Pricing

Free in your browser.
€4 when you want more.

Most FerrLens tools run client-side and stay free forever. Pro unlocks history, batch and the API — the kind of features you only want once you're using FerrLens daily.

Anonymous

€0 forever

Open the page, paste, get an answer. No account required for any tool that does not need to remember things between sessions.

Just use it

All browser-side tools (JWT, regex, cron, UUID, JSON, encoders)
Per-IP rate limit on the server-side tools (Lighthouse, DNS, headers)
No history, no saved checks
No batch, no API

Free

€0 with an account

Sign in once with your FerrLabs account. Your scans get a history page, your rate limits become per-user instead of per-IP.

Everything in Anonymous
Per-user rate limits (higher than anonymous)
Scan history — last 30 days
5 saved monitors (WHOIS expiry, TLS expiry)
100 API requests / month

Pro

€4 per month

For consultants, freelancers and small teams who run checks weekly. Removes the limits, unlocks batch and scheduled monitoring.

Start a 14-day trial

Everything in Free
Unlimited history
Batch — up to 50 URLs / domains at once
Scheduled checks (daily / weekly) with email + Slack alerts
Unlimited monitors (WHOIS, TLS, sitemap drift, SEO score drift)
10 000 API requests / month
Priority queue on Lighthouse runs

Team

€19 per month

Pro × 5 seats with a shared workspace, audit log and an admin role.

Start a 14-day trial

Everything in Pro
5 seats included (€4 per extra seat)
Shared workspace + monitors
Audit log
100 000 API requests / month
SAML SSO + SCIM

Enterprise

Higher quotas, a contract, your security team's questionnaire.

Custom rate limits, dedicated workers, audit log retention, DPA, regional hosting (EU / US), invoice billing. Plans start around €499 / month — we shape it around what you actually run.

Talk to sales →

A few questions you probably have

What counts as an API request?: One call to an api.ferrlens.com/v1/* endpoint that runs an actual check. Cached responses don't count.
What happens when I hit the limit?: Anonymous: 429 with a Retry-After. Free / Pro / Team: a soft-cap warning, the call goes through, you get a bill heads-up — never a hard stop in the middle of a workflow.
Can I self-host?: No. FerrLens is cloud-only — keeping it free anonymously only works if the back-end runs on our infra. The browser-side tools obviously work offline if you save the page.
Does paying for Pro help your other products?: A little — every FerrLabs subscription helps the whole portfolio. But Pro pays for itself on FerrLens infra alone; we don't cross-subsidise.