analyze

package
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 Go to latest Published: Jul 29, 2026 License: MIT Imports: 2 Imported by: 0

Documentation

Overview

Package analyze defines the analyzer pipeline: the Issue/Severity types, the Analyzer interface every check implements, and a Registry to hold them. Analyzers consume a crawler.Result and emit Issues; they never fetch the crawl themselves. This single seam is how new SEO/SEA checks are added without touching the engine.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Analyzer 

type Analyzer interface {
	Name() string
	Description() string
	Analyze(ctx context.Context, result *crawler.Result) []Issue
}

Analyzer is a single check. Implementations must be safe for sequential reuse.

type Issue 

type Issue struct {
	Analyzer string         `json:"analyzer"`
	URL      string         `json:"url"`
	Severity Severity       `json:"severity"`
	Code     string         `json:"code"`
	Message  string         `json:"message"`
	Data     map[string]any `json:"data,omitempty"`
}

Issue is a single finding emitted by an analyzer.

func EachPage 

func EachPage(result *crawler.Result, fn func(p *crawler.Page) []Issue) []Issue

EachPage is a helper for per-page analyzers: it runs fn against every crawled page and concatenates the resulting issues.

func Run 

func Run(ctx context.Context, analyzers []Analyzer, result *crawler.Result) []Issue

Run executes the given analyzers over result and concatenates their issues.

type Registry 

type Registry struct {
	// contains filtered or unexported fields
}

Registry holds analyzers in registration order.

func NewRegistry 

func NewRegistry() *Registry

NewRegistry returns an empty Registry.

func (*Registry) All 

func (r *Registry) All() []Analyzer

All returns every analyzer in registration order.

func (*Registry) Get 

func (r *Registry) Get(name string) (Analyzer, bool)

Get returns the analyzer with the given name.

func (*Registry) Names 

func (r *Registry) Names() []string

Names returns analyzer names in registration order.

func (*Registry) Register 

func (r *Registry) Register(a Analyzer)

Register adds an analyzer. A later registration with the same name replaces the earlier.

func (*Registry) Select 

func (r *Registry) Select(enabled, disabled []string) []Analyzer

Select returns the analyzers to run given enabled/disabled allow/deny lists. If enabled is non-empty, only those run (in registration order); otherwise all run except any in disabled. Unknown names in enabled are ignored.

type Severity 

type Severity string

Severity classifies how important an Issue is. 

const (
	Info    Severity = "info"
	Warning Severity = "warning"
	Error   Severity = "error"
)

Source Files

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Directories

Path Synopsis
Package aeo assesses Answer Engine Optimization: how well a page is structured to be surfaced as a direct answer in featured snippets, "People Also Ask", and voice results.
 Package aeo assesses Answer Engine Optimization: how well a page is structured to be surfaced as a direct answer in featured snippets, "People Also Ask", and voice results.
Package amp implements AMP page detection, required-markup checks, and amphtml link validation against the crawled page set.
 Package amp implements AMP page detection, required-markup checks, and amphtml link validation against the crawled page set.
Package botwall detects when a crawl was served a CAPTCHA or bot-protection challenge instead of the real page — reCAPTCHA, hCaptcha, Cloudflare Turnstile, and the full-page interstitials of Cloudflare, DataDome, AWS WAF, PerimeterX/HUMAN, and Imperva Incapsula.
 Package botwall detects when a crawl was served a CAPTCHA or bot-protection challenge instead of the real page — reCAPTCHA, hCaptcha, Cloudflare Turnstile, and the full-page interstitials of Cloudflare, DataDome, AWS WAF, PerimeterX/HUMAN, and Imperva Incapsula.
Package consent audits how a site asks for, and behaves before, visitor consent to tracking.
 Package consent audits how a site asks for, and behaves before, visitor consent to tracking.
Package content implements cross-page content analysis: thin content and pages whose word count falls well below the crawl-wide average.
 Package content implements cross-page content analysis: thin content and pages whose word count falls well below the crawl-wide average.
Package datalayer audits Google Tag Manager / gtag wiring and the dataLayer event stream.
 Package datalayer audits Google Tag Manager / gtag wiring and the dataLayer event stream.
Package duplicates implements cross-page duplicate detection: identical body content, titles, and meta descriptions across the crawl.
 Package duplicates implements cross-page duplicate detection: identical body content, titles, and meta descriptions across the crawl.
Package geo assesses Generative Engine Optimization: whether AI answer engines (ChatGPT, Perplexity, Google AI Overviews, Gemini, Claude) can access the site and trust its content enough to cite it.
 Package geo assesses Generative Engine Optimization: whether AI answer engines (ChatGPT, Perplexity, Google AI Overviews, Gemini, Claude) can access the site and trust its content enough to cite it.
Package hreflang implements hreflang annotation validity, self-reference, x-default, and return-link reciprocity checks across the crawled page set.
 Package hreflang implements hreflang annotation validity, self-reference, x-default, and return-link reciprocity checks across the crawled page set.
Package httpx implements HTTP-level checks: status codes, redirect chains and loops, slow responses, and mixed content.
 Package httpx implements HTTP-level checks: status codes, redirect chains and loops, slow responses, and mixed content.
Package images implements image checks: missing alt text and missing width/height dimension attributes.
 Package images implements image checks: missing alt text and missing width/height dimension attributes.
Package landing assesses paid-campaign landing pages: how well the page's title and headings reflect the campaign keywords (utm_term / utm_campaign / utm_content), plus the quality-score signals ads care about (title, H1, meta description, indexability, HTTPS).
 Package landing assesses paid-campaign landing pages: how well the page's title and headings reflect the campaign keywords (utm_term / utm_campaign / utm_content), plus the quality-score signals ads care about (title, H1, meta description, indexability, HTTPS).
Package links implements link analysis: broken internal links, links to redirects, nofollow and external link reporting, and empty anchor detection.
 Package links implements link analysis: broken internal links, links to redirects, nofollow and external link reporting, and empty anchor detection.
Package pagination implements rel=next/prev pagination sequence detection and broken-target checks against the crawled page set.
 Package pagination implements rel=next/prev pagination sequence detection and broken-target checks against the crawled page set.
Package perf reports Core Web Vitals from headless-rendered pages.
 Package perf reports Core Web Vitals from headless-rendered pages.
Package robotscheck reports on robots.txt: presence, declared sitemaps, and crawled URLs that violate disallow rules.
 Package robotscheck reports on robots.txt: presence, declared sitemaps, and crawled URLs that violate disallow rules.
Package seaurl parses UTM campaign parameters from URLs.
 Package seaurl parses UTM campaign parameters from URLs.
Package security implements security checks.
 Package security implements security checks.
Package seo implements technical on-page SEO checks (title, meta, canonical, headings, language, viewport, charset, social tags).
 Package seo implements technical on-page SEO checks (title, meta, canonical, headings, language, viewport, charset, social tags).
Package sitemap discovers and parses sitemap.xml (including sitemap indexes) and cross-checks declared URLs against what was actually crawled.
 Package sitemap discovers and parses sitemap.xml (including sitemap indexes) and cross-checks declared URLs against what was actually crawled.
Package structured extracts and reports on JSON-LD structured data (schema.org).
 Package structured extracts and reports on JSON-LD structured data (schema.org).
Package tracking detects marketing and analytics tags on a page — Google Tag Manager, GA4, Universal Analytics, Google Ads, Meta (Facebook) Pixel, and a few others — and flags missing or duplicated installs.
 Package tracking detects marketing and analytics tags on a page — Google Tag Manager, GA4, Universal Analytics, Google Ads, Meta (Facebook) Pixel, and a few others — and flags missing or duplicated installs.
Package urls implements URL hygiene checks: uppercase letters, underscores, non-ASCII characters, and excessive length.
 Package urls implements URL hygiene checks: uppercase letters, underscores, non-ASCII characters, and excessive length.
Package utm audits UTM campaign tagging on a page's outbound links: partial tagging, empty or duplicated parameters, inconsistent key casing, and a per-page rollup.
 Package utm audits UTM campaign tagging on a page's outbound links: partial tagging, empty or duplicated parameters, inconsistent key casing, and a per-page rollup.
Package wordpress fingerprints WordPress sites and runs WordPress-specific checks that the generic analyzers do not name.
 Package wordpress fingerprints WordPress sites and runs WordPress-specific checks that the generic analyzers do not name.

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