Inspector

The deepest technical SEO & web performance audit you can run on any URL

Inspector runs 150+ rules across technical SEO, Core Web Vitals, security, infrastructure, and availability - in parallel - so no issue stays hidden. Paste any public URL, pick mobile or desktop, and in under a minute you get a single 0-100 Inspector Score, detailed charts and waterfalls, raw data from every check, and a prioritized fix list written for engineers.

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Rules evaluated
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Weighted pillars

Trusted by teams at

TechSEO VitalsTouchIT

Reviewed on

G2
Inspector

150+ checks. 6 parallel data sources. One score.

Real-user CrUX data, a full Chrome lab audit, uptime, SSL, WHOIS, and robots.txt verdicts - every rule evaluated, every issue surfaced, every recommendation written for the team that will ship the fix.

VitalSentinel Inspector on-demand URL audit

The issues that tank rankings and performance love to hide

Render-blocking scripts. Post-JS noindex flips. Missing security headers. Expired certificates. Mixed content. Lighthouse alone won't catch them, and neither will your field-data dashboard. Inspector runs every check in parallel so nothing stays hidden.

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Lighthouse reports miss server-side issues like SSL, WHOIS, and robots.txt

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Field-data tools only show what real users already saw - never what Google might see next crawl

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Technical SEO regressions (post-JS noindex flips, robots.txt blocks) hide behind clean-looking pages

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Lab wins don't always show up in CrUX - and CrUX wins don't always hold up in the lab

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Every extra tool means another tab, another login, another report to reconcile

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Audit PDFs are useless when engineers need a one-line fix with evidence attached

Capabilities

What you can monitor

Popular

Inspector Score (0-100)

A single weighted score across five pillars: Performance (40), SEO (25), Security (20), Infrastructure (10), and Availability (5) - so you can see health at a glance and drill into any pillar.

Six Parallel Checks

CrUX field data, Chrome headless lab audit, uptime, SSL, WHOIS, and robots.txt - all run in parallel against any public URL.

CrUX Field Data

Real-user p75 Core Web Vitals pulled from Google Chrome over the last 28 days: LCP, INP, CLS, FCP, and TTFB across device types.

Chrome Lab Audit

Headless Chromium load that captures lab Core Web Vitals, rendering filmstrip, network waterfall, metadata, structured data, security headers, and console errors.

SSL & WHOIS

Certificate validity, issuer, TLS protocol version, and chain completeness alongside domain registrar, expiry, and nameserver details.

robots.txt Analysis

Parses robots.txt to verdict whether the URL is crawlable by search engines and AI bots - including post-JavaScript directive changes.

Prioritized Issues Panel

150+ issue rules across performance, SEO, security, infrastructure, and availability - sorted by severity, base deduction, and estimated savings.

Severity & Fatal Penalties

Critical, Warning, and Info tiers with diminishing-returns deductions. Fatal issues like expired SSL or noindex apply a cross-pillar 15% multiplier - so you can never A-grade a broken page.

Historical Comparison

Results are retained for 12 months. Re-run the same URL and see exactly which metrics and issues moved between inspections.

Any URL, No Domain Setup

Audit any URL on the public internet - competitors, staging, client prospects, or sites you don't own. No domain registration, no tracking script, no DNS verification required.

Mobile or Desktop

Pick the device profile that matches how your users (or Google) experience the page. Toggle and re-run in seconds.

Engineer-Ready Recommendations

Every issue ships with raw triggering evidence and a recommendation that points at the subsystem to fix - written for the team that will ship the change.

Quick Setup

Paste a URL, get the verdict

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Paste any public URL

No tracking script, no domain verification, no DNS changes. Works for competitors, staging environments, and client prospects - anything on the public internet.

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Pick mobile or desktop

Choose the device profile that matches your audience. Inspector runs a fresh Chromium session against that profile.

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Six checks run in parallel

CrUX, Chrome lab audit, uptime, SSL, WHOIS, and robots.txt all execute simultaneously - typically complete in under a minute.

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Review score, charts, and issues

Get the 0-100 Inspector Score, pillar breakdowns, waterfall, filmstrip, CrUX and lab metric charts, then work the prioritized issues panel filtered by severity or category.

Total setup time: ~5 minutes
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Deep Coverage

What Inspector uncovers

150+ rules that catch the technical SEO and performance issues single-tool audits miss

Slow LCP from heavy images or render-blocking resources
High INP driven by long tasks and main-thread contention
Expired, mismatched, or soon-to-expire SSL certificates
noindex directives and robots.txt blocks hiding pages from Google
Missing or duplicate titles, meta descriptions, and heading structure
Mixed content and missing security headers (CSP, HSTS, X-Frame-Options)
Unused JavaScript, CSS, and oversized page weight
5xx, 404, and unexpected redirect chains on critical URLs
Rich result eligibility gaps from malformed structured data
Compression, caching, and HTTP/2+ configuration misses
robots directive changes after JavaScript execution
Console errors captured during the headless load
Use Cases

Real scenarios, real solutions

SEO professionals
Challenge

"A prospect asks you to audit their site before the first call - you need a defensible overview, not a 40-tab deep dive."

Solution

Run Inspector, screenshot the score and top critical issues, and walk into the call with a concrete punch list ready.

Web developers
Challenge

"Staging is up and you want a sanity check before merging - but you don't want to wire monitoring to a URL that'll be gone next week."

Solution

Paste the staging URL into Inspector. Catch regressions, missing headers, or a broken robots.txt before the release goes live.

Agencies
Challenge

"A new lead wants to know "how bad is it?" You need an answer in minutes, with evidence they can't argue with."

Solution

Inspector produces a single Inspector Score plus a prioritized issues list - the kind of artifact that turns a discovery call into a signed proposal.

Site owners
Challenge

"You suspect something changed after a recent deploy but you don't have time to dig through five dashboards."

Solution

Re-run Inspector on the impacted page. The 12-month history shows exactly which metrics or issues moved between runs.

Free plan availableNo credit card requiredGDPR compliant

Uncover every issue on any URL in under a minute

The deepest technical SEO and web performance audit you can run on demand. No tracking script, no domain verification - paste any public URL and see every fixable issue, with evidence engineers can act on. Free plan includes 3 inspections every month.

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Trusted by teams who can't afford to find out late