10 Best Free Backlink Checker Tools

The best free backlink checker tools let you see who links to any website, which pages attract the most links, and what anchor text they use. Backlinks remain one of Google’s strongest ranking signals, so understanding a site’s link profile is essential for both competitive research and link building. The good news is that you do not need a pricey subscription to get useful backlink data. The free tools below reveal the top backlinks of any domain, with limits that are generous enough for most research tasks.

In this guide, we compared ten free backlink checkers on the size of their link indexes, the data they show for free, and their daily limits. You will learn which tool to use for quick competitor checks, which one is best for auditing your own links, and where each free plan cuts off. For context on why this data matters, read our guide on how backlinks help improve your SEO.

What the Best Free Backlink Checker Tools Should Show You

A useful free backlink checker shows more than a raw link count. Look for the linking domains, the authority of those domains, anchor text distribution, and whether links are dofollow or nofollow. The best free backlink checker tools also show which of your pages earn the most links and flag potentially toxic links worth reviewing. Free plans always limit how many rows you can see, usually the top 100 backlinks, so plan your research around those limits.

One important caveat: every tool crawls the web differently, so link counts vary between tools. Do not compare absolute numbers across tools. Instead, use one tool consistently for tracking, and use others for spot checks and competitor discovery. With that in mind, here are the ten best options available right now.

The 10 Best Free Backlink Checker Tools in Detail

1. Ahrefs Backlink Checker (Free)

Ahrefs offers a free version of its Site Explorer that shows the top 100 backlinks for any domain, along with Domain Rating and URL Rating scores. It runs on the same massive link index as the paid product, which is widely considered the freshest in the industry. For a free tool, the data quality here is unmatched, which is why it tops our list of the best free backlink checker tools.

Key features include the top 100 backlinks with anchor text, the top 5 pages by links, and domain-level authority metrics. The free version shows a sample rather than the full profile, and full access requires a paid plan starting at roughly $129 per month. It suits anyone doing competitor research or checking a prospect’s link profile before outreach. Run your top three competitors through it and you will quickly see the link gaps worth closing.

2. Google Search Console (Links Report)

Google Search Console includes a Links report that shows the sites linking to you most, your most linked pages, and your top anchor texts. The data comes straight from Google, so it reflects the links Google actually knows about. It is one of the best free backlink checker tools for auditing your own site because there are no sampling limits on your verified property.

Key features include exportable lists of up to 100,000 links, internal link reports, and top linking sites ranked by link count. It is completely free with no limits. It suits every site owner, and it is the first place to look when checking for spammy links pointing at your site. One limitation: it only shows data for sites you own, so you cannot use it for competitor research. For that, pair it with one of the other tools on this list.

3. Moz Link Explorer (Free Account)

Moz Link Explorer offers free backlink analysis with a free Moz account, showing Domain Authority, linking domains, and top pages. Moz’s link index is one of the oldest in the industry, and its Domain Authority metric is a widely used shorthand for site strength. It earns its place among the best free backlink checker tools for its accessible metrics and clean interface.

Key features include spam score analysis, anchor text reports, and discovered-and-lost link tracking. The free account allows a limited number of queries per month (typically around ten), with paid plans starting at roughly $99 per month. It suits beginners learning link metrics and anyone who wants a quick authority snapshot of a domain. Check the spam score of sites before you pursue links from them.

4. Ubersuggest Backlinks (Free Tier)

Ubersuggest includes a backlink overview that shows referring domains, backlink growth over time, and new versus lost links. The interface is beginner-friendly, with charts that make link velocity easy to understand at a glance. It is one of the best free backlink checker tools for small site owners who find enterprise tools intimidating.

Key features include historical backlink charts, top referring domains, and anchor text summaries. The free plan allows a limited number of searches per day, with paid plans starting at roughly $29 per month. It suits freelancers, bloggers, and small businesses monitoring their own link growth. Watch the new-versus-lost chart monthly: steady growth with few losses is the sign of a healthy profile.

5. Semrush Backlink Analytics (Free Account)

Semrush offers limited free access to Backlink Analytics, showing referring domains, authority scores, and anchor text for any domain. Semrush’s link index is huge and updated frequently, and its Authority Score gives a quick read on domain strength. It is one of the best free backlink checker tools for competitive analysis because the free tier still reveals a useful sample of any competitor’s profile.

Key features include backlink gap analysis, toxic link identification, and historical link data. The free account allows a limited number of reports per day, with paid plans starting at roughly $139.95 per month. It suits marketers doing competitor research and agencies evaluating link prospects. Use the free reports strategically on your most important competitors rather than burning them on casual checks.

6. Majestic (Free Site Explorer)

Majestic lets you run a free Site Explorer report on any domain, showing Trust Flow, Citation Flow, and a summary of backlink data. These two proprietary metrics are unique to Majestic: Trust Flow measures link quality based on proximity to trusted seed sites, while Citation Flow measures link quantity. Together they give a nuanced picture that raw counts miss, which is why Majestic belongs among the best free backlink checker tools.

Key features include the Trust Flow versus Citation Flow ratio, topical trust flow by category, and a free backlink history chart. The free version shows summary data only, with full reports requiring a paid plan starting at roughly $49.99 per month. It suits experienced SEOs evaluating link quality and anyone vetting domains before buying or partnering. A high Citation Flow with low Trust Flow is a classic red flag for spammy link profiles.

7. OpenLinkProfiler

OpenLinkProfiler is a completely free backlink checker that shows up to 1,000 backlinks per report, which is more generous than most free tools. It displays link influence scores, anchor texts, and the context of each link, and it lets you download reports as CSV files. For bulk free analysis, it is one of the best free backlink checker tools available.

Key features include 1,000 links per free report, link context snippets, and fresh link alerts. It is entirely free with no account required, supported by its parent company’s paid services. It suits researchers and SEOs who need to export large link lists without paying. The interface is dated, but the data export alone makes it worth bookmarking for deep-dive link audits.

8. Small SEO Tools Backlink Checker

Small SEO Tools offers a simple free backlink checker that shows total backlinks, referring domains, and basic domain metrics for any URL. There is no account needed and no daily hard cap advertised, which makes it one of the most accessible entries among the best free backlink checker tools. The trade-off is depth: you get summary numbers rather than detailed link lists.

Key features include instant results, no signup, and companion free tools (plagiarism checker, article rewriter, and more) on the same site. It is completely free, supported by ads. It suits quick checks and beginners who want a fast answer to “how many backlinks does this site have.” Use it for rough comparisons, then switch to Ahrefs or Moz when you need the actual linking domains.

9. SEO SpyGlass (Free Version)

SEO SpyGlass is desktop software that pulls backlink data and analyzes it for penalty risk. The free version finds backlinks for any domain and calculates a penalty risk score for each linking domain, which helps you spot toxic links. It stands out among the best free backlink checker tools for its risk analysis, a feature most free checkers skip entirely.

Key features include penalty risk assessment, anchor text analysis, and link intersection to find sites linking to competitors but not you. The free version limits project saving and some exports, with the paid version typically around $124.75 as a one-time license. It suits site owners recovering from penalties and SEOs doing detailed link audits. Run your own domain through it quarterly to catch risky links early.

10. BacklinkWatch

BacklinkWatch is a straightforward free tool that lists backlinks for any domain along with anchor text, PageRank-style metrics, and nofollow flags. It is basic compared to the enterprise tools on this list, but it is fast, free, and requires no account. It rounds out our best free backlink checker tools as a handy quick-check option.

Key features include anchor text display, outbound link counts per linking page, and nofollow identification. It is completely free. It suits beginners and anyone who needs a fast backlink glance without learning a complex dashboard. Treat its authority numbers as rough estimates, and verify important findings in a more robust tool before making decisions.

How to Use the Best Free Backlink Checker Tools for Link Building

Checking backlinks is only useful if it leads to action. Here is a practical workflow using the best free backlink checker tools to find real link opportunities without spending money.

Start by listing your five closest competitors. Run each through the free Ahrefs Backlink Checker and note their top 100 backlinks, focusing on referring domains rather than individual links. Look for patterns: resource pages, directories, guest posts, and podcasts that link to multiple competitors are proven link sources in your niche. Export or copy these prospects into a spreadsheet with columns for domain, link type, and contact status.

Next, check your own site in Google Search Console’s Links report and in Moz Link Explorer. Identify your most linked pages and your strongest anchor texts. Pages that already attract links are your best linkable assets: improve them, then pitch them to the prospects you found. Also review for toxic links using SEO SpyGlass’s penalty risk score or Moz’s spam score, and disavow the worst offenders if needed.

Finally, set up a monthly routine. Check new and lost links in Ubersuggest or Search Console, reclaim lost links by contacting the site owners, and monitor competitors for fresh links you can replicate. Link building is slow, compounding work, and these free tools give you everything needed to run it. When you are ready to scale outreach, our backlink building service and off-page SEO service pages explain how professional campaigns work, and our link building strategies guide covers the tactics in depth.

Once you have a prospect list, prioritize ruthlessly. A link from a real site with genuine traffic in your niche beats ten links from generic directories every time. Check each prospect’s own backlink profile with one of the best free backlink checker tools above before you pitch: if their Trust Flow is far below their Citation Flow, or their spam score is high, skip them. Quality control at the prospect stage saves you from toxic links that you would later need to disavow.

For deeper learning, Moz publishes beginner-friendly guides on link metrics like Domain Authority and spam score, while the Ahrefs blog offers data-driven studies on which link building tactics actually move rankings. Both are authoritative, independent of the tools on this list, and free to read. Make link prospecting a weekly habit: even two hours a week compounds into a powerful profile over a year.

Anchor text diversity deserves its own check while you are in these tools. A natural backlink profile mixes branded anchors, naked URLs, generic phrases like “click here,” and a minority of exact-match keywords. If one of the best free backlink checker tools shows that 60 percent of your anchors are exact-match commercial keywords, that is an over-optimization signal worth fixing through new branded link building rather than panic.

Conversely, when analyzing competitors, a diverse anchor profile on a high-ranking page tells you that authority and relevance, not anchor manipulation, are doing the heavy lifting, which is useful intelligence for your own strategy.

Frequently Asked Questions

Why do different free backlink checkers show different link counts?

Every tool crawls the web with its own bot, on its own schedule, and with its own rules for what counts as a link. Ahrefs may find links that Moz has not discovered yet, and vice versa. None of them sees exactly what Google sees. Treat each tool’s numbers as internally consistent but not comparable across tools. Pick one primary tool for tracking trends over time.

Are the best free backlink checker tools accurate enough for client work?

They are accurate enough for research, prospecting, and high-level reporting, but be transparent about limits. Free plans show samples (often the top 100 links), so present findings as samples rather than complete profiles. For formal link audits and disavow decisions on client sites, combine free data with Search Console, which shows your full known link list. Many freelancers deliver solid link research using only free tools.

How many backlinks do I need to rank on Google?

There is no fixed number. It depends on your niche’s competition, the quality of the linking domains, and the strength of your content. Ten links from authoritative, relevant sites can outperform a thousand low-quality links. Use the best free backlink checker tools to study what the top-ranking pages in your niche have, then aim to match or exceed their referring domain count with better-quality links.

Can free tools detect toxic or spammy backlinks?

Partially. Moz’s spam score, Majestic’s Trust Flow ratio, and SEO SpyGlass’s penalty risk score all flag suspicious patterns for free. Google Search Console shows you every link Google knows about, so you can manually review anything odd. No automated score is perfect, so always eyeball the actual linking pages before disavowing. When in doubt, a link from a real site with real traffic is fine, even if a metric looks odd.

How often should I check my backlinks?

Check monthly for active link building campaigns and quarterly for established sites. Monthly checks let you spot new links worth celebrating (and thanking), lost links worth reclaiming, and sudden spam spikes worth investigating. Set a recurring calendar reminder, spend thirty minutes in your favorite free checker, and log the totals in a spreadsheet. Consistent monitoring beats occasional deep dives.