SEO Toolkit
Get found, and stay fast.
Audit a page, measure real-world performance, catch broken links before your visitors do, and check the records your domain depends on.
Everything for SEO and site health
Real audits against live data — not checklists, and no account required.
SEO Audit Tool
Score a page across title, meta, headings, images, technical and performance checks — with click-through fix instructions for every issue.
Demo preview — illustrative results, not a live audit.
Open SEO Audit (Demo)Site Checkup
Type any website address and get one plain-English report: the padlock, speed, search basics, broken links, security settings, mobile, domain expiry and email health.
Real checks, run live. SSL and speed are in beta while we improve them.
Open Site CheckupPage Speed Test
Run a real performance audit of any URL — Core Web Vitals, network waterfall, resource and third-party analysis, plus prioritised recommendations.
Real audit — powered by PageSpeed Insights, with a direct-probe fallback.
Open Page Speed TestBroken Link Checker
Scan a site for broken links, redirects and missing pages — with a link health score and a suggested fix for every issue.
Real scan — checks every link's live HTTP status.
Open Broken Link CheckerDNS Checker
Look up any domain’s records, see whether resolvers worldwide agree, and review SPF, DMARC, MX, DNSSEC and TLS — with a plain-English fix for every issue.
Real lookups — queries six public resolvers live.
Open DNS CheckerContent Readability Analyzer
Score any piece of writing for readability, spot the issues holding it back, and get sentence-level rewrite examples.
Real audit — powered by our readability API, with a deterministic simulation fallback.
Open Readability AnalyzerQuill — Blog Prompt Builder
Assemble a ready-to-paste content prompt from a topic bank and a short brief — built for drafting FastSites blog posts.
Internal content tool — static, works offline, no data leaves your device.
Open QuillKeep exploring
The rest of the FastSites toolkit is a click away.
Ready to build your site?
Every one of these tools ships with FastSites — and your site can be live in days.
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