How to Reduce Spam Score: Complete 2026 Guide

A high Moz Spam Score signals to search engines that your backlink profile contains low-quality, manipulative links. Left unchecked, it can suppress your rankings and trigger algorithmic filters. Here is the complete 2026 guide to auditing and reducing your spam score.

What Is Moz Spam Score?

Moz Spam Score is a metric from Moz that predicts the likelihood that a domain has been penalised by Google or shares characteristics with penalised sites. It is expressed as a percentage from 1% to 100% — the higher the score, the more spam-like signals Moz has detected on that domain.

Moz calculates Spam Score based on 27 spam signals including the ratio of followed to nofollowed links, the presence of thin content, lack of contact information, suspicious anchor text patterns, and hosting on known spam-heavy servers. A Spam Score above 30% is generally considered high-risk and warrants a cleanup audit.

Does Spam Score Affect Google Rankings?

Spam Score is a Moz metric — not a Google metric. Google does not use Moz's Spam Score directly in its ranking algorithm. However, the underlying signals that drive a high Spam Score also correlate with the kinds of toxic backlinks that Google's algorithms — particularly Penguin — target. A high Spam Score is therefore a reliable warning indicator that your backlink profile likely contains links that could suppress your rankings or trigger a manual review.

Step-by-Step Spam Score Reduction Process

Step 1: Export your full backlink profile

Use Moz Link Explorer, Ahrefs, or SEMrush to export a complete list of all domains linking to your site. Include the Spam Score (from Moz) and Domain Rating or Domain Authority for each referring domain. For a thorough audit, use at least two tools — each has different crawl coverage and will surface different links.

Step 2: Filter and flag high-risk links

Sort your export by Spam Score descending. Flag any referring domain with a Spam Score above 30% for further review. Also flag domains that are:

• Completely unrelated to your niche
• Foreign language sites with no relevance to your market
• Sites with DR above 20 but fewer than 100 organic monthly visitors (a hallmark of link farms)
• Sites with exact-match or over-optimised anchor text pointing to your domain
• Domains with '.xyz', '.info', '.top' or other low-quality TLDs in bulk

Step 3: Attempt manual removal first

For each flagged link, try to contact the webmaster of the linking site and request link removal. Keep a record of your outreach attempts — date sent, response received, and outcome. Google's disavow tool guidance states you should make a reasonable effort to remove links manually before disavowing them. In practice, you will get removal responses on fewer than 20% of outreach attempts, but the documentation is important.

Step 4: Build your disavow file

For all toxic links you could not remove manually, compile a disavow file in the format Google requires. Each line should be either a specific URL to disavow or an entire domain prefixed with 'domain:'. Disavowing at the domain level is more efficient when a spam site has multiple links pointing to you.

Step 5: Submit to Google Search Console

Go to Google Search Console → Legacy Tools → Disavow Links. Upload your disavow file. Google will process it within a few days and begin ignoring the specified links when evaluating your backlink profile.

Step 6: Replace toxic links with quality placements

Removing bad links is only half the equation. After cleanup, you need to build a clean, high-quality backlink profile to replace the authority you removed. See our spam score cleanup service →

Frequently Asked Questions

What Spam Score is acceptable?

A Spam Score of 1–17% is considered low risk. 18–30% is medium risk and worth monitoring. Above 30% warrants a cleanup audit.

Will disavowing links hurt my rankings?

Disavowing genuinely toxic links will not hurt your rankings. However, disavowing high-quality links by mistake can reduce your DR and ranking strength. Always review your disavow list carefully.

Can competitors build spam links to my site to hurt me?

This is called a negative SEO attack. Google has improved its defences against this tactic and typically ignores most artificial link profiles. However, if you notice a sudden spike in toxic referring domains, monitor it closely and be prepared to disavow if rankings begin to drop.