Verdict
Choose GTmetrix when
- Technical SEO matters to you. Strong technical performance and Core Web Vitals diagnostics, but not a full technical SEO crawler.
- Free tools matters to you. Provides meaningful free page testing, with paid limits for scale.
- Agent readiness level matters to you. A current MCP server and REST API make testing agent-callable, but the product does not execute site fixes or retain business context.
- Measurement & tracking matters to you. Excellent synthetic measurement, monitoring, history, alerts, and real-user metrics.
Verdict
Choose Monitor Backlinks when
- Research depth matters to you. Strong backlink-change and backlink-profile research, but narrow in scope.
These tools solve different jobs. Scores are shown against each tool's own category, so the overall grades are not directly comparable. How grades work.
Read the full reviews: GTmetrix and Monitor Backlinks.