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Tool features and prices below reflect what each vendor and independent review published as of late September 2026, the most current data available at the time of writing. This category’s pricing changes often, so confirm current figures on each vendor’s own page before buying.
A broken link checker is a tool that scans a website’s pages, or a specific external site, to find hyperlinks pointing to URLs that no longer resolve correctly, typically returning a 404 error or another failed status code. Broken links hurt both user experience, since a visitor hits a dead end, and SEO, since search engines treat them as a quality signal and crawl budget waste. Checkers range from free, single-page tools to full platforms that fold broken link detection into a broader technical SEO audit.
The short answer is that the right tool depends on site size, deployment preference, and whether broken link checking needs to run once or on an ongoing schedule. The nine tools below span free, no-signup checkers through enterprise-grade platforms, compared on what each one actually delivers rather than just a feature list.
Key Takeaways
Research into this category turns up a specific, recurring confusion: several comparison pages describe Ahrefs as offering a free broken link checker without clarifying what that free tier actually returns. The public-facing Ahrefs checker is genuinely free to use, but it returns sample or limited data rather than a full, comprehensive site crawl. Real, ongoing broken link detection on Ahrefs requires a paid Site Audit plan, with starting prices reported anywhere from $49 to $129 a month depending on the source, and enterprise tiers reaching roughly $999 a month for agencies managing multiple brands.
That gap matters because a reader comparing tools by price alone might assume Ahrefs offers a genuinely free, comprehensive option on par with Screaming Frog’s free tier, which actually does crawl up to 500 real URLs at no cost. The two free tiers are not equivalent, one is a full mini-audit, the other is closer to a sample preview of a paid product, and most roundups covering this topic do not draw that distinction clearly.
Three questions reveal what a tool’s free tier actually delivers before signing up expecting more.
A tool passing all three on its free tier, such as Screaming Frog up to its URL cap, offers a genuinely complete free option. A tool failing coverage or freshness, such as a free checker built mainly to preview a paid product, is worth using for a quick look but not as a substitute for the paid tier it is sampling.
A desktop crawler that remains the technical SEO standard for broken link audits, with the free version checking up to 500 URLs at no cost, a genuinely complete audit for a small site rather than a limited preview. The paid license, reported at roughly $259 a year depending on currency and source, removes the URL cap and adds custom extraction and deeper configuration. It requires local installation and uses the host computer’s processing power, which matters on very large sites.
Ahrefs covers broken link detection two ways: a free public checker that returns sample data, and a full crawl inside the paid Site Audit feature, part of plans reported starting between $49 and $129 a month across different sources. Its distinct advantage is checking broken backlinks, links pointing into a site from other domains, not just internal and outbound links, which dedicated link checkers typically do not cover.
A web-based tool offering free, no-signup scans alongside paid plans, reported from roughly $9.95 a month, that add scheduled automatic checks and multi-site monitoring. It suits teams that want recurring checks without the overhead of a full SEO suite, though its feature depth trails Screaming Frog or Ahrefs on larger, more complex sites.
A free WordPress plugin that scans a site’s own content for broken internal and outbound links directly inside the WordPress dashboard. It fits WordPress-only sites that want ongoing monitoring without adopting a separate external tool, though it offers nothing for sites built on other platforms.
Semrush folds broken link detection into its broader Site Audit module, alongside the rest of its technical SEO and content tooling. It suits teams already paying for Semrush for keyword research or competitive analysis who want link checking included rather than adding a separate dedicated tool, at the cost of being less specialized than a tool built solely for link checking.
A free, web-based checker that scans up to roughly 3,000 pages per site without requiring an account, pinpointing the exact code location of each broken link found. It works well for a fast, no-commitment check on a small to mid-sized site, though it lacks the scheduling and reporting features of paid, subscription-based tools.
A completely free, standards-based tool maintained around web specification compliance rather than SEO specifically, checking links at the code level alongside basic markup validation. It suits developers who want a technical, no-frills check rather than an SEO-oriented report with prioritization or business context attached.
A cloud-based checker offering free, on-demand scans with clean, exportable reports, plus paid monitoring plans reported from roughly $49 a year for ongoing, scheduled checks. It positions itself specifically around speed and simplicity rather than bundling link checking into a larger suite, which suits a team that wants exactly one job done well.
Built specifically for agencies and teams managing multiple client sites, offering real-time status checks, white-label PDF reports, and Slack alerts on broken links, priced from a $5 one-time check or roughly $9 a month for recurring use. Its real-time freshness is a specific advantage over tools that check against a crawl index that may already be somewhat out of date.
| Tool | Deployment | Starting Price | Best For |
| Screaming Frog | Desktop | Free to 500 URLs; paid from ~$259/yr | Technical SEOs wanting full crawl control |
| Ahrefs | Cloud suite | Free checker gives sample data only; paid Site Audit from ~$99-129/mo | Teams already paying for Ahrefs broadly |
| Dead Link Checker | Web-based | Free; automated plans from ~$9.95/mo | Quick one-time or lightly recurring checks |
| AIOSEO Broken Link Checker | WordPress plugin | Free | WordPress sites wanting on-site monitoring |
| Semrush Site Audit | Cloud suite | Paid, part of broader Semrush plans | Teams already standardized on Semrush |
| Online Broken Link Checker | Web-based | Free up to 3,000 pages | Fast, no-signup spot checks |
| W3C Link Checker | Web-based | Completely free | Code-level, standards-based checking |
| Broken Link Scan | Cloud-based | Free on-demand; paid monitoring from ~$49/yr | Clean reports with optional monitoring |
| Bulk URL Checker | Cloud-based | From $5 one-time or ~$9/mo | Agencies needing white-label, multi-client checks |
Screaming Frog’s free tier, capped at 500 URLs, gives the most complete free audit for a small site. For a fast, no-signup spot check on a specific page, the Online Broken Link Checker or W3C Link Checker both work well without any account.
The public-facing checker is free to use, but it returns sample or limited data rather than a full site audit. Comprehensive, ongoing broken link detection on Ahrefs requires a paid Site Audit plan, which several comparison pages do not make clear.
Reported starting prices range from $49 to $129 a month across different comparisons, with enterprise tiers reaching $999 a month for agencies managing multiple brands. Confirm current pricing directly on Ahrefs’ site, since broken link checking is bundled inside its Site Audit feature rather than sold separately.
Desktop tools like Screaming Frog use your own computer’s processing power and work offline once installed, which suits deep, one-off technical audits. Cloud-based tools run on remote servers, support scheduled automatic checks, and fit teams that want ongoing monitoring without managing local software.
Most dedicated checkers, including Screaming Frog, Dead Link Checker, and Online Broken Link Checker, scan for both internal links within a site and external outbound links pointing elsewhere. Ahrefs adds a third dimension: broken backlinks pointing into the site from other domains.
Monthly for most sites, with more frequent automated checks for large or frequently updated sites where links break faster than a manual schedule would catch. A one-time scan finds existing problems; recurring checks catch new ones as content and external sites change.
Fixing broken links protects link equity a site has already earned, but replacing a lost link with a genuinely useful new one still depends on outreach and relationships built off the page. Stay Digital Marketers works on that layer directly, including guest posting, press release distribution, SaaS backlinks, niche edits, multilingual backlinks, Wikipedia page creation, and Google Knowledge Panel creation, alongside complete SEO services, so a cleaned-up link profile sits on a site that keeps earning new, healthy links rather than just maintaining old ones.
Filza Taj is an MPhil in Human Resources-turned SEO Specialist, Content Strategist, and Digital Marketing Consultant with over 5 years of experience helping businesses in 30+ countries grow online. As the Founder of Stay Digital Marketers (staydigitalmarketers.com), she delivers results-driven solutions in link building, guest posting, PR distribution, niche edits, multilingual backlinks, and content marketing. She publishes daily SEO insights and actionable strategies to help brands strengthen their online presence, attract the right audience, and convert clicks into loyal customers.
Filza@staydigitalmarketers.com
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