Domain Authority vs PageRank: Choose Link Actions from Evidence

Your authority score fell, but the pages and links you can see have not changed. Should you buy more links, rewrite the page, or investigate first? Start by identifying what the score measures and which observation supports an action.

Domain Authority and PageRank answer different questions

Domain Authority (DA) is Moz’s comparative metric for estimating ranking potential. Moz’s historical DA 2.0 guide distinguishes it from PageRank and says Google does not use that score. The guide explains the distinction; it is not a specification of today’s Moz model.

Google’s ranking systems guide describes link analysis as helping interpret relationships between pages. PageRank remains part of Google’s core systems and has evolved since its original implementation. The original formula does not let an audit tool reconstruct Google’s current calculations.

A vendor score is therefore not a Google PageRank reading. Do not convert DA, DR, or another authority score into a required number of backlinks or a prediction that one page must outrank another. For the broader context, see the Google ranking systems guide.

Match the observation to the next check

The following is a practical decision aid, not a Google scoring formula.

Observation	Evidence to collect	Proportionate action
A vendor score changes	Provider, date, affected URLs, underlying link records	Investigate; the score alone justifies no page change
An important internal destination is hard to reach	Source page, rendered anchor, actual destination	Add a useful contextual link or repair the wrong destination
A backlink appears in Search Console	Linking page, current link, destination, relationship	Inspect the source before deciding whether anything needs fixing
A paid placement lacks qualification	Commercial relationship and rendered rel value	Correct the qualification on links you control
An unfamiliar link looks suspicious	Link pattern, provenance, manual-action evidence	Assess against policy; do not automatically disavow

The Search Console Links report is a sample. Its tables can be limited to 1,000 rows; larger export options have separate limits. Links may have disappeared since discovery, and the report does not show nofollow status. Neither absence nor presence proves Google’s current ranking treatment of a link.

Inspect one link before changing a template

1. Record the source URL, intended destination, inspection date, and reason the link helps a reader.
2. Inspect the rendered HTML. Google’s link guidance recommends an <a> element with an href and meaningful anchor text.
3. Follow the link. Check the final destination, response, language, and whether it fulfils the anchor’s promise.
4. Check the relationship. For paid placements, Google prefers rel="sponsored"; nofollow remains acceptable. Use ugc for user-generated links as described in the qualification guidance.
5. Repair only the demonstrated defect, then repeat the same inspection. Save before/after evidence separately from search-performance observations.

For example, imagine a category page whose “installation instructions” link opens a discontinued product. Correcting it to the relevant instructions fixes navigation. This is an illustrative scenario, not a measured customer result, and it does not establish a PageRank increase.

Use anchor text to set expectations, backlink checks to examine external references, and link-building guidance when planning acquisition. A nofollow link is not a precise PageRank control.

Keep risk decisions separate from score changes

Google’s link spam policy addresses manipulative activity such as paid ranking links, excessive exchanges, and automated link creation. A low score is not that evidence.

The disavow tool is for a considerable number of spammy or artificial links that caused, or are likely to cause, a manual action. Most sites do not need it; misuse can harm search performance.

Judge the repair first by its observable result: the right destination, a usable link, accurate wording, and appropriate qualification. Later traffic changes need their own comparison and cannot reveal how much PageRank an individual link contributed.