Verdict
Choose Monitor Backlinks when
- Research depth matters to you. Strong backlink-change and backlink-profile research, but narrow in scope.
- Estimated customer scale matters to you. Official indexed product copy reports adoption above 100K users, but this is a historical/marketing claim rather than a current audited count.
Verdict
Choose WebPageTest when
- Technical SEO matters to you. Very strong Core Web Vitals and page-performance diagnostics.
- Free tools matters to you. Free tier includes substantial analysis rather than only a teaser.
- Value accessibility matters to you. The core speed test is free and can run without an account.
- Agent readiness level matters to you. APIs, scripting, custom metrics, and CI automation make tests programmable, but no dedicated autonomous SEO agent is documented.
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: Monitor Backlinks and WebPageTest.