# HTML Meta & JSON-LD Extractor (`stellar_ballet_0bu/html-meta-extractor`) Actor

Fetch public pages and extract <meta>, OpenGraph, Twitter card, and JSON-LD type information. Outputs structured per-URL rows for SEO audits and competitive intelligence.

- **URL**: https://apify.com/stellar\_ballet\_0bu/html-meta-extractor.md
- **Developed by:** [Nikita S](https://apify.com/stellar_ballet_0bu) (community)
- **Categories:** Developer tools, Other
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-usage

## What's an Apify Actor?

Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md):

```bash
npm install apify-client
```

In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md):

```bash
pip install apify-client
```

In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md):

````bash
# MacOS / Linux
curl -fsSL https://apify.com/install-cli.sh | bash
# Windows
irm https://apify.com/install-cli.ps1 | iex
```bash

In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md).

If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).


# README

## HTML Meta & JSON-LD Extractor

Fetch public pages and extract their **HTML meta tags, OpenGraph tags, Twitter card tags, and JSON-LD `@type` lists** in one structured pass. Built for SEO audits, content audits, and competitor research where you need a clean per-URL structured view of a page's metadata — without pulling the whole rendered DOM.

### What it does

- Pulls a list of public HTTP(S) URLs and returns one dataset row per URL.
- Extracts the standard meta block: `title`, `description`, `keywords`, `robots`, `canonical`, `viewport`, `charset`.
- Extracts all `og:*` OpenGraph properties (object).
- Extracts all `twitter:*` Twitter card properties (object).
- Walks the page for `<script type="application/ld+json">` blocks and returns the list of `@type` values plus the count.
- Records the final URL after redirects, the HTTP status, and a `truncated` flag if the body was cut at `maxBytes`.
- Pure data utility. Public pages only — no auth, no anti-bot bypass, no JS rendering.

### Who it is for

- **SEO / content teams** running quick content audits on a list of URLs.
- **Competitive intelligence** — pull meta + OG + Twitter + JSON-LD from a list of competitor pages.
- **Migration / launch QA** — verify meta tags are set correctly on a new build before going live.
- **RAG / knowledge-base curators** who need a quick structured view of what each page declares about itself.
- **Web researchers** building a dataset of declared metadata across many pages.

### Quick start

```json
{
  "urls": [
    "https://apify.com",
    "https://docs.apify.com"
  ]
}
````

Each row in the dataset looks like:

```json
{
  "url": "https://apify.com",
  "_kind": "meta",
  "finalUrl": "https://apify.com/",
  "status": 200,
  "truncated": false,
  "title": "Apify — Full-stack web scraping and data extraction platform",
  "description": "Apify is a full-stack platform for web scraping ...",
  "keywords": "web scraping, data extraction, automation",
  "robots": "index, follow",
  "canonical": "https://apify.com",
  "viewport": "width=device-width, initial-scale=1",
  "charset": "utf-8",
  "og": { "og:title": "...", "og:image": "...", "og:type": "website" },
  "twitter": { "twitter:card": "summary_large_image", "twitter:site": "@apify" },
  "jsonLdTypes": ["Organization", "WebSite"],
  "jsonLdCount": 2
}
```

#### Full input

| Field | Type | Default | Notes |
|---|---|---|---|
| `urls` | string\[] (required) | — | Public HTTP(S) page URLs. HTML only — JS-rendered pages are not supported. |
| `maxBytes` | int | `2000000` | Truncate the page body at this many bytes. |
| `timeoutSec` | int | `15` | Per-request HTTP timeout in seconds. |
| `followRedirects` | bool | `true` | Follow HTTP redirects. |

### Output

Dataset row kinds:

- `meta` — successful extract. Carries all HTML meta + OG + Twitter + JSON-LD.
- `error` — failed fetch. Carries `status` and `error` message.

`SUMMARY` key in key-value store: `{ urls, summaries: [{ url, ok, status, jsonLdCount, ogFields, twitterFields }, ...] }`.

### Pricing

This Actor is **Pay Per Event** on the Apify Store:

- `apify-actor-start` — flat per run.
- `page_processed` — charged once per URL successfully processed.

For local tests, `Actor.charge` is a no-op (no usage billed, no payout).

### Limits

- Designed for **public** HTML pages. Login-walled content, paywalls, and JS-rendered SPAs are out of scope.
- The Actor does not execute JavaScript — only what the server-side HTML contains.
- `maxBytes` truncates the body before parsing; very large pages may be missing trailing meta tags.

### FAQ

**Q: Does this run JavaScript on the page?**
A: No. It only parses server-rendered HTML. For JS-rendered pages use a headless-browser Actor.

**Q: My page returns 0 OG tags. Why?**
A: The page's HTML probably doesn't have any `og:*` properties. Confirm by viewing page source — if you don't see them there, this Actor won't find them.

**Q: How does this differ from `og-meta-validator`?**
A: `html-meta-extractor` is a broad pull of all meta/OG/Twitter/JSON-LD. `og-meta-validator` focuses on validating a single OpenGraph spec (required fields, image dimensions, type allow-list) and is best used as a QA check on a small number of pages.

**Q: Can I use it on a private/intranet site?**
A: Only if the Actor host can reach it without auth and over plain HTTP(S). The Actor does not handle cookies, headers, login, or anti-bot challenges.

**Q: Does it support sitemap batch input?**
A: Not directly. Pipe in the URL list you get from `sitemap-delta-monitor` (public) or `sitemap-news-sitemap-extractor`.

### Related Actors

- [`og-meta-validator`](https://apify.com/stellar_ballet_0bu/og-meta-validator) — strict OpenGraph spec validation with required-field and image-dimension checks.
- [`jsonld-extractor-validator`](https://apify.com/stellar_ballet_0bu/jsonld-extractor-validator) — extract and validate JSON-LD blocks per URL.
- [`html-link-classifier`](https://apify.com/stellar_ballet_0bu/html-link-classifier) — classify anchor links on a page (internal / external / nofollow / sponsored / ugc).
- [`sitemap-delta-monitor`](https://apify.com/stellar_ballet_0bu/sitemap-delta-monitor) — discover URLs to feed into this Actor.
- [`schema-product-delta-monitor`](https://apify.com/stellar_ballet_0bu/schema-product-delta-monitor) — monitor product page schema changes.

### Support

Open an issue on the Actor's Apify Store page (`Report an issue` link on the right rail) or contact the developer through the Store profile.

### License

MIT — see Apify Store page for the canonical text.

# Actor input Schema

## `urls` (type: `array`):

Public HTTP(S) page URLs to inspect. HTML only — JS-rendered pages are not supported.

## `maxBytes` (type: `integer`):

Truncate the page body at this many bytes to avoid pulling huge HTML pages.

## `timeoutSec` (type: `integer`):

Abort a fetch after this many seconds.

## `followRedirects` (type: `boolean`):

If true (default), follow up to 5 HTTP redirects before reading the body.

## Actor input object example

```json
{
  "urls": [],
  "maxBytes": 2000000,
  "timeoutSec": 15,
  "followRedirects": true
}
```

# Actor output Schema

## `rows` (type: `string`):

One row per processed URL with \_kind='meta' (url, finalUrl, status, truncated, title, description, keywords, robots, canonical, viewport, charset, og{}, twitter{}, jsonLdTypes\[], jsonLdCount) or \_kind='error' (url, status, error).

## `summary` (type: `string`):

Run summary with urls count and per-URL summaries (url, ok, status, jsonLdCount, ogFields, twitterFields).

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("stellar_ballet_0bu/html-meta-extractor").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("stellar_ballet_0bu/html-meta-extractor").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call stellar_ballet_0bu/html-meta-extractor --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=stellar_ballet_0bu/html-meta-extractor",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

```json
{
    "openapi": "3.0.1",
    "info": {
        "title": "HTML Meta & JSON-LD Extractor",
        "description": "Fetch public pages and extract <meta>, OpenGraph, Twitter card, and JSON-LD type information. Outputs structured per-URL rows for SEO audits and competitive intelligence.",
        "version": "0.2",
        "x-build-id": "PiVCHRvdllJZbaU3d"
    },
    "servers": [
        {
            "url": "https://api.apify.com/v2"
        }
    ],
    "paths": {
        "/acts/stellar_ballet_0bu~html-meta-extractor/run-sync-get-dataset-items": {
            "post": {
                "operationId": "run-sync-get-dataset-items-stellar_ballet_0bu-html-meta-extractor",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        },
        "/acts/stellar_ballet_0bu~html-meta-extractor/runs": {
            "post": {
                "operationId": "runs-sync-stellar_ballet_0bu-html-meta-extractor",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor and returns information about the initiated run in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/runsResponseSchema"
                                }
                            }
                        }
                    }
                }
            }
        },
        "/acts/stellar_ballet_0bu~html-meta-extractor/run-sync": {
            "post": {
                "operationId": "run-sync-stellar_ballet_0bu-html-meta-extractor",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        }
    },
    "components": {
        "schemas": {
            "inputSchema": {
                "type": "object",
                "required": [
                    "urls"
                ],
                "properties": {
                    "urls": {
                        "title": "Page URLs",
                        "type": "array",
                        "description": "Public HTTP(S) page URLs to inspect. HTML only — JS-rendered pages are not supported.",
                        "default": [],
                        "items": {
                            "type": "string"
                        }
                    },
                    "maxBytes": {
                        "title": "Max bytes per page",
                        "type": "integer",
                        "description": "Truncate the page body at this many bytes to avoid pulling huge HTML pages.",
                        "default": 2000000
                    },
                    "timeoutSec": {
                        "title": "Per-request timeout (seconds)",
                        "type": "integer",
                        "description": "Abort a fetch after this many seconds.",
                        "default": 15
                    },
                    "followRedirects": {
                        "title": "Follow redirects",
                        "type": "boolean",
                        "description": "If true (default), follow up to 5 HTTP redirects before reading the body.",
                        "default": true
                    }
                }
            },
            "runsResponseSchema": {
                "type": "object",
                "properties": {
                    "data": {
                        "type": "object",
                        "properties": {
                            "id": {
                                "type": "string"
                            },
                            "actId": {
                                "type": "string"
                            },
                            "userId": {
                                "type": "string"
                            },
                            "startedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "finishedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "status": {
                                "type": "string",
                                "example": "READY"
                            },
                            "meta": {
                                "type": "object",
                                "properties": {
                                    "origin": {
                                        "type": "string",
                                        "example": "API"
                                    },
                                    "userAgent": {
                                        "type": "string"
                                    }
                                }
                            },
                            "stats": {
                                "type": "object",
                                "properties": {
                                    "inputBodyLen": {
                                        "type": "integer",
                                        "example": 2000
                                    },
                                    "rebootCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "restartCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "resurrectCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "computeUnits": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "options": {
                                "type": "object",
                                "properties": {
                                    "build": {
                                        "type": "string",
                                        "example": "latest"
                                    },
                                    "timeoutSecs": {
                                        "type": "integer",
                                        "example": 300
                                    },
                                    "memoryMbytes": {
                                        "type": "integer",
                                        "example": 1024
                                    },
                                    "diskMbytes": {
                                        "type": "integer",
                                        "example": 2048
                                    }
                                }
                            },
                            "buildId": {
                                "type": "string"
                            },
                            "defaultKeyValueStoreId": {
                                "type": "string"
                            },
                            "defaultDatasetId": {
                                "type": "string"
                            },
                            "defaultRequestQueueId": {
                                "type": "string"
                            },
                            "buildNumber": {
                                "type": "string",
                                "example": "1.0.0"
                            },
                            "containerUrl": {
                                "type": "string"
                            },
                            "usage": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "integer",
                                        "example": 1
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "usageTotalUsd": {
                                "type": "number",
                                "example": 0.00005
                            },
                            "usageUsd": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "number",
                                        "example": 0.00005
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
```