Holy SEO!

🔍 Holy SEO! — Your Private SEO Auditor Built Into the Browser

Check any page's SEO health in seconds. No signup, no limits, no data sent to external servers. Everything runs locally, right inside your browser.

Holy SEO! analyzes 20+ SEO factors and displays a health score from 0 to 100. Instantly see what's working, what needs fixing, and what's critical.

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WHAT DOES HOLY SEO! ANALYZE?

▸ Page title — length, presence, optimization (character limit with visual progress bar)
▸ Meta description — length, completeness, character counter
▸ Headings H1–H6 — hierarchy, skipped levels, empty headings, structure tree
▸ Links — internal, external, nofollow, empty anchors, total count
▸ Images — missing ALT attributes, thumbnail preview, filtering
▸ Social media — Open Graph tags, Twitter Cards, social share preview
▸ HTTP & redirects — status codes, redirect chains, loop detection, response time
▸ Technical — robots.txt, sitemap.xml, HTTPS, viewport, lang, charset, Schema JSON-LD, hreflang

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SMART KEYWORD ANALYSIS

Holy SEO! automatically extracts and categorizes keywords from any page:

✦ Primary keywords — highest SEO potential
✦ Secondary keywords — medium potential
✦ Long-tail phrases — 3–4 word combinations

The algorithm weighs keyword position (title, H1, meta description, URL, body) and calculates density. Supports stop-word filtering in 5 languages.

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9 ANALYSIS TABS

① Overview — SEO score, critical alerts, warnings, summary
② Headings — H1–H6 tree, hierarchy validation
③ Keywords — scored keywords with word cloud
④ Links — filter by type, highlight on page
⑤ Images — thumbnail grid, ALT / no ALT filter
⑥ Social — Open Graph & Twitter Card preview
⑦ HTTP — status codes, redirect chains, response headers
⑧ Technical — robots.txt, sitemap, Schema, hreflang, HTTPS
⑨ Tools — quick access to PageSpeed, GTmetrix, W3C, SSL Labs & more

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KEYBOARD SHORTCUTS

⌨ Alt+C — Character counter for selected text
⌨ Alt+H — Highlight headings on page
⌨ Alt+A — Show image ALT text
⌨ Alt+Shift+A — Highlight images without ALT
⌨ Alt+L — Link Grabber (select & copy links from page)

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WHY HOLY SEO?

✔ Works offline — local analysis, no data leaves your browser
✔ Instant results — no waiting for external APIs
✔ Clear scoring — 0–100 score with color-coded indicators
✔ 5 languages — English, Polish, German, Spanish, Russian
✔ Dark & light theme — auto-matches your system preference
✔ Free with no ads — open source, zero tracking

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WHO IS IT FOR?

- SEO specialists looking for a fast audit tool
- Website owners checking their optimization
- Copywriters reviewing meta tags and headings
- Developers verifying technical SEO
- Marketers analyzing competitor pages

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Holy SEO! is the only SEO tool you need for daily use. Install it and audit any page in 3 seconds.