metadata_extract

Description:

metadata extract

Metadata Extract #
A dart library for extracting metadata in web pages. Supports OpenGraph, Meta, Twitter Cards, and Structured Data (Json-LD)
This version was forked from the original metadata_fetch.
Usage #
Extract Metadata for a given URL #
import 'package:metadata_extract/metadata_extract.dart';

main() async {
var data = extract("https://flutter.dev/"); // Use the extract() function to fetch data from the url

print(data.title) // Flutter - Beautiful native apps in record time

print(data.description) // Flutter is Google's UI toolkit for crafting beautiful...

print(data.image) // https://flutter.dev/images/flutter-logo-sharing.png

var dataAsMap = data.toMap();

}
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Parsing Manually #
Get aggregated Metadata from a document
This method prioritizes Open Graph data, followed by Twitter Card, JSON-LD and finally falls back too HTML metadata.
import 'package:metadata_extract/metadata_extract.dart';
import 'package:http/http.dart' as http;

void main () async {

// Makes a call
var response = await http.get('https://flutter.dev');

// Covert Response to a Document. The utility function `responseToDocument` is provided or you can use own decoder/parser.
var document = responseToDocument(response);


// get metadata
var data = MetadataParser.parse(document);
print(data);


}

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Get Open Graph Metadata
import 'package:metadata_extract/metadata_extract.dart';
import 'package:http/http.dart' as http;

void main () async {

// Makes a call
var response = await http.get('https://flutter.dev');

// Covert Response to a Document. The utility function `responseToDocument` is provided or you can use own decoder/parser.
var document = responseToDocument(response);


// get metadata
var data = MetadataParser.OpenGraph(document);
print(data);


}

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Get Html Metadata
import 'package:metadata_extract/metadata_extract.dart';
import 'package:http/http.dart' as http;

void main () async {

// Makes a call
var response = await http.get('https://flutter.dev');

// Covert Response to a Document. The utility function `responseToDocument` is provided or you can use own decoder/parser.
var document = responseToDocument(response);


// get metadata
var data = MetadataParser.HtmlMeta(document);
print(data);
}
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Get Structured Data (Json+LD)
import 'package:metadata_extract/metadata_extract.dart';
import 'package:http/http.dart' as http;

void main () async {

// Makes a call
var response = await http.get('https://flutter.dev');

// Covert Response to a Document. The utility function `responseToDocument` is provided or you can use own decoder/parser.
var document = responseToDocument(response);


// Just Json-ld schema
var data = MetadataParser.JsonLdSchema(document);
print(data);
}
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Get Twitter Cards Metadata
import 'package:metadata_extract/metadata_extract.dart';
import 'package:http/http.dart' as http;

void main () async {

// Makes a call
var response = await http.get('https://www.epicurious.com/expert-advice/best-soy-sauce-chefs-pick-article');

// Covert Response to a Document. The utility function `responseToDocument` is provided or you can use own decoder/parser.
var document = responseToDocument(response);


// Get Twitter Card metadata
var data = MetadataParser.TwitterCard(document);
print(data);
}
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Credit #
This library is a fork of https://github.com/jg-l/metadata_fetch which was inspired by
open_graph_parser. This fork has some minor bug fixes and has been
migrated to sound null-safety.
The name of the package has been changed to allow re-publishing on pub.dev.