PFLB Service


Web application performance testing

Web applications and websites are crucial for conveying a business’s identity, and the speed at which these platforms function greatly influences the initial impression on customers.
The performance of a website is pivotal in determining its potential for supporting business growth.

By conducting load testing, your website can consistently deliver high performance and a positive user experience, enhancing your business’s revenue and customer satisfaction.
device macbook air

Stats don’t lie

A study by Akamai found that a 100-millisecond delay in website load time can result in a 7% reduction in conversions.
Google’s research has indicated that as page load time goes from one second to five seconds, the probability of bounce increases by 90%.
For e-commerce sites, studies have shown that even a two-second delay in page load times can result in abandonment rates of up to 87%.

When you might need it

At PFLB, we offer a wide range of web testing services, including:


Whether you’re launching a new website or updating an existing one, we provide performance testing services to ensure it can seamlessly handle the load upon its launch.

Establish a performance testing process

It’s crucial to establish a comprehensive testing process for each new website release, even if prior testing has been conducted.
This approach guarantees the early detection and resolution of performance issues to maintain a smooth user experience.

Stress testing

We specialize in stress testing, helping you prepare for peak loads during high-demand events like Black Friday, holidays, and advertising campaigns.
This ensures your application can effortlessly manage increased traffic without any disruptions.

What we could offer you

Web site testing requires attention to both the back-end and front-end parts. If an app works well on one device but fails under heavy loads from multiple users, it’s necessary to investigate the back-end and conduct load testing.

Conversely, if a web application performs poorly on a particular device model, the front-end may be the issue. We offer expertise in both areas, along with other related services to ensure that your app runs smoothly.
Our web site load testing service rigorously evaluates your website’s performance under heavy user loads. We identify bottlenecks, optimize responsiveness, and offer actionable recommendations for a seamless user experience.
Curious about your system’s competitive edge? We conduct comparison tests and enhance your product’s performance.
If you’re uncertain where to begin, we investigate both the back-end and front-end for bottlenecks, efficiently resolving them.
We configure PFLB for developers, making performance testing an integral part of your CI/CD process. Our training and support assist your development teams in adopting performance testing best practices.
If you already have a team of testers and wish to conduct performance testing in-house, we provide a user-friendly and robust platform along with comprehensive training.
Enhance user experiences and ensure swift web page loading by optimizing the front-end performance of your website through techniques like code optimization, asset compression, and responsive design.
Conduct endurance testing to simulate long-term, sustained usage of your website. This ensures that your site can handle continuous loads without experiencing performance degradation. During this process, we identify and address areas for optimization, including the detection and resolution of memory leaks.

Know more about the process

A well-defined process is essential for success.
  • 01

    Preparation and planning

    • Develop a load testing methodology with a focus on resource-intensive operations and SLA expectations.
    • Create testing scripts and third party systems emulators.
  • 02

    Infrastructure setup

    • Prepare test data and configure the test infrastructure.
    • Set up resource usage monitoring.
  • 03

    Performance testing and analysis

    • Run performance tests and monitor the results.
    • Conduct correlation analysis, map resource usage, and identify performance issues and bottlenecks.
  • 04

    Optimization and reporting

    • Recommend ways to optimize the system.
    • Form a detailed report with optimization recommendations.
  • 05


    • Perform additional testing iterations after project completion to validate changes.
Let us know about your needs
We can give you an access to the platform, we can provide multiple services, we can do all of it if the situation needs a far more complex approach.
Get a quote You’ll hear back from our tech account manager in one day if not sooner.

Get a thorough report

Sample report

You will receive a comprehensive report summarizing all the issues we uncover. This report includes visualized metrics and recommendations for performance optimization.
Each instance of resource overconsumption by the application is detailed, highlighting its business significance, the responsible component, and the specific section of the system involved.

This helps you identify which operation is consuming the most resources and pinpoints the component and code section responsible for the issue.
device macbook air
The test project and infrastructure are configured in the PFLB cloud. This configuration allows you to rerun the tests and obtain an independent analysis report for new releases of the application.
We will provide you with a bottleneck analysis report and optimization recommendations.
If our objective was to integrate this into your CI/CD process, the outcome will be a customized integration into your development pipeline.

Hire the best team possible

A dedicated team of specialists is assigned to your project, providing comprehensive support at every stage of the work.

Each team member brings extensive experience and is carefully selected based on the specific requirements of your request.




Product manager


Product manager

Collaboration is key to the success of every project.

To make it even more productive, we expect some assistance from your side:

Access to the test environment.
Collaboration with your test engineers.
Participation of application developers in code optimization.
Information about any specific devices you need to test and optimize.

Pay any way convenient

To ensure the most competitive pricing for our service, we assess costs on a project-by-project basis, considering the unique characteristics of each system.

The cost of our service typically depends on factors such as the number of load profiles, the types of functionality tests, and the devices that require testing and emulation.

We offer the following engagement options:

Let’s talk money
We’ll get you an offer after a 30-minutes consultation about your needs and expectations.
Get a quote No hidden fees, no credit card needed

See what we could achieve together

No more software limits to scaling your business
No hidden profit losses related to performance issues
No performance degradation with every new release
Fintech Yaroslav Medox

I was highly satisfied with the service provided by PFLB. The bank’s number of users doubled after M&A, so our internet bank’s performance degraded. PFLB did an awesome job helping us find and resolve performance bottlenecks during a comprehensive load testing project.

Yaroslav Medox
CIO, Bank
Software Evgeny Nasonov

PFLB’s performance testing was instrumental in resolving all performance issues pre-launch. Their seamless collaboration, skilled team, and timely delivery are commendable.

Evgeny Nasonov
COO at Diffco US, Inc
Insurance Our client

PFLB conducted extensive load testing on our software, simulating high user loads to evaluate performance, identify bottlenecks, and optimize the system’s responsiveness. Finally, they provided actionable recommendations to improve scalability and optimize resource utilization.

Our client
Insurance company
Healthcare Pankaj Mor

PFLB’s rapid load testing was a lifesaver on our tight launch deadline. Their expertise ensured our site could handle high sales seamlessly. Highly recommended!

Pankaj Mor
Tynor’s Chief Information Officer
Communication services Our client

PFLB’s load testing expertise played a critical role in uncovering performance limitations and bottlenecks in our educational platform project. Their meticulous approach and ability to adapt the testing methodology led to valuable insights, ensuring informed decisions for the project’s future development.

Our client
Communication services company
Media and telecom Our client

PFLB’s expertise in Wi-Fi load testing for in-flight entertainment systems proved invaluable. Their innovative approach and problem-solving skills led to the discovery of critical issues, ensuring passenger satisfaction and avoiding reputational harm.

Our client
Media company
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Get all the tech expertise and industry knowledge for optimizing your site
Get a quote You’ll hear back from our tech account manager in one day if not sooner.

What else we could be helpful with

In addition to website performance testing, we provide support for a range of systems, including call centers, banking infrastructure, and hardware optimization.
Our aim is to assist you in achieving your goals efficiently while optimizing system performance.
Discover the various systems we can test and optimize:

Mobile application


Ensure your app handles downloads smoothly. Test under controlled conditions to preemptively fix performance issues.

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Before investing in high-end hardware, assess performance capabilities for informed decisions.

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Expertise in managing vendor-specific and custom enterprise systems for enhanced employee productivity.

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Ensure reliable SAP performance for enhanced business productivity with seamless implementation and proactive tuning.

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Core banking


Critical load testing for banking systems, covering components like payment transactions and ATM networks, ensuring stability and preventing substantial losses.

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Assess IVR systems for optimal performance during peak call volumes, crucial for call center-dependent businesses.

Read about the service