30x-seo-redirects

Installation

$npx skills add norahe0304-art/30x-seo --skill 30x-seo-redirects

Summary

This skill enables an agent to crawl or audit website redirects and identify SEO problems like redirect chains, loops, protocol mismatches, and soft 404s. Invoke when a user asks to audit redirects, diagnose ranking issues from migrations, or clean up redirect health.

SKILL.MD

Redirect Audit

What This Skill Does

Analyzes website redirects to find problems that hurt SEO and user experience.

Why Redirects Matter

  • Every redirect = delay: 301 redirects add 100-500ms latency
  • Chains lose link equity: Google follows max ~5 hops, then stops
  • Wrong type = lost ranking: 302 (temporary) doesn't pass full link juice
  • Loops = crawl waste: Googlebot hits loop, gives up, page not indexed

Check Categories

1. Redirect Chains

A redirect pointing to another redirect, pointing to another...

BAD:  /old → /old-2 → /old-3 → /final  (3 hops, slow, loses equity)
GOOD: /old → /final                     (1 hop, fast, full equity)

Rule: Maximum 1 redirect hop. More than 1 = fix immediately.

2. Redirect Loops

Page A redirects to B, B redirects back to A. Infinite loop.

BAD:  /page-a → /page-b → /page-a  (loop!)

Detection: Follow redirects up to 10 hops. If same URL appears twice = loop.

3. Redirect Type Audit

TypeWhen to UseSEO Impact
301Permanent movePasses ~95% link equity
302Temporary (A/B test, maintenance)Passes less equity, can cause issues if permanent
307Temporary (preserves HTTP method)Same as 302
308Permanent (preserves HTTP method)Same as 301
Meta refreshNEVER for SEOBad UX, slow, not recommended
JavaScript redirectAvoid if possibleGooglebot may not follow

Rule: Permanent moves must use 301 or 308. Using 302 for permanent = error.

4. Protocol Issues

BAD:  https://site.com → http://site.com  (downgrade, security warning)
BAD:  http → https → http                 (mixed, confusing)
GOOD: http://site.com → https://site.com  (upgrade, correct)

5. Domain Consistency

BAD:  www.site.com → site.com → www.site.com  (inconsistent)
GOOD: Pick ONE (www or non-www) and redirect all others to it

6. Trailing Slash Consistency

BAD:  /page → /page/ → /page  (loop risk)
GOOD: Pick ONE pattern (/page or /page/) and redirect all others

7. Post-Migration Orphans

After site migration/redesign:

  • Old URLs that redirect to 404 or homepage (should go to equivalent new page)
  • Important pages with no redirect (losing all link equity)

8. Soft 404s via Redirect

Redirecting deleted pages to homepage = soft 404 penalty risk.

BAD:  /deleted-product → /  (Google sees this as soft 404)
GOOD: /deleted-product → 410 Gone (or related category page)

How to Run Audit

Method 1: Crawl-based (recommended)

Use squirrel audit or similar crawler to:

  1. Crawl entire site
  2. Follow all internal links
  3. Record redirect chains

Method 2: Log-based (for large sites)

Analyze server access logs for:

  • All 301/302 responses
  • Most-hit redirect URLs
  • External referrers hitting redirects

Method 3: URL list

If you have a list of old URLs (from migration):

  1. Check each URL
  2. Record final destination
  3. Flag chains, loops, 404s

Output Format

Redirect Health Score: XX/100

Critical Issues (Fix Immediately)

Issue TypeCountExample
Redirect loopsX/a → /b → /a
5+ hop chainsX/old → ... → /new
HTTPS downgradeXhttps → http

High Priority (Fix This Week)

Issue TypeCountExample
3-4 hop chainsX/old → /mid → /new
302 used for permanentX/old-page 302→ /new-page
Soft 404 redirectsX/deleted → /

Medium Priority (Fix This Month)

Issue TypeCountExample
2 hop chainsX/old → /mid → /new
Inconsistent trailing slashX/page and /page/ both exist

Redirect Map

Top 20 most-accessed redirects and their chains:

Source URLHopsFinal DestinationTypeMonthly Hits

Recommendations

  1. [Specific fix instructions based on findings]

[PROTOCOL]: Update this header on changes, then check CLAUDE.md