Analyze raw HTML you provide and get structured SEO data as JSON
Analyze raw HTML you provide and get structured SEO data as JSON: title, meta description, canonical, H1-H6 outline, links, JSON-LD blocks and structural checks (single H1, heading order, duplicates, JSON-LD validity). Use it to audit a page before publishing. No URL fetching, no JavaScript execution. Max 64 KiB of HTML.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
1408 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.coregroupimmo.com/v1/html/analyze
| Category | Code and developer |
|---|---|
| Provider host | api.coregroupimmo.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.003 | 1408 ms |
Example input (from the provider)
{
"body": {
"html": "<!doctype html><html><head><title>Apartment for sale in Aix-en-Provence</title><meta name=\"description\" content=\"Bright 3-room apartment\"><link rel=\"canonical\" href=\"https://example.com/aix-3-rooms\"></head><body><h1>3-room apartment</h1><h2>Features</h2><a href=\"/contact\">Contact</a></body></html>"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"html": {
"description": "Raw HTML document or fragment (max 64 KiB)",
"maxLength": 65536,
"minLength": 1,
"type": "string"
}
},
"required": [
"html"
],
"type": "object"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}