Using Postman to Scrape APIs and Web Pages: Best Practices

  • 07/03/2023

Using Postman to Scrape APIs and Web Pages: Best Practices

The businessperson requires two most important things, a starting capital and data on its competitor. Having a credible source of public data that your competition is using is the most important part of scaling any business. When running a company that requires data from customers from all levels of the industry, it is important to go for a process that helps collect data from the web in bulk. Hence, web scraping services are a must in the USA's medium and large business sectors.

Most companies that use web scraping services in the USA go for Postman to scrape data off the internet. When you scrape using Postman or any other web scraping API, it creates a seamless process of data collection. However, when using Postman web scraping, it is essential to know the best practices for scraping data. It not only saves you from getting blocked by the websites but also keeps the process fast and hassle-free. So, here are the best practices for Postman to Scrape-

Check if Postman API Work on Your Scraping Tool

Postman is an API platform that helps developers to design scraping APIs. It is basically a Command Line Interface (CLI) that allows users to make their own web scraping actions that work best for their kind of data collection. Whatever tool you use to scrape data, make sure that it supports the Postman command line extension. You can then download and install Postman to start your web scraping process.

Be Gentle When Sending Queries

In web scraping, you have to send queries through the scraping tool to get data back as a response. However, sending too many queries might result in a slower scraping process. While the scraping process can be done with multiple devices, visiting the same website on all of them generally disrupts the website servers. Also, when you hit the target website with too many queries, it affects the user experience of the website and the website framework, if it is built to do so, catches the scraping bots and sends the queries into a confusing network of goose hunt fetching data with no use. Here’s how you can handle these disruptions-

  • Try scraping data during off-peak hours when the traffic in the servers is lesser, making it smoother to scrape.
  • Don’t send too many parallel or repeated requests to the target website.
  • Use rotating proxies or multiple IPs to spread the load of requests.
  • When sending requests one after the other, make sure you are putting some time between each of them.

Look For Robot.txt

Let’s be honest; website creators and administrators know that the website is going to be scrapped for data. So, they create the robot.txt file, which instructs web scraping programs on how to crawl the pages for data. Robot.txt contains a list of acceptable behaviors, like which web pages can or cannot be scraped, which user agents are not allowed, how fast the scraping process can be, how frequently you can send requests, and more. So, whenever you’re sending requests to the website for web scraping, make sure you read the robot.txt file, which is present in the root directory of the website.

Don’t Follow a Robotic Pattern

That is one of the reasons why the robot.txt file is created, to cut down the number of bots crawling on the website. While bots and humans both scrape data from the same server and website, the website framework still knows the difference between machines and humans. Human nature is unpredictable, and we’re slowly finding or scraping data, but bots are the exact opposite. They go to the exact places where they know data is present, and they do it fast. The anti-scraping programs on the website use the same factors of differentiation to block web scraping. So, when you use Postman to scrape data, make sure you add some random queries on the command line as well. It could be reading the texts on the website or browsing through pictures. Also, add some delay time in between the queries.

Use Proxies

Even if you use postman to scrape data, the IP usage limitations of a website will still foil your plans. When requests are sent to a website, whether it is to read data or scrape it, the IP address is recorded. If there are too many queries sent to the website from the same IP in a day, it is bound to get blacklisted by the website. Once that happens, it is difficult to use the IP address to even visit the website. So, when scraping data with a large number of queries throughout the day, it is good to use proxies. They not only cloak your original IP address but also switch to multiple IP addresses to make sure you don’t get blocked by the site. Rotating proxy servers is generally good at switching multiple IPs, but you can also use residential or ISP proxies if you don’t have a large requirement.

For a smaller web scrape requirement through Postman, you can also use a VPN which is a cheaper option than a proxy service. A VPN changes the location and IP address of your device. It not only lets you send multiple requests with every session but also lets you pass through geo-restriction in case there is a regionally exclusive website you want to scrape.

Wrapping Up

The value that web scraping services USA add to your business is beneficial in the USA market. In a competitive industry especially, web scraping through postman can be a game changer for medium and large business enterprises. E-commerce and online marketing or affiliate marketing brands can greatly benefit from the essential data that they can scrape using Postman. While using Postman for web scraping, make sure you follow the best practice to have obstruction-free data collection.

BotScraper provides users with appropriate web scraping solutions, which enable them to scrape data from websites in the most efficient manner. The services that BotScraper provides are reliable and cost-effective. The team of experienced experts also makes sure that the collected data is accurate and of high quality. Contact us today to start your web scraping journey with Postman!

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