What’s the best truly free backlink checker tool online

General
1

I’m trying to audit backlinks for a small site on a tight budget, but most tools lock useful data behind paywalls or strict limits. I’d really appreciate recommendations for reliable, genuinely free backlink checker tools that actually show enough data to make informed SEO decisions.

2

Short answer for a tight budget. There is no perfect fully free backlink tool, but you can stack a few and get decent coverage.

Start with these.

  1. Ahrefs Free Backlink Checker
    • URL: ahrefs dot com / backlink-checker
    • Shows top 100 backlinks per domain or page.
    • Gives DR, anchor text, dofollow/nofollow.
    • No account needed.
    Use it to see your strongest links and obvious spam.

  2. Ubersuggest free tier
    • URL: neilpatel dot com / ubersuggest
    • Need a free account.
    • Limited daily searches, but enough for a small site.
    • Shows referring domains, anchors, and new vs lost links.
    Use it a few days in a row and export or copy data before you hit limits.

  3. Seobility Backlink Checker
    • URL: seobility dot net / en / backlink-checker
    • Free, no login needed.
    • Up to 400 backlinks per check from their index.
    • Shows link strength and type.
    Good for a quick “is this domain spammy” scan.

  4. Google Search Console
    • URL: search dot google dot com / search-console
    • 100 percent free for your own site.
    • Under Links → External links, you see domains and pages linking to you.
    • Data comes straight from Google, though not every link appears.
    Export the lists, then plug suspicious domains into the tools above.

  5. SEO SpyGlass Free version
    • Desktop software from SEO PowerSuite.
    • Free version limits projects but still useful.
    • Pulls links from their index plus GSC integration.
    Use it when you want a more “all in one” audit without paying Ahrefs / Semrush prices.

Simple workflow for a small site.

  1. Connect site to Google Search Console.
  2. Export external links and referring domains.
  3. Run those domains through Ahrefs Free Backlink Checker and Seobility.
  4. Tag obviously spammy domains in a sheet.
  5. If you see malware, adult, casinos, or auto generated stuff, consider a disavow file.

You will miss some data without paying, but for a small site and basic audit this stack covers the important things without blowing your budget.

Sorry for typoos, typing fast.

3

Totally agree with @vrijheidsvogel that there’s no “perfect” free option, but I’d actually lean a bit differently on the stack so you’re not juggling 5 tools just to see who’s linking to you.

If you want to keep it as clean and cheap as possible, I’d focus on:

  1. Google Search Console + exports
    Yeah, it’s limited and weirdly incomplete sometimes, but for your own site it’s still the most “real” data you’ll get for free.

    • Go to Links → External links
    • Export both “Top linking sites” and “Top linked pages”
    • Use this as your main source of truth, not as an add-on like was suggested. Everything else should be used to enrich what GSC gives you, not the other way around.

  2. Bing Webmaster Tools
    This gets slept on hard.

    • Completely free, same idea as GSC
    • Sometimes shows links GSC doesn’t
    • Especially useful if your audience uses Edge / Bing a lot
      For a small site, GSC + Bing together can actually give you a pretty decent backlink picture without touching Ahrefs at all.

  3. Majestic free checks

    • Their full tool is paid, but their free checks via site explorer give you:
      • Trust Flow / Citation Flow
      • A sample of backlinks
        Use it more as a “quality indicator” than a comprehensive list. If a domain shows trash TF/CF or looks like a PBN farm, flag it.

  4. OpenLinkProfiler

    • Totally free web-based tool
    • Lets you see a good chunk of backlinks for a domain
    • You can filter by:
      • Link age
      • LIS (their link influence score)
      • Context (e.g., in content / blogroll / etc.)
        It’s not as cool or shiny as Ahrefs, but for a freebie it’s one of the better ones to get volume of links in one place.

  5. Monitor Backlinks alternatives
    Old Monitor Backlinks is basically gone for free users, but a couple of tools try to fill that gap:

    • RankWatch free backlink checker
    • LinkMiner free previews via Mangools (limited, but use it when you just need to quickly inspect a few domains)

How I’d keep it simple for a tiny site on a tight budget:

  1. Set up GSC + Bing Webmaster Tools
  2. Export all external links / referring domains from both
  3. Toss those domains into:
    • Majestic free checks for quality
    • OpenLinkProfiler for additional detail and context
  4. Create a sheet with: domain, type (real site / spam / unknown), and a short note
  5. Only bother with disavow if you’re seeing clearly toxic stuff at scale (adult, hacked, malware, spun garbage). Otherwise, don’t lose sleep.

Slight disagreement with the “use a bunch of freemium SaaS tools every day and copy data before you hit limits” part. That works, but it costs you a lot of time and you end up with fragmented data. For a small site, you’ll usually get more value spending that time building 5 legit links than squeezing the last 20 free rows out of yet another tool.

If you really want “one main free tool” to look at backlinks without logging into Google, I’d say:

  • Pick OpenLinkProfiler as your primary free checker
  • Use GSC/Bing as the “ground truth” underneath it

Not perfect, but actually workable without a subscription and without losing your mind.

4

Short version: there is no single “best” truly free backlink checker, but there is a sane way to avoid tool hell without just repeating what @vrijheidsvogel and others already laid out.

Instead of more of the same stack, I’d look at it like this:

1. Treat “truly free” as “good enough + predictable”

Most “free” checkers are:

  • Sampling a paid index
  • Capped by daily or monthly queries
  • Laggy on fresh links

So I’d stop hunting for a mythical unlimited backlink index and focus on tools that are:

  • Consistent in what they give you
  • Easy to export
  • Not trying to dark-pattern you into an upgrade every two clicks

That mindset matters more than whether Tool A has 10% more links than Tool B.

2. A different angle than @vrijheidsvogel: use fewer backlink tools and more page‑level signals

Where I slightly disagree with the “stack” approach is this: for a small site, obsessing about every linking domain is overkill. What often helps more is understanding which pages are pulling links and why.

So in addition to GSC / Bing / OpenLinkProfiler that were already mentioned, I’d layer in:

a) Free page‑level link context tools

Use tools that show:

  • Anchor text
  • Placement (body, footer, sidebar)
  • Rel attributes (nofollow, sponsored, UGC)

Many “free backlink checker” tools gloss over this and just give you a domain list, which is not very actionable. If you have to choose between:

  • 2 tools with fewer rows but good context
  • 5 tools with giant but messy exports

I’d pick the first. That saves you time and makes link cleanup / outreach decisions easier.

3. Where I’d push back a bit on “GSC is the main source of truth”

GSC is great, but for backlink audits it has issues:

  • It hides a lot of links
  • It gives almost no quality metrics
  • Sampling is opaque and can change over time

For a cleanup or risk check, you usually want:

  • Domain‑level pattern detection (same IP, same patterns in anchors)
  • Toxic TLD / language clusters
  • Sudden spikes in spammy anchors

You will not see that clearly in GSC. So rather than treating GSC as the single “ground truth,” I’d treat it as:

  • Canonical for which pages of your site are popular
  • A partial list of who links to you

Then let third‑party indexes tell you what type of links those are.

4. What to actually do with the free data you get

Whatever tools you pick, for a tiny site your workflow should be dead simple:

  1. Get referring domains and links from any 1 or 2 tools you like.
  2. Sort domains by:
    • Language
    • Anchor type (brand vs money keywords vs nonsense)
    • Link type (follow / nofollow)
  3. Flag:
    • Adult / pharma / casino
    • Auto‑generated blogs in weird languages
    • Hacked looking pages

This is less about finding “every” link and more about seeing if you have a pattern problem.

5. About “What’s the best truly free backlink checker tool online”

If you really want that phrase to make sense in practice, think of it this way:

The “best” truly free backlink checker for a small site is the one that:

  • Updates reasonably often
  • Lets you export without friction
  • Has at least basic quality metrics
  • Does not force 10 different captchas per session

Use that as your benchmark rather than chasing the biggest index.

Pros of focusing on a lean free stack:

  • Very low time cost
  • No subscription anxiety
  • Good enough for most small‑site audits

Cons:

  • You will miss some links, guaranteed
  • Hard to do super deep competitive analysis
  • Fresh links can appear with delay

6. On @vrijheidsvogel’s approach

I like the “don’t juggle 5 tools” stance and the point about not wasting hours milking freemium limits. Where I diverge is using GSC as the central backlink truth. I’d center decisions more on link patterns and page‑level context from whichever free checker you settle on, and use GSC / Bing mostly to see which of your pages are worth protecting and strengthening.

For a small site on a tight budget, that mindset usually matters more than whether Tool X shows 200 extra domains.