Web scraping has been around for as long as the Web itself. Although it is often associated with web content extraction, it has not always served this purpose. This technique was first developed as a mean to automate complicated or painful tasks.
One of the first use of web scraping is linked with testing frameworks. By using tools such as Selenium, companies such as Ip-Label have built products that enable web developers and web masters to monitor a website’s performance on daily a basis.
Today, scraping websites is best known by digital marketing services inside (tech) startups, thanks to the rise of Growth Hacking. Indeed, it is the perfect mean to automate tasks such as collecting prospect data or automate marketing actions like posting a tweet or following someone on a social network.
Our ambition and mission is to make business data accessible.
How to start a data
extraction project ?
1. Define what you need
Start with the basic task of defining exactly what you are trying to achieve : are you looking to drive KPIs, enrich a business database to strengthen your product, etc.
2. Identify target websites
Once you know what kind of data you need, you can identify web sources. It is important to do this BEFORE creating a structured data schema. Indeed, once you have selected all the sources you wish to extract data from, you will be able to create a nice JSON document (your template / schema). It looks like the following :
3. Architect your workflow
Decide how you launch the bots : is it manually, from a defined scheduled, triggered by an event from your application ? Also, take a look at how you will integrate data later on. Sometimes crawling websites require to wait a very long time, especially if the crawl setup for multiple websites at once.
If you use a cloud platform such as ours, you won’t have to maintain servers or dependencies, which can be a huge pain.
4. Build the bot(s)
5. Integrate your data
How to build a bot
that extracts web data ?
1. Analyze the website
The first step consists of analyzing the website’s structure. Open your web browser and use the “Inspect Tab”. A website is like a tree made of nodes. Nodes are XPath : they define the path you need to use to get the data you want.
You should also check out incoming requests by opening the “Network” tab. The website could use an API or load AJAX, which could simplify (or not) the extraction process.
2. Build the template and your schema
Once you spotted the nodes you wish to extract data from (and remember, all the other target websites you need to extract data from), you can build the schema (object) you will save in your database. Having a unified schema across different sites allows you to simplify the integration process later on.
3. Code the bot
The “fun” part begin. Although it can be very fun to scrape websites, it happens that many challenges arise while coding. Websites use more and more protection techniques (Cloudflare, Datadome. etc.) so you might not succeed. In that case, you can contact us.
4. Avoid to be detected
Always remember to use a different IP than your server’s. Getting banned from a website happens way faster than you could imagine 🙂