Fibr Support
  • Fibr Docs
  • Get Started
    • Intro to Fibr
      • What is Fibr?
      • What products does Fibr offer?
    • Account Settings
      • Inviting Your Team
    • Fibr Script
      • What is Fibr Script?
      • Configuring the Fibr Script for your website
      • Impact of Fibr Script on Website Performance
    • FAQs
      • How to Whitelist Fibr in Your Website’s Content Security Policy (CSP)?
      • Can You Run Fibr on Your Local Machine?
  • Fibr Testing
    • Intro to A/B Testing
      • How to Create an A/B Test in Fibr?
      • How do you create a bulk AB campaign?
    • Audience Selection
      • Define your Audience Segment
      • Location-based Segmentation
    • FAQs
      • What are Traffic Allocation and Traffic Split?
      • Can I change an experiment's configuration when it is running?
      • Can I Run Fibr Tests on a Website That Has Cookies Disabled?
      • Can I Run Fibr Tests on Sub-domains?
      • Scheduling a Campaign in Fibr
  • Fibr Personalization
    • Ad Personalization
      • How to create an Ad Personalization campaign?
      • How to create a bulk Ad Personalization campaign?
    • Audience Personalization
      • How to create an Audience Personalization campaign?
      • Defining the audience for Audience Personalization
      • Location-based Segmentation
      • How to create a bulk Audience Personalization campaign?
  • Fibr Editor
    • Using Visual Editor to Create Variants
    • Using Visual Editor to track events
    • Using Fibr Editor for Bulk Variant Creation
  • Metrics
    • How can I define metrics on Fibr?
    • How do the GTM metrics work on Fibr?
    • What is a Primary Metric?
  • Integrations
    • Integrating Fibr with Google Analytics 4
    • Integrating Fibr with Google Tag Manager
    • Integrating Fibr with Google Ads
    • Integrating Fibr with Meta Ads
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  • Overall Score
  • First Contentful Paint (FCP)
  • Largest Contentful Paint (LCP)
  • Total Blocking Time
  1. Get Started
  2. Fibr Script

Impact of Fibr Script on Website Performance

See how the Fibr Script performs across key metrics like FCP, LCP, and Total Blocking Time. Designed for speed, Fibr ensures minimal impact 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.

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Last updated 7 months ago