Free Website Crawler Tool: Free Website Crawler Tool

This is probably the most money-saving tutorial on website grabbing

What's the biggest headache in data crawling? Nine out of ten will sayIP blocked. I just wrote a good crawler script yesterday, and today it ran and stopped. Don't be in a hurry to change tools, first see if the IP is locked throat. Let's talk about something real today, teach you how to use free tools + proxy IP to achieve long-term stability of the data crawl.

Why do you always get pulled from websites?

Many newbies think that changing the User-Agent will fool them, in fact, there are many ways for websites to recognize robots. In particular, these three features are the easiest to expose:

1. the same IP high-frequency access (dozens of requests per minute)
2. request time is too regular (like a stopwatch on time)
3. only visit a specific page (straight to the target without visiting other)

This is where a proxy IP is needed tomasquerading as different usersIt's like when you go to the supermarket and change your clothes and hairstyle every time. It's like if you go to the grocery store and change your clothes and hairstyle every time, the cashier won't recognize the same person.

Free tools for hands-on configuration

Here are three recommended tools that really work, and remember to use them with a proxy IP for better results:

Teach you how to pick up agents by hand

Take Python's requests library as an example, and use ipipgo's proxy service as a demonstration:

import requests

proxies = {
    'http': 'http://username:password@gateway.ipipgo.com:端口',
    'https': 'http://username:password@gateway.ipipgo.com:端口'
}

response = requests.get('destination URL', proxies=proxies, timeout=10)
print(response.text)

Be careful to replace username and password with your own authentication information registered with ipipgo, it is recommended to use theirDynamic Residential Agents, this kind of IP is most like real life users.

A Guide to Avoiding the Pit (Blood and Tears)

- Don't use a public proxy pool, those IPs are already flagged by major websites.
- Each request is randomly spaced 2-5 seconds apart, too fast and it will be blocked.
- Regularly clear cookies, recommended to be emptied every 50 requests
- Don't fight with CAPTCHA, change IP and try again.

Frequently Asked Questions QA

Q: Do free proxies work?
A: Temporary test can be, long-term use or have to choose ipipgo such professional services. Their IP survival rate can reach 98%, which is too stable than the free proxy.

Q: How many agents do I need to have enough?
A: Look at the collection frequency. Common demand pick ipipgo'sBasic Package(500IP/day) enough, if you do price monitoring and other high-frequency operations, it is recommended that the enterprise version of the dynamic IP pool.

Q: How can I tell if a proxy is in effect?
A: Visit this test URL: http://ip.ipipgo.com to see the current exit IP address in use.

Tips for Maintaining a Proxy Pool

It is recommended to change the IP of 20% every day, just like changing the water for a fish tank. It is especially convenient to use ipipgo's API to realize automatic replacement:

 Example of an API to get a new IP
import requests

def refresh_ip(): url = "
    url = "https://api.ipipgo.com/getip?type=json&count=10"
    response = requests.get(url).json()
    return response['data']

Remember to set up a fail-over mechanism to automatically switch to the next IP in case of a connection timeout, so that even if individual proxies fail, the entire collection task will not be interrupted.

Finally, to be honest, free tools + professional proxy is the king. Instead of tossing around various cracked versions of software, you should spend your energy on IP quality. After all, the website is not blocked by the tool, but the IP address behind. With the right method, ordinary tools can also play a professional effect.