Firefox Scraper
Web Scraper – Get this Extension for Firefox (en-US)
Web Scraper is built on modular selector engine. When setting up a scraper (Sitemap) you can use different types of selectors to tailor the scraper for a specific are some of the things that you can do with selectors:
Website navigation with Link SelectorsMultiple record extraction from a single page with Element SelectorsData extraction with Text, Element Attribute, Image, Table SelectorsAdditional data loading with Element click, Element scroll down Selectors tutorialsDocumentationForumPrivacy PolicyHow are you enjoying Web Scraper? If you think this add-on violates Mozilla’s add-on policies or has security or privacy issues, please report these issues to Mozilla using this don’t use this form to report bugs or request add-on features; this report will be sent to Mozilla and not to the add-on add-on needs to:Extend developer tools to access your data in open tabsDisplay notifications to youAccess browser tabsStore unlimited amount of client-side dataAccess browser activity during navigationAccess your data for all websitesFixed element selection in websites that were blocking it with CSP.
Using Firefox for scraping — Scrapy 1.4.0 documentation
Using Firefox for scraping — Scrapy 1. 4. 0 documentation
Here is a list of tips and advice on using Firefox for scraping, along with a
list of useful Firefox add-ons to ease the scraping process.
Caveats with inspecting the live browser DOM¶
Since Firefox add-ons operate on a live browser DOM, what you’ll actually see
when inspecting the page source is not the original HTML, but a modified one
after applying some browser clean up and executing Javascript code. Firefox,
in particular, is known for adding
the other hand, does not modify the original page HTML, so you won’t be able to
extract any data if you use in your XPath expressions.
Therefore, you should keep in mind the following things when working with
Firefox and XPath:
Disable Firefox Javascript while inspecting the DOM looking for XPaths to be
used in Scrapy
Never use full XPath paths, use relative and clever ones based on attributes
(such as id, class, width, etc) or any identifying features like
contains(@href, ‘image’).
Never include elements in your XPath expressions unless you
really know what you’re doing
Useful Firefox add-ons for scraping¶
Firebug¶
Firebug is a widely known tool among web developers and it’s also very
useful for scraping. In particular, its Inspect Element feature comes very
handy when you need to construct the XPaths for extracting data because it
allows you to view the HTML code of each page element while moving your mouse
over it.
See Using Firebug for scraping for a detailed guide on how to use Firebug with
Scrapy.
XPather¶
XPather allows you to test XPath expressions directly on the pages.
XPath Checker¶
XPath Checker is another Firefox add-on for testing XPaths on your pages.
Tamper Data¶
Tamper Data is a Firefox add-on which allows you to view and modify the HTTP
request headers sent by Firefox. Firebug also allows to view HTTP headers, but
not to modify them.
Firecookie¶
Firecookie makes it easier to view and manage cookies. You can use this
extension to create a new cookie, delete existing cookies, see a list of cookies
for the current site, manage cookies permissions and a lot more.
Is Web Scraping Illegal? Depends on What the Meaning of the Word Is
Depending on who you ask, web scraping can be loved or hated.
Web scraping has existed for a long time and, in its good form, it’s a key underpinning of the internet. “Good bots” enable, for example, search engines to index web content, price comparison services to save consumers money, and market researchers to gauge sentiment on social media.
“Bad bots, ” however, fetch content from a website with the intent of using it for purposes outside the site owner’s control. Bad bots make up 20 percent of all web traffic and are used to conduct a variety of harmful activities, such as denial of service attacks, competitive data mining, online fraud, account hijacking, data theft, stealing of intellectual property, unauthorized vulnerability scans, spam and digital ad fraud.
So, is it Illegal to Scrape a Website?
So is it legal or illegal? Web scraping and crawling aren’t illegal by themselves. After all, you could scrape or crawl your own website, without a hitch.
Startups love it because it’s a cheap and powerful way to gather data without the need for partnerships. Big companies use web scrapers for their own gain but also don’t want others to use bots against them.
The general opinion on the matter does not seem to matter anymore because in the past 12 months it has become very clear that the federal court system is cracking down more than ever.
Let’s take a look back. Web scraping started in a legal grey area where the use of bots to scrape a website was simply a nuisance. Not much could be done about the practice until in 2000 eBay filed a preliminary injunction against Bidder’s Edge. In the injunction eBay claimed that the use of bots on the site, against the will of the company violated Trespass to Chattels law.
The court granted the injunction because users had to opt in and agree to the terms of service on the site and that a large number of bots could be disruptive to eBay’s computer systems. The lawsuit was settled out of court so it all never came to a head but the legal precedent was set.
In 2001 however, a travel agency sued a competitor who had “scraped” its prices from its Web site to help the rival set its own prices. The judge ruled that the fact that this scraping was not welcomed by the site’s owner was not sufficient to make it “unauthorized access” for the purpose of federal hacking laws.
Two years later the legal standing for eBay v Bidder’s Edge was implicitly overruled in the “Intel v. Hamidi”, a case interpreting California’s common law trespass to chattels. It was the wild west once again. Over the next several years the courts ruled time and time again that simply putting “do not scrape us” in your website terms of service was not enough to warrant a legally binding agreement. For you to enforce that term, a user must explicitly agree or consent to the terms. This left the field wide open for scrapers to do as they wish.
Fast forward a few years and you start seeing a shift in opinion. In 2009 Facebook won one of the first copyright suits against a web scraper. This laid the groundwork for numerous lawsuits that tie any web scraping with a direct copyright violation and very clear monetary damages. The most recent case being AP v Meltwater where the courts stripped what is referred to as fair use on the internet.
Previously, for academic, personal, or information aggregation people could rely on fair use and use web scrapers. The court now gutted the fair use clause that companies had used to defend web scraping. The court determined that even small percentages, sometimes as little as 4. 5% of the content, are significant enough to not fall under fair use. The only caveat the court made was based on the simple fact that this data was available for purchase. Had it not been, it is unclear how they would have ruled. Then a few months back the gauntlet was dropped.
Andrew Auernheimer was convicted of hacking based on the act of web scraping. Although the data was unprotected and publically available via AT&T’s website, the fact that he wrote web scrapers to harvest that data in mass amounted to “brute force attack”. He did not have to consent to terms of service to deploy his bots and conduct the web scraping. The data was not available for purchase. It wasn’t behind a login. He did not even financially gain from the aggregation of the data. Most importantly, it was buggy programing by AT&T that exposed this information in the first place. Yet Andrew was at fault. This isn’t just a civil suit anymore. This charge is a felony violation that is on par with hacking or denial of service attacks and carries up to a 15-year sentence for each charge.
In 2016, Congress passed its first legislation specifically to target bad bots — the Better Online Ticket Sales (BOTS) Act, which bans the use of software that circumvents security measures on ticket seller websites. Automated ticket scalping bots use several techniques to do their dirty work including web scraping that incorporates advanced business logic to identify scalping opportunities, input purchase details into shopping carts, and even resell inventory on secondary markets.
To counteract this type of activity, the BOTS Act:
Prohibits the circumvention of a security measure used to enforce ticket purchasing limits for an event with an attendance capacity of greater than 200 persons.
Prohibits the sale of an event ticket obtained through such a circumvention violation if the seller participated in, had the ability to control, or should have known about it.
Treats violations as unfair or deceptive acts under the Federal Trade Commission Act. The bill provides authority to the FTC and states to enforce against such violations.
In other words, if you’re a venue, organization or ticketing software platform, it is still on you to defend against this fraudulent activity during your major onsales.
The UK seems to have followed the US with its Digital Economy Act 2017 which achieved Royal Assent in April. The Act seeks to protect consumers in a number of ways in an increasingly digital society, including by “cracking down on ticket touts by making it a criminal offence for those that misuse bot technology to sweep up tickets and sell them at inflated prices in the secondary market. ”
In the summer of 2017, LinkedIn sued hiQ Labs, a San Francisco-based startup. hiQ was scraping publicly available LinkedIn profiles to offer clients, according to its website, “a crystal ball that helps you determine skills gaps or turnover risks months ahead of time. ”
You might find it unsettling to think that your public LinkedIn profile could be used against you by your employer.
Yet a judge on Aug. 14, 2017 decided this is okay. Judge Edward Chen of the U. S. District Court in San Francisco agreed with hiQ’s claim in a lawsuit that Microsoft-owned LinkedIn violated antitrust laws when it blocked the startup from accessing such data. He ordered LinkedIn to remove the barriers within 24 hours. LinkedIn has filed to appeal.
The ruling contradicts previous decisions clamping down on web scraping. And it opens a Pandora’s box of questions about social media user privacy and the right of businesses to protect themselves from data hijacking.
There’s also the matter of fairness. LinkedIn spent years creating something of real value. Why should it have to hand it over to the likes of hiQ — paying for the servers and bandwidth to host all that bot traffic on top of their own human users, just so hiQ can ride LinkedIn’s coattails?
I am in the business of blocking bots. Chen’s ruling has sent a chill through those of us in the cybersecurity industry devoted to fighting web-scraping bots.
I think there is a legitimate need for some companies to be able to prevent unwanted web scrapers from accessing their site.
In October of 2017, and as reported by Bloomberg, Ticketmaster sued Prestige Entertainment, claiming it used computer programs to illegally buy as many as 40 percent of the available seats for performances of “Hamilton” in New York and the majority of the tickets Ticketmaster had available for the Mayweather v. Pacquiao fight in Las Vegas two years ago.
Prestige continued to use the illegal bots even after it paid a $3. 35 million to settle New York Attorney General Eric Schneiderman’s probe into the ticket resale industry.
Under that deal, Prestige promised to abstain from using bots, Ticketmaster said in the complaint. Ticketmaster asked for unspecified compensatory and punitive damages and a court order to stop Prestige from using bots.
Are the existing laws too antiquated to deal with the problem? Should new legislation be introduced to provide more clarity? Most sites don’t have any web scraping protections in place. Do the companies have some burden to prevent web scraping?
As the courts try to further decide the legality of scraping, companies are still having their data stolen and the business logic of their websites abused. Instead of looking to the law to eventually solve this technology problem, it’s time to start solving it with anti-bot and anti-scraping technology today.
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Frequently Asked Questions about firefox scraper
Is it legal to use a web scraper?
So is it legal or illegal? Web scraping and crawling aren’t illegal by themselves. After all, you could scrape or crawl your own website, without a hitch. … Big companies use web scrapers for their own gain but also don’t want others to use bots against them.
Are web scrapers bad?
Site scraping can be a powerful tool. In the right hands, it automates the gathering and dissemination of information. In the wrong hands, it can lead to theft of intellectual property or an unfair competitive edge.Apr 18, 2016
What is the best web scraper?
Top 8 Web Scraping ToolsParseHub.Scrapy.OctoParse.Scraper API.Mozenda.Webhose.io.Content Grabber.Common Crawl.Feb 6, 2021
