Toxic Backlinks: How to Identify and Remove Them

Honestly, the whole "toxic backlinks" panic is mostly overblown. Mostly.

I say "mostly" because there are edge cases. There always are. But somehow the SEO industry has turned this concept into a terrifying boogeyman that keeps website owners up at night, refreshing their Ahrefs dashboards, staring at red numbers like they're watching a stock portfolio crash. And that fear? It's made a lot of people a lot of money. Consultants, tool providers, agencies selling "link cleanup" packages for thousands of dollars. An entire sub-industry built on anxiety.

Let's back up though. What even is a toxic backlink? In short: it's a link pointing to your website from somewhere that Google considers spammy, manipulative, or otherwise sketchy. Think links from hacked sites, link farms, private blog networks (PBNs), foreign-language gambling sites that have nothing to do with your niche, automated blog comment spam, directories that exist solely for the purpose of selling links. That sort of thing.

A longer answer gets more complicated. Because "toxic" is a judgment call. Not a binary. Google doesn't publish a list of toxic domains. Every tool that flags links as toxic — Semrush, Ahrefs, Moz — they're all using their own proprietary algorithms to guess which links might be harmful. Those guesses don't always line up with reality, either. I've seen Ahrefs flag legitimate government websites as toxic. Semrush once gave a toxicity score of 85 to a link from a perfectly normal small business blog. Useful starting points, sure, but not gospel.

What Google Actually Says About Bad Links

Most people in the SEO space either don't know or conveniently ignore this: Google's own John Mueller has said, repeatedly, that most bad links are simply ignored. Not penalized. Ignored. Massive difference between those two things. In a 2021 Google Search Central hangout, Mueller said something along the lines of — and I'm paraphrasing here because these hangouts are long and sometimes hard to pin down exact quotes — that Google's algorithms are pretty good at recognizing spammy links and just discounting them. They don't count for you, but they also don't count against you.

Just... nothing. Background noise. He's said variations of this dozens of times over the years, in tweets, in hangouts, in conference talks. Surprisingly consistent messaging: we can handle this, you probably don't need to worry about it, and the disavow tool is there for very specific situations. Yet somehow the SEO industry collectively decided to keep panicking anyway.

Gary Illyes from Google has been even more blunt about it. At one point he said something like "I wouldn't lose sleep over it" when asked about spammy backlinks. According to him, the disavow tool is really meant for people who've been involved in link schemes and want to clean up, not for people who happen to have some junk links pointing at them. Which, by the way, describes literally every website on the internet. Any site that's been around for more than a year or two has weird links. Everyone does. Our article on The Complete Guide to Backlink Monitoring Tools explores this idea in more depth.

Now. Does this mean you should never worry about toxic backlinks at all? No. I said mostly overblown, not entirely overblown. Certain situations exist where bad links can actually cause problems.

When Toxic Backlinks Actually Matter

Situation one: you bought links. Or someone on your team bought links. Or an agency you hired bought links on your behalf without telling you. Actively participating in a link scheme and having Google catch on? Different ballgame. A manual action — what used to be called a penalty — is a real thing that really happens to real websites. Just not as common as the fear-mongering would suggest. But getting a notification in Google Search Console that says "Manual Actions" with something about unnatural links means, yes, you have a problem. Deal with it.

Situation two: negative SEO. Here a competitor intentionally builds thousands of spammy links to your site in an attempt to tank your rankings. For years, the SEO community has debated whether this actually works. Google says their algorithms handle it. Some SEOs swear they've seen it happen. My take? Probably worked better five or ten years ago. Today, Google's systems are sophisticated enough that a sudden influx of garbage links to an established site will likely just get filtered out. For newer sites with thin link profiles, though? Maybe. Hard to say definitively. I've seen cases that looked like negative SEO but could've been explained by other factors. Correlation and causation and all that.

Situation three: you're in a genuinely competitive YMYL (Your Money Your Life) niche — think legal, medical, financial — and your link profile is disproportionately sketchy compared to your competitors. In theory, even with Google ignoring the bad links, having a ratio of good-to-bad that's wildly different from top-ranking sites might warrant a cleanup. Though honestly, in that scenario, spending your time building more good links probably beats trying to remove bad ones.

How to Actually Check Your Backlink Profile

Okay, so let's say you want to look at your links. Maybe you've got a nagging feeling. Maybe your rankings dropped and you want to rule things out. Maybe you just inherited a website from someone else and want to know what you're working with. Fair enough. Here's how I'd approach it, without the panic.

Start with Google Search Console. Go to Links > External links. What you'll see is what Google is actually recognizing. Not as detailed as third-party tools, but straight from the source. Look through the top linking sites. Anything jump out as weird? Sites in languages you don't recognize? Domains that are clearly auto-generated? Note those.

Only then should you pull up a third-party tool. Ahrefs, Semrush, Moz, whatever you've got access to. Run a backlink audit. Here's the critical part, though: don't just look at the toxicity score and freak out. Actually click through to the linking pages. Are they real websites? Do they have actual content? Or are they just walls of links and gibberish text? Context matters more than any automated score.

When evaluating a link profile, I typically look for patterns, not individual links. One random link from a Chinese gambling site is meaningless. Three thousand links from Chinese gambling sites that all appeared in the same week? Worth investigating. A couple of links from low-quality directories? Who cares. Five hundred links from directories that all use the same template and were clearly set up as part of a network? Different story entirely. For those newer to this process, What Are Backlinks and Why Do They Matter for SEO breaks it down step by step.

Here's a rough checklist — and I hate checklists because they oversimplify things, but people seem to want them:

• Links from sites in completely unrelated languages (and you don't operate in those markets)
• Links from sites with no real content — just link lists, auto-generated text, or scraped content
• Links from known PBN patterns — similar site designs, same hosting, interlinked in obvious ways
• Massive spikes of links appearing all at once from low-quality sources
• Links with exact-match anchor text at unnaturally high rates
• Links from sites that have been hacked (you can sometimes tell by visiting them — weird pharma or casino content injected into otherwise normal sites)

That last one is interesting because it's not really about you. Some legitimate site got hacked, the hacker injected a bunch of outbound links including one to your site, and now you've got a "toxic" backlink from what is technically a real website. Google's systems have gotten very good at detecting hacked sites and discounting those links. Still something to be aware of, though.

Proceed with Caution: The Disavow Tool

Google's Disavow Tool. Nuclear option that everyone seems way too eager to use. Located in Google Search Console, it lets you upload a text file telling Google "please ignore these links." Sounds great, right? Except using it wrong can actually hurt you.

Think about it. You're literally telling Google to ignore links pointing to your site. What if some of those links are actually helping you? What if your toxicity scoring tool flagged a legitimate link as suspicious? Disavow it, and suddenly you've voluntarily given up link equity that was benefiting your rankings. I've seen this happen more than once. Someone goes on a disavow spree, removes everything their tool flagged as toxic, and their rankings drop. Not because the toxic links were helping them — although sometimes they were, weirdly — but because legitimate links got caught in the crossfire.

Mueller himself has cautioned against using the disavow tool unless you really need to. His position boils down to this: most sites don't need it, and using it incorrectly can cause issues. Yet there are SEO agencies out there running disavow files as a standard part of their monthly service packages. Just... routinely telling Google to ignore links. For every client. Regardless of whether there's actually a problem. Malpractice, honestly.

Should you decide to use the disavow tool, here's the approach I'd recommend. And look, this is just how I do it. Other people might disagree. Fine by me.

First, only disavow links you're genuinely confident are problematic. Not "might be toxic according to a tool." Genuinely problematic. You can see the site is a link farm. You know the link was part of a paid link scheme. Clearly a hacked site. That kind of thing.

Second, try to disavow at the domain level rather than individual URL level when possible. When an entire domain is garbage, disavow the whole domain. Use the "domain:" prefix in your disavow file. Like: domain:spamdomain.com. Cleaner, and catches any future links from that domain too. We wrote an entire guide on this: How to Analyze Your Backlink Profile Like a Pro.

Third, keep a record of everything you disavow and why. You might want to undo it later. Google doesn't make it easy to track this, so maintain your own spreadsheet. Date of disavow, domain or URL, reason. Boring but important.

Fourth — and this is the one people skip — try contacting the webmaster first. Yes, I know. Nobody wants to do this. Feels pointless. Honestly, most of the time it is pointless. Sites hosting spammy links to you are usually abandoned, operated by bots, or run by people who don't speak your language. But Google's official guidance says to try, and when dealing with a manual action, showing that you made the effort matters. Send a polite email. Wait a couple of weeks. Nothing happens? Move to the disavow.

Getting the Disavow File Format Right

Plain text file. One entry per line. Comments go with the # symbol. Pretty straightforward but people still manage to mess it up. Here's what it looks like:

# Disavowed on 2024-03-15 - link farm network
domain:spammylinks123.com
domain:cheapbacklinks.net

# Disavowed on 2024-03-15 - hacked site injecting pharma links
domain:hacked-small-business.com

# Individual URL - paid link we purchased in 2022
https://www.example-blog.com/sponsored-post-about-our-product

Upload it in Google Search Console under Security & Manual Actions > Disavow links (or just Google "Google disavow tool" and it'll take you there). Processing can take weeks or months. Patience. Not that anyone in SEO has any patience.

An Anchor Text Problem Nobody Talks About

You know what's actually more concerning than the source of a link? Anchor text distribution. And this is where things get genuinely complicated — where I think the industry's obsession with "toxic domains" misses the forest for the trees.

Picture this: 40% of your backlinks use the exact same keyword-rich anchor text — like "best personal injury lawyer in Chicago" — and that's a much bigger red flag than having some links from low-quality sites. Natural link profiles have messy anchor text. Your brand name. "Click here." "This article." Raw URLs. Random phrases. Maybe 5-10% exact match keywords if you're lucky. When that percentage climbs way higher, it screams manipulation regardless of where the links are coming from.

I've audited sites that had beautiful link profiles — great domains, high authority, relevant niches — but their anchor text was so obviously engineered that it was clearly artificial. Meanwhile, sites with tons of "toxic" links from random places rank just fine because the anchor text looked natural. Messy stuff. SEO is messy. Clean answers are rare.

Not enough tools emphasize this, in my opinion. They'll show you a big scary toxicity score based on the linking domain, but the anchor text analysis is usually buried three tabs deep. Backwards, if you ask me. See also our post on How Many Backlinks Do You Need to Rank on Google? for more on this.

What About Link Velocity?

Link velocity — how fast you're acquiring links — is another factor that matters more than most toxic backlink discussions acknowledge. Say your site normally gets 10-20 new links per month and then suddenly gets 5,000 in a week. Suspicious regardless of quality. Could be viral content. Could be negative SEO. Could be a link building campaign that was too aggressive too fast. Google's algorithms watch for these patterns and can either discount the links or flag the site for manual review.

On the flip side, building links steadily while some happen to come from lower-quality sources? Pretty normal. Real websites get random links from random places. Just how the internet works. Some blog scrapes your content and links back. An aggregator picks up your RSS feed. A forum user drops your URL in a thread. All just... the web being the web.

Inside the Fear Economy

I want to spend a minute on why toxic backlinks have become such a big deal in the SEO world, because understanding the incentive structure helps you make better decisions about where to spend your time and money.

SEO tool companies profit from your anxiety. They profit when you log in every day to check your "site health" score. Revenue flows when you see a red number and think "I need to fix this." Toxicity scoring features in these tools are designed to make problems seem bigger than they are. Hearing that a site has 500 "toxic" backlinks sounds terrifying. But out of 50,000 total backlinks? That's 1%. Nothing.

Agencies benefit from the same dynamic. Showing you a report with scary red numbers and saying "we need to clean this up" creates a recurring revenue stream. Monthly link monitoring. Quarterly disavow file updates. Annual backlink audits. Adds up fast. Not all agencies are acting in bad faith — plenty are doing genuine, good work. But the incentive to over-diagnose is real and it warps the industry.

Then come the "negative SEO protection" services. Companies that monitor your backlinks and proactively disavow anything that looks suspicious. Which, as we've already discussed, can actually hurt you when they're too aggressive. Fear sells, though. Imagining that competitors are out there right now building spammy links to your site is a powerful motivator. Even if, in practice, most businesses aren't worth the effort of a negative SEO campaign. Nobody's spending money to spam links at a local bakery's website. Doesn't happen at that scale.

Here's the real question you should be asking: "is there any evidence that my backlink profile is actually causing problems?" Are your rankings declining? Is there a manual action in Search Console? Has your organic traffic dropped in a way that correlates with link-related algorithm updates? When the answer to all of those is no, you probably have better things to worry about.

A More Productive Way to Think About Links

Instead of obsessing over bad links, I'd rather see people focus on building good ones. Not sexy advice. Doesn't come with scary charts and red numbers. But the math is simple: with 100 good links and 20 bad ones, spending time removing the bad ones is way less impactful than going out and getting 50 more good ones. Your ratio improves either way, but building is more productive than removing. And it actually grows your site's authority rather than just maintaining it. To understand this better, take a look at Backlink Quality vs Quantity: What Matters More for SEO.

Create something worth linking to. Be a source that journalists cite. Build tools that people reference. Write the definitive guide on something in your niche. Get mentioned in industry roundups. Appear on podcasts. All of that generates links that make the occasional spam link completely irrelevant by comparison.

I know this section sounds like I'm telling you to eat your vegetables. And I kind of am. Vegetables work better than detox cleanses, though — in nutrition and in SEO. Most of the time, the best thing you can do for your link profile isn't subtraction. Addition wins.

One more thing. Inheriting a site — buying a domain, taking over an old project, whatever — is when a thorough backlink audit actually makes sense. You don't know what the previous owner did. Maybe they bought links. Maybe they were hit with a manual action that was never resolved. In that case, yeah, go through the whole process. Check Search Console for manual actions. Run the backlink audit. Look at the history. Clean up what needs cleaning. Even then, approach it calmly. Methodically. Not in a panic.

Same goes for after a major algorithm update. Traffic drops and you can see that Google rolled out a spam-related update? Reasonable to look at your link profile as one possible factor. One. Among many. Don't assume it's the links. Check your content. Check your technical SEO. Evaluate your competitor situation. Links are one signal among hundreds.

And sometimes rankings just drop and nobody knows why. That happens too. Algorithms are black boxes. We're all guessing, some of us more educated in our guessing than others, but still guessing. Anyone who tells you they know exactly how Google evaluates links is either lying or delusional. Or selling something. Probably selling something.