Test tools and global quality metrics used in the study
| Item | Global quality metric | Measuring tool |
|---|---|---|
| 1 | Open PageRank (OPR) | A DomCop tool for comparing websites |
| 2 | Ahref Domain Rating (ADR) | Ahref Website Authority Checker |
| 3 | Moz Domain Authority (Moz DA) | Moz Domain Authority Checker |
| 4 | Authority Score (ZAS) Domain Authority (ZDA) Page Authority (PZA) | Zadro Web SEO Auditor |
| 5 | Domain Authority Score | SEO Review Tools, Website Authority Checker |
| 6 | Trust Flow Citation Flow | Majestic SEO Backlink Checker |
| 7 | Total Valuable Backlinks | BacklinkWatch Backlink Checker |
| Item | Global quality metric | Measuring tool |
|---|---|---|
| 1 | Open PageRank (OPR) | A DomCop tool for comparing websites |
| 2 | Ahref Domain Rating (ADR) | Ahref Website Authority Checker |
| 3 | Moz Domain Authority (Moz DA) | Moz Domain Authority Checker |
| 4 | Authority Score (ZAS) | Zadro Web SEO Auditor |
| 5 | Domain Authority Score | SEO Review Tools, Website Authority Checker |
| 6 | Trust Flow | Majestic SEO Backlink Checker |
| 7 | Total Valuable Backlinks | BacklinkWatch Backlink Checker |
Note(s): URLs of the tools: 1. www.domcop.com/openpagerank/; 2. https://ahrefs.com/pl/website-authority-checker/; 3. https://moz.com/domain-analysis/; 4. https://zadroweb.com/seo-auditor/; 5. www.seoreviewtools.com/website-authority-checker/; 6. https://pl.majestic.com/; 7. www.backlinkwatch.com/; accessed: 20.02.2024
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