Screaming Frog Style On-Page SEO Auditor & Inspector

Professional SEO Analyzer & Audit Tool

Instantly audit any webpage source. Inspect Title & Meta Pixel Widths, Google SERP Snippets, H1-H6 Outline, Image Alt Accessibility, Inlinks/Outlinks, N-Gram Keyword Density, and export Screaming Frog compatible CSV reports.

Paste HTML Source Code or Upload File

Audits 100% of DOM signals without firewall blocks, proxy timeouts, or CORS limits.

Load Sample:
Drop your .html / .htm file here or Browse Computer Instant offline DOM parsing • Zero data stored on server
HTML Document Payload: 0 characters • 0 KB
Base URL:
Knowledge Base & Best Practices

The Professional On-Page SEO Ranking Signals Guide

Understand how Google Search crawlers, RankBrain, and Screaming Frog spiders evaluate your on-page source code.

1. Title & Meta Description Pixel Boundaries

Google desktop SERPs allocate approximately 580 pixels (around 55-60 characters) for page titles and 960 pixels (150-160 characters) for meta descriptions. Exceeding these limits truncates snippet text with ellipses (...), reducing organic CTR.

2. Strict H1-H6 Outline Hierarchy

Every indexable landing page should feature exactly one unique <h1> describing the primary topic. Sub-topics must follow an unbroken sequence into <h2> and <h3> tags without skipping levels.

3. Image Alt Accessibility (WCAG 2.1)

Descriptive alt text provides critical accessibility context for screen readers and acts as primary ranking anchor signals in Google Images search.

4. Schema.org JSON-LD Structured Data

Embedding valid JSON-LD schemas (such as Organization, Article, LocalBusiness, FAQPage, or Product) enables Google Rich Results snippets in search engine result pages.

SEO Audit Briefing

Frequently Asked Questions

Instant answers about in-browser technical SEO analysis and exports.

In-browser URL auditing tools often fail due to CORS browser limitations, Cloudflare anti-bot challenges, and proxy lag. Pasting the HTML source audits 100% of the DOM locally in your browser with zero network failure and zero privacy leakage.

The score begins at 100 points. Penalties are deducted based on severity: critical errors (missing Title, missing H1, duplicate H1, noindex directives) apply heavy deductions, while optimization recommendations deduct smaller point values.

Yes! Simply click the "Export CSV (Screaming Frog)" button at the top of your audit report to instantly download an industry-standard CSV with Title, Meta Desc, H1, H2, Word Count, Inlinks, Outlinks, and Image counts.

Yes, the analyzer automatically audits viewport configurations, canonical tags, Open Graph / Twitter Card protocols, and Schema.org JSON-LD microdata for rich search engine results.