Twitpic download script. Create 'twitpic' directory and make a list of ids as 'twitpics.json' like "["/6jbgg1","/5ryufc","/5hpuoq"]". Copyleft.

twitpic.js

var cheerio = require('cheerio');
var request = require('request');
var async = require('async');
var fs = require('fs');
var querystring = require('querystring');
var url = require('url');

var pics = JSON.parse(fs.readFileSync('twitpics.json'));
var skipped = [];

var twitpic = function (method, resource, params, callback) {
	var paramString = querystring.stringify(params);

	request({
		url: 'http://api.twitpic.com/2/' + resource + '.json' + '?' + paramString,
		json: true,
		method: method,
	}, callback);
};

async.eachLimit(pics, 3, function (pic, done) {
	var id = pic.slice(1);
	var viewPage = 'http://twitpic.com' + pic;
	var fullPage = viewPage + '/full';

	async.parallel([
		function (done) {
			twitpic('GET', 'media/show', {
				id: id
			}, function (error, response, data) {
				if (error) return done(error);

				console.log(id + ': info downloaded, ratelimit remains ' + response.headers['x-ratelimit-remaining']);

				// validate json file
				if (typeof data === 'undefined' || !data.id || !data.user || !data.timestamp) {
					return done(new Error(id + ': Invalid JSON'));
				}

				fs.writeFile('twitpic/' + id + '.json', JSON.stringify(data), done);
			});
		},
		function (done) {
			request(fullPage, function (error, response, body) {
				if (error) return done(error);

				try {
					var $ = cheerio.load(body);
					var imageURL = $('#media-full > img').attr('src');
					var resolvedURL = url.resolve(fullPage, imageURL);
					var parsedURL = url.parse(resolvedURL);
					var extension = parsedURL.pathname.match('\\.[^.]+$')[0];

					var ws = fs.createWriteStream('twitpic/' + id + extension);
					ws.on('error', done);
					ws.on('finish', function () {
						console.log(id + ': image downloaded');
						return done();
					});

					request(imageURL).pipe(ws);
				} catch (error) {
					return done(error);
				}
			});
		}
	], function (error) {
		if (error) {
			console.error(id + ': ' + error);
			skipped.push(pic);
		}

		return done();
	});
}, function (error) {
	if (error) {
		console.error(error);
	} else {
		console.log('Successful. Skipped: ' + JSON.stringify(skipped));
	}
});