Rules Reference

All 221 audit rules organized by category

squirrelscan includes 221 rules across 20 categories. Each rule checks for specific SEO, accessibility, performance, or security issues.

Categories

Essential meta tags and page structure for search engines (13 rules)

Text quality, readability, and content structure (12 rules)

Internal and external link health and structure (13 rules)

Image optimization and accessibility (14 rules)

Structured Data

Structured data and rich snippet eligibility (10 rules)

HTTPS, headers, and safe link practices (14 rules)

Accessibility for users with disabilities (59 rules)

Internationalization

Language declarations and multi-region support (2 rules)

Content quality signals for AI/LLM systems (0 rules)

Page speed and loading performance (24 rules)

Open Graph and social sharing metadata (4 rules)

Robots.txt, sitemaps, and crawl directives (17 rules)

URL structure, length, and formatting (8 rules)

Mobile-friendliness and responsive design (6 rules)

Legal Compliance

Privacy policy and legal compliance signals (3 rules)

Local business schema and NAP consistency (3 rules)

Video content markup and accessibility (3 rules)

Tracking and measurement implementation (2 rules)

Experience, expertise, authority, trust signals (14 rules)

Adblock Detection

Detection of content blocked by ad blockers (0 rules)

Configuration

Enable/Disable Rules

Use glob patterns in squirrel.toml:

squirrel.toml

toml

[rules]
# Enable specific rules or categories
enable = ["*"]  # all rules (default)

# Disable specific rules
disable = [
  "ai/*",           # disable all AI rules
  "content/word-count",  # disable specific rule
]

Rule Options

Some rules have configurable options:

squirrel.toml

toml

[rules."core/meta-title"]
min_length = 30
max_length = 60

[rules."content/word-count"]
min_words = 300

See individual rule pages for available options.