@fastify/helmet vs Jscrambler Webpage Integrity: Side-by-Side Comparison (2026)

@fastify/helmet: A Fastify plugin that implements HTTP security headers through a wrapper around the helmet library to protect web applications from common vulnerabilities..

Jscrambler Webpage Integrity: Client-side platform for controlling third-party script behavior and preventing data. built by Jscrambler. Core capabilities include Real-time inventory of all third-party scripts and their data access/transfer behavior, Granular policy engine to control third-party tag behavior per page or section, Sensitive user data management with customizable data categories and dashboards..

Both serve the Runtime Application Self-Protection market but differ in approach, feature depth, and target audience.

@fastify/helmet is open-source with 453 GitHub stars. Jscrambler Webpage Integrity is developed by Jscrambler. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

@fastify/helmet and Jscrambler Webpage Integrity serve similar Runtime Application Self-Protection use cases: both are Runtime Application Self-Protection tools, both cover Web Security. Key differences: @fastify/helmet is Free while Jscrambler Webpage Integrity is Commercial, @fastify/helmet is open-source. Review the feature comparison above to determine which fits your requirements.