website-scraper

Introduction

Download website to a local directory (including all css, images, js, etc.)

You can try it in demo app (source)

Installation

npm install website-scraper

Usage

var scraper = require('website-scraper');
var options = {
  urls: ['http://nodejs.org/'],
  directory: '/path/to/save/',
};

// with callback
scraper.scrape(options, function (error, result) {
	/* some code here */
});

// or with promise
scraper.scrape(options).then(function (result) {
	/* some code here */
});

API

scrape(options, callback)

Makes requests to urls and saves all files found with sources to directory.

options - object containing next options:

• urls: array of urls to load and filenames for them (required, see example below)
• directory: path to save loaded files (required)
• defaultFilename: filename for index page (optional, default: 'index.html')
• sources: array of objects to load, specifies selectors and attribute values to select files for loading (optional, see default value in lib/config/defaults.js)
• subdirectories: array of objects, specifies subdirectories for file extensions. If null all files will be saved to directory (optional, see example below)
• request: object, custom options for request (optional, see example below)
• recursive: boolean, if true scraper will follow anchors in html files. Don't forget to set maxDepth to avoid infinite downloading (optional, see example below)
• maxDepth: positive number, maximum allowed depth for dependencies (optional, see example below)

callback - callback function (optional), includes following parameters:

• error: if error - Error object, if success - null
• result: if error - null, if success - array if objects containing:
  • url: url of loaded page
  • filename: filename where page was saved (relative to directory)

Examples

Example 1

Let's scrape some pages from http://nodejs.org/ with images, css, js files and save them to /path/to/save/. Imagine we want to load:

• Home page to index.html
• About page to about.html
• Blog to blog.html

and separate files into directories:

• img for .jpg, .png, .svg (full path /path/to/save/img)
• js for .js (full path /path/to/save/js)
• css for .css (full path /path/to/save/css)

var scraper = require('website-scraper');
scraper.scrape({
  urls: [
    'http://nodejs.org/',	// Will be saved with default filename 'index.html'
    {url: 'http://nodejs.org/about', filename: 'about.html'},
    {url: 'http://blog.nodejs.org/', filename: 'blog.html'}
  ],
  directory: '/path/to/save',
  subdirectories: [
    {directory: 'img', extensions: ['.jpg', '.png', '.svg']},
    {directory: 'js', extensions: ['.js']},
    {directory: 'css', extensions: ['.css']}
  ],
  sources: [
    {selector: 'img', attr: 'src'},
    {selector: 'link[rel="stylesheet"]', attr: 'href'},
    {selector: 'script', attr: 'src'}
  ],
  request: {
    headers: {
      'User-Agent': 'Mozilla/5.0 (Linux; Android 4.2.1; en-us; Nexus 4 Build/JOP40D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Mobile Safari/535.19'
    }
  }
}).then(function (result) {
  console.log(result);
}).catch(function(err){
  console.log(err);
});

Example 2. Recursive downloading

// Links from example.com will be followed
// Links from links will be ignored because theirs depth = 2 is greater than maxDepth
var scraper = require('website-scraper');
scraper.scrape({
  urls: ['http://example.com/'],
  directory: '/path/to/save',
  recursive: true,
  maxDepth: 1
}).then(console.log).catch(console.log);