Webflow vs Custom — Platform Benchmark

54.4

Webflow

19 sites

WINNER

51.9

Custom

256 sites

Score Summary

Avg AI Readability

57.5 52.3

Avg Security

50.9 37.3

Avg Efficiency

54.7 56.8

Avg Total Score

54.4 51.9

Avg Structure

64.5 47.2

Avg Load Complexity

50.2 67.7

Avg Lighthouse

48.9 55.1

Best Site Score

66.4 87.6

Worst Site Score

31.6 15.7

Webflow Custom

Performance by Industry

Average total score for each platform within shared industries.

Industry	Webflow	Custom
Architecture	65.2 1 sites	52.4 6 sites
Content Creation	51.3 3 sites	54.1 6 sites
Corporate-personal	63.1 2 sites	47.3 86 sites
Design	56.6 2 sites	66.2 3 sites
Photography	52.3 11 sites	54.1 155 sites

Comparison Insights

Overall Verdict

Webflow holds a modest 2.5-point lead over Custom. The difference is real but not decisive.

Dimension Edge

Webflow leads in: AI Readability, Security, Structure. Custom leads in: Efficiency, Load Complexity, Lighthouse. Each platform has distinct strengths in different dimensions.

Opportunities for improvement

Webflow could target Efficiency, Load Complexity, Lighthouse to close the gap.
Custom could target AI Readability, Security, Structure to improve.

Industry-by-Industry Results

Custom wins in 3 of 5 shared industries - its overall lead holds across verticals.

Sample Size Consideration

Custom has 13.5× more audited sites than Webflow. Larger samples surface more variation and may pull averages toward the mean, so this comparison should be read with that in mind.