Verdict
Choose Google Lighthouse when
- Technical SEO matters to you. Useful page-level technical SEO and quality audits, but not a full site crawler.
- GEO readiness matters to you. Some experimental machine-readability checks, but no full GEO workflow.
- Ease of use and autonomous level matters to you. Easy to run and automate for audits, but outcomes still require expert interpretation and external implementation.
Verdict
Choose Google Trends when
- Research depth matters to you. Useful directional topic and query-interest research, without SEO difficulty, backlink, crawl, or SERP-depth data.
- Keyword research quality for SEO content matters to you. Supports directional topic discovery, but not an SEO keyword database or prioritization workflow.
- Context gathering matters to you. Provides geographic, temporal, topical, and curated-event context.
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: Google Lighthouse and Google Trends.