Toxic backlink checker & disavow tool
Find spammy, link-farm and low-quality backlinks pointing to any site — and download a ready Google disavow file. Free, no signup.
Toxic backlinks are links from spammy, low-quality or manipulative sites— link farms, PBNs, and throwaway domains on spam-heavy TLDs. A pile of them can erode a site's trust. This free tool flags them on any domain and hands you a ready Google disavow file. Enter a domain above to start.
How we detect toxic links
We score every referring domain on real signals from our independent 7.1-billion-link index:
- Authority. Very low-authority domains (DR 0–5) are common spam sources.
- Outbound volume. A domain that links out to thousands of sites is a classic link farm / PBN signal — we read this directly from the graph.
- TLD. Spam is over-represented on certain extensions (.xyz, .top, .click…).
One honest limit: our index is domain-level, so we can't read anchor text or detect site-wide footer links the way a page-level crawler does. But link-farm, low-authority and spam-TLD detection catches the bulk of a toxic profile. See the full backlink checker for the complete referring-domain list.
Before you disavow anything, read this
Disavowing is the one SEO action that can actively make things worse, because it is the only one where you tell Google to stopcounting something. Google's own position has been consistent for years: its ranking systems already ignore the overwhelming majority of spam links, so most sites never need a disavow file at all. Uploading a broad one — a whole TLD, every low-DR domain, everything you did not recognise — routinely removes links that were quietly helping.
Treat this report as a shortlist to review, not a list to submit. There are really only two cases where acting is justified: you have a manual actionfor unnatural links in Search Console, or you know links were bought or negative-SEO'd at your site and you cannot get them removed. Outside those two, the correct action is usually nothing.
How to review the list
- Open the page, not just the domain. A low authority score is not evidence of spam — new and small sites score low too. Look at whether a human would ever read that page.
- Look for the pattern. Real spam comes in batches: hundreds of domains linking with the same commercial anchor, or a network of sites with identical templates. One odd link is not a pattern.
- Try removal first. A link that is actually removed is cleaner than one that is disavowed, and it costs one email.
- Disavow by domain. When you do act, use
domain:entries — spam networks rotate URLs, so per-URL lines go stale immediately. - Keep the file. Uploading a new disavow file replaces the old one entirely. Always edit your existing file rather than submitting a fresh one.
Frequently asked questions
What is a toxic backlink?
A link from a spammy, low-quality or manipulative site — a link farm, PBN, or very low-authority page on a spam-associated domain. Too many can hurt a site's trust.
What is a Google disavow file?
A text file you upload to Google's Disavow Tool telling Google to ignore specific links. Seoluma generates it from the toxic domains it finds, in Google's exact format.
Should I disavow links?
Carefully — only for clearly harmful links you can't remove, especially after a manual action. Google ignores most bad links automatically, so review the list first.