Should I disavow toxic backlinks? Usually not. Google’s own help page says “most sites will not need to use this tool,” and that you should disavow only when you have “a considerable number of spammy, artificial, or low-quality links” that have caused, or likely will cause, a manual action. “Toxic” is a label from third-party SEO tools, not a Google verdict. So check Search Console’s Manual Actions report first; if it’s clear and you didn’t buy or build those links, leave the disavow tool alone.
Last updated 30 October 2026.
What “toxic backlinks” really means
When an SEO tool flags links as “toxic”, it’s giving you its own estimate. Each tool scores links its own way, usually from patterns like spammy anchor text, low-quality directories or sites that seem to exist only to link out. Those scores can be useful for spotting odd patterns. They aren’t Google’s opinion of your site.
Most people miss this, and it causes a lot of needless worry. If you’ve ever opened a backlink tool and seen hundreds of “toxic” links from strange foreign-language domains, you’re not alone. Almost every site that’s been online a while picks up links like that from scrapers and auto-generated pages. You didn’t ask for them, and in most cases you don’t need to do anything about them.
What Google’s disavow help page says
Google’s help page on disavowing links is short and worth reading in full. Here are the lines that matter most.
First, the warning: “This is an advanced feature and should only be used with caution. If used incorrectly, this feature can potentially harm your site’s performance in Google Search results.”
Second, the default answer: “In most cases, Google can assess which links to trust without additional guidance, so most sites will not need to use this tool.”
Third, the test. Google says you should disavow backlinks only if:
- “You have a considerable number of spammy, artificial, or low-quality links pointing to your site, AND”
- “The links have caused a manual action, or likely will cause a manual action, on your site.”
Notice the “AND”. Both conditions have to be true. A handful of odd links doesn’t qualify. Nor does a big pile of junk links when there’s no manual action and no realistic risk of one.
Fourth, the order of operations. Google says “you should try to remove the links from the other site to your site,” and only “If you can’t remove those links yourself, or get them removed, then you should disavow the URLs of the questionable pages or domains that link to your website.”
The page also gives a clue about when the risk is real: “you or an SEO that you’ve hired may have built bad links to your site via paid links or other link schemes that violate our spam policies.” Turns out that’s the key question. Did someone working for you build those links?
Should I disavow toxic backlinks? Check this report first
Before anything else, open Search Console and look at the Manual Actions report. Google’s Manual Actions report help says that “If your site has no manual actions, you’ll see a green check mark and an appropriate message.”
The manual action that concerns links is called “Unnatural links to your site.” Google describes it like this: “Google has detected a pattern of unnatural, artificial, deceptive, or manipulative links pointing to your site.” It adds that “Buying links or participating in link schemes in order to manipulate ranking in Google Search results is a violation of our spam policies.”
So the decision usually comes down to three questions:
- Is there a manual action for unnatural links? If yes, the disavow tool is part of the fix, after removal attempts.
- If not, did you (or someone you paid) buy or build manipulative links? If yes, a manual action is a real possibility, and cleaning up is reasonable.
- If neither, are the links just random spam you never asked for? Then honestly, the safest move is to do nothing.
If you do have a manual action: the clean-up steps
Google’s manual actions page sets out the steps for “Unnatural links to your site.” In practice it looks like this:
- Download your links from Search Console’s Links report. Google suggests that “If the list is large, start by looking at the sites that link to you the most, or links that were created recently (in the last few months).”
- Mark the links that break the link spam policy. Paid links without a sponsored label, exact-match anchors in guest posts, link exchanges, links from networks built for selling links.
- Ask for removal first. Google says to “contact the owner of that site and ask that they either remove the links or prevent them from passing PageRank, such as by adding a rel=”nofollow” or a more specific attribute.”
- Disavow only what you couldn’t remove. Google warns that “Blindly adding all backlinks to the disavow file is not considered a good-faith effort,” and “Make sure that you don’t disavow organic links to your site.”
- Request a review. When you’re done, select Request Review in the Manual Actions report, with “documentation about the links you’ve had removed and an explanation of any links you were unable to remove.”
How the disavow file works
If you do need it, the file format is simple. According to Google’s help page:
- “Specify one URL or domain to disavow per line.”
- To disavow a whole domain, prefix it with
domain:, for exampledomain:example.com. - “The file must be a text file encoded in UTF-8 or 7-bit ASCII” and “The file name must end in .txt”.
- Lines that start with
#are comments, and Google ignores them. - “You cannot disavow an entire subpath, such as example.com/en/”.
Two more details catch people out. “Uploading a new list for a property will replace any existing list for that property,” so always keep your old list and add to it. And the tool “does not support Domain properties,” so you need a URL-prefix property. When the upload works, “it can take a few weeks for Google to incorporate your list into the index.”
Don’t forget that “Disavowed links will continue to be shown in the Links report.” Seeing them there doesn’t mean the file failed.
A worked example: a SaaS tool with 600 “toxic” links
Here’s a made-up scenario. A small SaaS company runs a backlink audit and its tool flags 600 of its 2,400 backlinks as toxic, a quarter of the total. The founder panics and wants to upload all 600.
Step one: the Manual Actions report shows the green check mark. No manual action.
Step two: the team asks whether anyone built links for them. They find that two years ago a freelancer bought 40 guest posts with exact-match anchors, with no sponsored label. Those 40 links are the real risk, because they’re the kind of thing Google’s spam policy describes.
Step three: the other 560 flagged links are scraper sites and auto-generated directories nobody at the company ever touched. Google’s help page says that “In most cases, Google can assess which links to trust without additional guidance.” Those are left alone.
So instead of disavowing 600 links, the team writes to the 40 sites, asking for removal or a sponsored label. Say 25 respond and fix them. That leaves 15. Whether to disavow those 15 is a judgment call. With no manual action, many site owners would stop here and simply stop buying unlabelled links. If they do upload a file, it’s 15 lines, not 600. Skip the panic upload; it could remove good links along with the bad.
Lost backlinks: a different problem
A related worry is links that disappear. A lost backlinks checker (most backlink tools have one) tells you a link it saw before can’t be found now. That isn’t the same as the link being removed.
Moz’s help page on lost links puts it plainly: when a link is marked as lost, “our crawler attempted to recrawl that link and wasn’t able to. It doesn’t necessarily mean the link has been removed.” It lists the usual causes: the link was removed, updated or moved; the page was set to noindex; or the page had a server error or returned a 404. Moz suggests checking yourself by opening the source code of the referring page and searching for your link.
When you find a lost link that mattered, the fix happens on the other site: write to the editor. If you paid for the placement, the seller’s own rules decide what happens. Our Collaborator review notes a free three-month guarantee against deletion, and our fatjoe review covers its “Lifetime Link Guarantee”, both as read on 30 October 2026. A replaced paid link is still a paid link, so Google’s spam policy still applies: it should carry rel="sponsored" or nofollow.
Common disavow mistakes
Disavowing because a tool said “toxic”. A third-party score isn’t a manual action. Read Google’s two conditions again.
Disavowing everything. Google calls blindly adding all backlinks “not considered a good-faith effort,” and you could throw away good links along the way.
Skipping removal. Google asks you to try removal first. The disavow tool is for what’s left.
Uploading a new file that wipes the old one. A new upload replaces the existing list. Merge, then upload.
Treating disavow as permission to keep buying. It’s a clean-up tool. Google’s spam policies still list “Buying or selling links for ranking purposes” as link spam. If you want to know how to build links that never need disavowing, see our guide on how to find high quality backlinks.
FAQ: disavowing toxic backlinks
Should I disavow toxic backlinks if there is no manual action?
Usually not. Google says most sites won’t need the tool, and that it’s for a considerable number of spammy links that have caused, or likely will cause, a manual action. The exception is when you know you bought or built manipulative links yourself.
Can disavowing links hurt my site?
Yes, if you get it wrong. Google calls it an advanced feature and warns that, used incorrectly, it “can potentially harm your site’s performance in Google Search results.” Disavowing good, organic links is the most common way that happens.
How long does a disavow take to work?
Google says it can take a few weeks for your list to be incorporated, as it recrawls the web and reprocesses pages. There’s no instant effect, and disavowed links still show in the Links report.
What should a lost backlinks checker make me do?
First check the linking page yourself, because “lost” can mean a server error or a noindex tag, not removal. If the link really is gone and it mattered, contact the site’s editor. If you paid for it, check the seller’s replacement terms.
The short version
- Most sites don’t need the disavow tool; Google says so on its own help page.
- Disavow only when you have many spammy links and they’ve caused, or likely will cause, a manual action.
- Check the Manual Actions report first; a green check mark means no manual action.
- Try to get bad links removed, then disavow only what’s left, never your organic links.
- A lost link isn’t always a removed one; check the page before you act.