Run monthly link audits across every client at once. Paste an Ahrefs or Semrush backlink export, hit run, get a clean CSV of broken targets per client domain. No desktop install, no per-machine licence, no overnight crawls — large jobs complete in minutes on cloud workers.
Most desktop URL checkers were built for a single SEO inspecting their own site. Agency reality is different: 30 clients, dozens of backlink portfolios, monthly audits that need to ship the same week the data was pulled, and reports that have to look credible to non-technical clients.
Screaming Frog freezes on 50,000-URL backlink lists. Ahrefs' built-in broken-link tool batches one project at a time. Browser-based generic checkers tap out at a few thousand URLs. A workflow that takes 6 hours per client doesn't scale to 30 clients in a billing month.
A cloud-native bulk checker shifts the work off your machine. Paste the list, close the laptop, come back to a CSV. The next client's job runs in parallel. Bottlenecked by your judgment, not your hardware.
Pull a backlink export from Ahrefs, Semrush, Majestic, or Google Search Console. Drop the CSV in. We parse the URL column automatically and ignore everything else. Submit. The tool checks every link in parallel, follows redirect chains, distinguishes hard 404s from soft 404s, and reports response times.
Filter the results page by status group — broken / redirects / healthy — and download per-client CSV. Hand the broken set to your link-building team or paste it into your monthly audit deliverable.
Most agency tools charge per-seat or per-project. Both billing models punish you for adding clients. Per-URL credits scale linearly with the actual work — a small client with 500 backlinks costs less than a big client with 50,000, and the unit cost is what you can bill through.
Starter ($9/mo) gives 15,000 URLs per month — fits a small portfolio. Pro ($29/mo) gives 50,000 — fits most growing agencies. Agency ($99/mo) gives 200,000 — fits an established book. Credit packs ($9.99–$49.99 one-time) fill in any month where a single client needs more than the pool. Nothing locks you in.
Screaming Frog: desktop, ties up your machine, hard ceiling on RAM. We're cloud, no install, no machine limits.
Ahrefs broken-link tool: bundled inside a $99-$999/mo full SEO suite — you're paying for keyword research and competitor analysis whether you use them or not. We're a focused, priced-on-volume tool that does one job well.
Sitebulb: excellent for site crawls of your own domain. Slower fit for backlink-list workflows where you're checking thousands of external URLs across hundreds of different domains. Our domain-aware throttling makes that workflow fast.
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