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wigolo-extract

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Local-first structured extraction from any webpage — tables, definition lists, key-value pairs, JSON-LD, microdata, chart hints (SVG titles / aria-labels / figcaptions), and metadata. Use when the user wants structured data, pricing tables, feature comparisons, or says "extract the table", "get structured data", "pull the pricing", "extract as JSON". For autonomous navigation across many pages, use wigolo's `agent` tool instead.

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wigolo extract

Structured data extraction beyond simple markdown.

Quick Reference

// Full structured extraction (ALWAYS prefer this)
{ "url": "https://bun.sh", "mode": "structured" }

// JSON Schema extraction — heuristic field matching
{ "url": "https://example.com/pricing", "mode": "schema", "schema": { "type": "object", "properties": { "name": { "type": "string" }, "price": { "type": "string" }, "sku": { "type": "string" } } } }

// CSS selector extraction
{ "url": "https://example.com", "mode": "selector", "css_selector": ".product-card", "multiple": true }

// Metadata only (matches fetch metadata shape)
{ "url": "https://example.com", "mode": "metadata" }

// From raw HTML
{ "html": "<table>...</table>", "mode": "tables" }

Modes

ModeWhat it extractsWhen to use
structuredTables + definition lists + JSON-LD + chart hints + key-value pairsDefault choice — use this
tablesHTML tables onlyWhen you specifically need only tables
schemaFields matching a JSON SchemaWhen you know the exact fields you want
metadataOpenGraph, meta tags, JSON-LD, canonical_url, og_imageFor page metadata only
selectorCSS selector matchesWhen you know the exact CSS selector

Always use mode: "structured" instead of mode: "tables". Structured captures everything tables does, plus definitions, key-value pairs, JSON-LD, and chart descriptions.

Chart Hints

When a page has visual charts (SVG, Canvas), chart_hints contains text descriptions extracted from aria-labels, SVG <title>, and figcaptions. Use these to describe visual data even when the underlying data is JavaScript-rendered.

Schema Mode

mode: "schema" does heuristic matching over CSS classes, ARIA labels, microdata, and JSON-LD — no LLM required. Pass { properties: { field: { type: "string" } } }.

Anti-Patterns

  • DON'T use mode: "tables" — use mode: "structured" instead.
  • DON'T pass a schema without properties key — handler rejects it.
  • DON'T extract for a whole page when you need markdown — use fetch instead.

When NOT to use wigolo-extract

  • Multi-page autonomous structured extraction — use wigolo's agent tool instead.
  • Page requires login / click / form-fill before the data appears — handle authentication with use_auth or interact with the page before extracting.

See Also