Free SEO & Link Tools

The Link Builder’s Free Toolkit. One Tab. No Signup.

Check a domain's history, read any page's link profile, catch broken links, and keep your backlinks alive. These are the same link building tools our team runs before placing a single link, now open to everyone, free.

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5
free tools, no paywall
0
signups required
114K+
vetted sites behind them
24/7
backlink monitoring
The toolkit

Every Free Tool, in One Place

Pick a tool, paste a URL, get your answer. Each of these SEO link building tools does one job cleanly, no dashboards to learn, no card to enter.

Link analysis
link-analyzer
Free

Link Analyzer

Read any page's link profile in one pass. Pull every internal and external link, then sort by type so you understand exactly how a page distributes its authority.

Best for auditing a page before you pitch it or link out to it.
Open tool
google-index-icon.svg
Free

Dofollow / Nofollow Checker

Know which links actually pass authority. Scan a page and see each link flagged as dofollow or nofollow, with sponsored and UGC tags called out too.

Verify a placement is dofollow before you approve or pay for it.
Open tool
tool-menu
Free

Broken Link Checker

Find the links that leak. Crawl a page to find 404s and dead redirects, so you can reclaim lost equity and stop sending visitors down dead ends.

One of the handiest link building tools for spotting niche-edit openings on any prospect.
Open tool
Domain research
domain-age-checker
Free

Domain Age Checker

Check a domain's real history straight from WHOIS. See its registration date, last update, and expiry in seconds, so you can judge a site before building a link to it.

A fast sanity check against freshly spun-up domains posing as authority sites.
Open tool
Monitor & prospect
google-index-icon.svg
Free

Backlink Monitoring Tool

Watch your links stay live. It checks your placed backlinks around the clock and pings you the moment one drops, changes anchor, or quietly turns nofollow.

One of the few free SEO link building tools that keeps working long after the link goes live.
Open tool
website-finder.svg
CHROME EXTENSION

Website Finder

Find guest post opportunities as you browse. Check website availability, SEO metrics, and link attributes instantly from your browser.

Turn browsing into faster link-building research. No copy, paste, or spreadsheets.
Get the extension
WHY THESE OVER THE REST

Built by Link Builders, for Link Builders

Most free SEO tools are a trial in disguise. Ours aren't. We built these link building tools as our own team needed accurate daily checks, so we opened them to everyone.

Instant, every time

Paste a URL, get your answer. No queue, no export wait, no daily cap counting down.

Genuinely free

No login, no card, no seven-day clock. Run them once or a hundred times a day.

Honest data

The exact checks we run before placing a link. What you see is what we'd act on.

One job, done well

No bloated dashboard to learn. Each tool answers one question, then gets out of your way.

The short version

A Free SEO Toolkit Built for One Job: Better Links

Plenty of sites give away free SEO tools. Few give away tools shaped by the daily work of actually building links. Every tool here maps to a real decision a link builder makes: is this site legit, does this link pass authority, is this page leaking equity, is my placement still live. Answer those fast, and the rest of your work gets easier.

Who These Tools Are For

These SEO link building tools are built for:

  • SEO agencies vetting sites before recommending them to a client
  • In-house teams auditing their own backlink profile for drops and nofollow surprises
  • Founders and marketers checking a prospect before spending on a placement
  • Affiliates and content teams hunting broken-link and niche-edit openings

How They Fit Together

Used alone, each tool answers a question. Used together, they form a quick link building workflow. Start with the Domain Age Checker to confirm a site has real history. Run the Link Analyzer and the Dofollow/Nofollow Checker to see how it handles outbound links. Point the Broken Link Checker at a target page to find gaps you could fill. Once a link is live, hand it to backlink monitoring, so you learn about a drop before your client does.

Frequently Asked Questions

Everything you need to know about our tools

Are these tools really free?

Yes. No login, no card, no trial timer. You can run any of these link building tools as often as you like. We created these tools to do our own job better, and now they're open to everyone.

How accurate is the data?

Very. Domain data is pulled live from WHOIS records, and link and status checks read the page exactly as it is right now. These are the same reads our team relies on before placing a link, built to be dependable, not decorative.

How do these tools help my link building?

Each one answers a decision you make while building links, whether a site is real, whether a link passes authority, whether a page is leaking equity, and whether your placement is still live. Together, they turn guesswork into fast, checkable answers.

Do I need a Link Publishers account?

Not for the tools, they're open to everyone. You only create an account when you want to place links or track them across saved projects. Signup takes under a minute, and your first link is on us.

Is there a limit on how many URLs I can check?

No cap. Check one domain or work through a full prospect list. These SEO link building tools are built for real research volume, not a quick taster.

Do the tools work with the platform?

Yes. Vet a site with the free tools, then place the same link when you're ready. Once it's live, backlink monitoring keeps an eye on it for you, so your research flows straight into results.

Done checking? Start building.

Turn your research into live links. Browse 114,000+ vetted sites, keep full control of anchors and budgets, and claim $25 in free credit on your first order.

Claim $25 & browse sites
Takes under a minute. No card required.