The disavow tool lets you tell Google to ignore specific links pointing at your site. It sounds like a safety net, so plenty of site owners upload a disavow file every few months "just in case". That's almost always unnecessary, and done carelessly it can throw away links that were helping you.
This guide covers what the tool does, the narrow situations where it helps, how to build the file, and how to upload it without tripping over the details that catch most people out.
Key takeaways
- Google says most sites don't need the disavow tool.
- Its main job is cleaning up after a manual action for unnatural links.
- Since 2016, Google mostly ignores spammy links on its own, so random low quality links rarely need disavowing.
- The tool doesn't support Domain properties in Search Console. You need a URL prefix property.
- Uploading a new file replaces the old one entirely, so always build on your existing list.
The short answer
Use the Google disavow tool only if you have a manual action for unnatural links, or a large number of spammy or paid links that are likely to cause one. Remove what you can first, then disavow what you couldn't get removed. For everyday low quality links from scraper sites, do nothing: Google already ignores them.
What the disavow tool does
A disavow file is a plain text list of URLs or domains you want Google to ignore when assessing links to your site. Once Google processes it, those links stop counting for or against you. They still appear in your Search Console Links report, because the tool changes how Google treats them, not whether they exist.
The context matters. Before 2016, Google's Penguin algorithm could demote whole sites for bad links, so disavowing was a routine defence. Penguin 4.0 changed that: it became part of the core algorithm and now mostly devalues spammy links individually rather than punishing the site. That's why the tool went from essential to niche.
When to use it
| Situation | Disavow? |
|---|---|
| Manual action for unnatural links to your site | Yes, after removal attempts, as part of the reconsideration request |
| You or a previous agency bought links or used a link network at scale | Yes, before it becomes a manual action |
| A clear negative SEO attack with thousands of new spam links and a matching drop | Probably, though Google usually ignores these on its own |
| A handful of odd links from scraper and directory sites | No |
| A tool flagged links as "toxic" | Not on that basis alone |
| Rankings dropped during a core update | No, links are rarely the cause |
Google's own guidance is blunt: disavow only if you have a considerable number of spammy, artificial or low quality links, and they've caused or are likely to cause a manual action. If you're not sure which kind of drop you're dealing with, start with my guide to manual actions vs algorithmic penalties.
When not to use it
The most common mistake I see is disavowing because a backlink tool gave a site a high "toxic score". Those scores are third party estimates. They routinely flag harmless links, including some that help, simply because the linking site looks unusual.
Disavowing a link that was passing value removes that value. Do it across dozens of domains and you can lower your own rankings with nothing to show for it. If you didn't buy links, haven't got a manual action and haven't seen a drop tied to a link spike, leave the file alone.
How to audit your links first
- Export your links. Search Console's Links report gives you the top linking sites. A backlink tool like Ahrefs or Semrush gives a fuller list.
- Filter for patterns, not single links. What you're looking for is the footprint of manipulation: paid guest posts on unrelated sites, sitewide footer links, exact match anchor text repeated across many domains, link networks, and obvious link sellers.
- Check them by eye. Visit the linking pages. A real site with real readers that happens to look low budget is not a spam link.
- Try removal first. For a manual action, email the site owners and ask for removal. Keep a record of every request and reply. Reviewers like to see that effort.
- Disavow what's left. Only the links you couldn't remove go in the file.
The disavow file format
The rules are strict, and an error means the whole upload is rejected:
- A plain text file ending in
.txt, encoded as UTF-8 or 7 bit ASCII - One URL or domain per line
- To disavow a whole domain or subdomain, prefix it with
domain: - Lines starting with
#are comments and get ignored - You can't disavow a subfolder such as a site's /blog/ section, only full URLs or whole domains
- Maximum 100,000 lines (blank and comment lines count) and 2MB
- Maximum 2,048 characters per URL
A short example:
# Link network found in audit, removal requests sent 12 Oct, no reply
domain:cheaplinksnetwork.example
domain:seodirectorypro.example
# Single paid post, owner refused removal
https://unrelatedblog.example/top-plumbers-2024/Use domain: for anything systematic. Listing individual URLs from a spam site misses the pages you didn't find.
How to upload it
This is where people get stuck, because of one limitation: the disavow tool doesn't support Domain properties. Most sites set up in recent years use a Domain property in Search Console, which covers http, https, www and non www together. The disavow tool won't accept those.
- Add a URL prefix property for your main version (for example https://www.yoursite.com) and verify it.
- Open Google's disavow tool and select that property. You need to be a property owner.
- Upload your .txt file. Any errors show immediately, and your previous list stays in place if they do.
- Check the scope. A list applies to the property it's uploaded to and its child properties. Http and https versions need separate lists.
Each property holds one list, and uploading a new file replaces the old one completely. If a previous agency uploaded a file years ago, download it first and add to it. Uploading a fresh short list silently undoes their entire disavow. Google's disavow documentation covers the full rules.
What happens after you disavow
Google says it can take a few weeks for a new list to take effect, as it recrawls and reprocesses the pages involved. Nothing changes overnight, and you won't get a confirmation beyond the successful upload.
If you're dealing with a manual action, the disavow file is one part of the reconsideration request, not the whole fix. Document what you found, what you removed, what you disavowed and what you've changed so it won't happen again.
And expect a rebuild. Links that were artificially propping up rankings stop counting once they're disavowed, so positions rarely bounce straight back. The value was never real. You replace it with genuine links, which is exactly what I did after the manual action in my penalty recovery case study.
To undo everything, select the property in the tool and use Cancel Disavowals. That also takes a few weeks to process.
FAQs
Do I need to use the Google disavow tool?
Probably not. Google says most sites don't need it. Use it if you have a manual action for unnatural links, or a large number of paid or manipulative links likely to cause one. Ordinary low quality links are already ignored.
Can disavowing links hurt my rankings?
Yes, if you disavow links that were genuinely helping you. That often happens when people disavow based on a tool's toxic score rather than evidence of manipulation.
Why can't I find my site in the disavow tool?
The tool doesn't support Domain properties. Add and verify a URL prefix property for your site in Search Console, then select that property in the disavow tool.
How long does a disavow take to work?
Google says it can take a few weeks after a successful upload, because it has to recrawl and reprocess the pages involved.
Does a new disavow file add to the old one?
No. Each property holds one list, and uploading a new file replaces the existing list completely. Download the current file first and add your new entries to it.
Where this leads
If this is the bit you want handled rather than explained:
- Penalty recovery. Link audits, removal outreach, disavow files and reconsideration requests, done properly.
- Digital PR and links. The clean links that replace what a disavow takes away.
- A free first pass. Send your manual action notice or your link export and I will tell you whether you need this at all.
