO	Kameleoon	Mutiny
Without Script	1.92 s	1.92 s	1.92 s	1.92 s
With Script	2.21 s	2.31 s	2.15 s	2.6 s
Impact	15.10%	20.31%	11.98%	35.42%

Total Blocking Time

Test Condition	Fibr	VWO	Kameleoon	Mutiny
Without Script	481 ms	481 ms	481 ms	481 ms
With Script	587 ms	726 ms	953 ms	575 ms
Impact	22.04%	50.94%	98.13%	19.54%

Fibr continuously strives to further reduce the impact on page performance. While ranking among the top two in all these metrics, our aim is to make sure the impact on your page performance remains next to negligible.