PerfDelta Press Kit: Key Figures, Logo and Contact

PerfDelta: free website speed test with its own data study

PerfDelta is a free website speed test that measures several pages of a site with lab data from Google PageSpeed Insights and real-user data from the Chrome UX Report, and compares the Core Web Vitals with competitors.

PerfDelta is built and run by Christian Schreiber in Berlin, Germany. Its measurements feed the Website Speed Statistics, which are recalculated every day and keep one fixed edition per month.

Key figures on website speed (as of October 18, 2026)

The figures come from the Website Speed Statistics and are updated daily. For a fixed reference, please cite the monthly edition.

• 48% of the 5,935 websites with field data pass all three Core Web Vitals (Chrome UX Report, 75th percentile).
• 73% have a good INP (200 milliseconds or less).
• The median home page weighs 4.3 MB in the mobile lab test, 1.5 MB of it JavaScript.
• 96% of home pages load third-party code.
• The median Lighthouse performance score is 43 out of 100.

All figures as a table: Download data (CSV, CC BY 4.0).

How PerfDelta measures

For each domain the home page is measured. Field data comes from the Chrome UX Report, lab data from Lighthouse via the PageSpeed Insights API. The sample consists mostly of well-known, professionally run websites and does not represent the web as a whole; please mention this in your coverage. Full details are in the methodology.

Citing the data: CC BY 4.0

The data on the study, country, industry, platform and third-party pages is licensed under CC BY 4.0. You may use the figures and charts freely if you credit PerfDelta and link to the study. Please state the data date.

Suggested citation: Source: PerfDelta, Website Speed Statistics (as of October 18, 2026), https://perfdelta.com/website-speed-statistics

Ready-made charts with a source line are in the Embed a key figure section of the study.

Logo and images

You may use the logo in coverage of PerfDelta. Please keep its proportions and colour. On dark backgrounds, use the SVG version and change its fill colour.

• Wordmark (SVG, 768 × 149 px)
• Wordmark (JPG, 768 × 149 px)
• Symbol (SVG, 176 × 141 px)
• Symbol (PNG, 180 × 180 px)

Press contact and operator

Questions about the study and interview requests are answered by Christian Schreiber. Write to [email protected] or use the contact form.

Operator details are in the legal notice. More about the founder