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We need a python web scrapper that will take txt file input, proxy file, post the data in the txt file and filter it according to the result that is given by the website. The scraper should be multithreaded. You will deal with proxies and captchas and cloudflare. once you hit a captcha, just switch to another proxy and you should be able to mimic real browsers in order to bypass cloudflare.
Projekt-ID: 40255116
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97 freelancere byder i gennemsnit $464 USD på dette job

⭐⭐⭐⭐⭐ Thank you Valuable Client for the clear requirements. CnELIndia, led by Raman Ladhani, will deliver a high‑performance Python scraper tailored to your needs. Execution Plan: • Build a multithreaded architecture using concurrent futures/asyncio for high throughput • Parse TXT input and structured proxy list with automatic rotation • Implement intelligent proxy switching upon captcha detection • Integrate headless browser automation (Selenium/Playwright) to mimic real user behavior • Apply anti‑detection techniques: user‑agent rotation, request fingerprint randomization, session persistence • Cloudflare handling via browser emulation and dynamic challenge detection • Robust filtering engine to process and export only qualified results • Logging, retry logic, and failure isolation for stability We ensure scalable design, clean modular code, secure proxy handling, and full testing before delivery to guarantee reliable automation and performance.
$500 USD på 7 dage
9,0
9,0

As an experienced Full stack developer specializing in web scraping and automation, I have the skills required to build your multithreaded Python scraper with proxies. My 7 years' work with top companies like Metlife GOSC, DXC Technologies, and Elite Services has honed my abilities to provide high-quality work with speedy turnarounds while delivering utmost accuracy - qualities that you can see from my low bids. Your project encompasses everything I've excelled at: data processing, software architecture, web scraping, and Python programming. Furthermore, my familiarity with captcha-breaking techniques and dealing with cloudflare gives me an edge in this particular project. My experience involves client satisfaction as priority; thus, I offer unlimited support for 4 days after completion to address any issues you might come across. My employer-oriented approach means I prioritize developing lasting relationships that thrive on clear and effective communication: hence, I guarantee to get back to you as soon as possible, and ensure your project is booked at a time convenient for you. Partnering with me means getting great value for your money since I stress on fair pricing which reflects the quality and speed of my work. I am highly availability from 8 AM to 12 PM EST allowing us greater flexibility to collaborate effectively. Let's talk more about how I can apply my comprehensive skill set in benefiting your project!
$500 USD på 7 dage
8,7
8,7

Hello, I understand you need a multithreaded Python scraper that reads input from a TXT file, rotates proxies, submits data, filters results based on website responses, and intelligently handles blocks by switching proxies. I can build a clean, modular scraper using Python (requests/Playwright where appropriate), thread pooling for concurrency, structured proxy rotation, retry logic, and result filtering logic — fully documented and configurable. I have 10+ years of experience building high-performance scraping and automation systems with scalable architecture and robust error handling. Let’s connect in chat to review the target site, discuss feasibility, and finalize timeline and fixed pricing., thank you Regards Gaurav Garg
$500 USD på 7 dage
8,5
8,5

⭐⭐⭐⭐⭐ Create a Python Web Scraper to Handle Proxies and Captchas ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and see you are looking for a Python web scraper. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for web scraping. I will create a multithreaded scraper that takes input from a text file, uses proxies, and filters data based on website results. My approach includes handling captchas and switching proxies seamlessly to mimic real browsers. ➡️ Why Me? I can easily build your web scraper as I have 5 years of experience in Python programming, web scraping, and automation. My expertise includes working with proxies, handling captchas, and managing Cloudflare challenges. Additionally, I have a strong grip on data processing and multithreading techniques, ensuring an efficient solution for your needs. ➡️ Let's have a quick chat to discuss your project in detail. I can also provide samples of my previous work. Looking forward to discussing this with you! ➡️ Skills & Experience: ✅ Python Programming ✅ Web Scraping ✅ Multithreading ✅ Proxy Management ✅ Captcha Handling ✅ Cloudflare Bypassing ✅ Data Filtering ✅ API Integration ✅ Data Processing ✅ Error Handling ✅ Script Optimization ✅ Automation Waiting for your response! Best Regards, Zohaib
$350 USD på 2 dage
8,0
8,0

Hello, HAVE HANDS-ON EXPERIENCE WITH SUCH PROJECT I am a Python developer with 11+ years of experience in high-performance automation, data processing, and network-based systems. I understand your requirement is to build a multithreaded scraper that processes TXT input, rotates proxies intelligently, handles captcha events, and filters responses efficiently while maintaining stability and performance. -->> Multithreaded Python scraper with queue-based worker architecture -->> Proxy rotation & health monitoring (auto-switch on failure/captcha) -->> Request fingerprinting & browser-like header/session handling -->> Structured result filtering & clean output generation -->> Optimized logging, retry logic, and failure management I design scalable, thread-safe architectures using asyncio/thread pools, efficient I/O handling, and clean modular code to ensure reliability and maintainability. I would begin by defining the request/response workflow, implementing proxy management and concurrency control, then integrating response parsing and structured filtering with performance testing. in chat as I have a few technical questions regarding target response patterns, expected volume, and proxy type (residential/datacenter) to finalize the approach. Successfully deliver a stable, high-performance scraping system built for efficiency and scalability. Thanks & regards Julian
$500 USD på 7 dage
8,0
8,0

Youssef, Full-Time Freelancer with Python Programming expertise in web scraping, browser automation, and dynamic content handling. I understand you need a multithreaded Python scraper that takes text file input, uses a proxy file, posts data, and filters results based on website responses. My approach will focus on mimicking real browsers to bypass Cloudflare and efficiently manage proxies when encountering captchas, as you outlined. I will leverage robust tools like Playwright or Selenium to achieve complex browser automation and ensure reliable data extraction. I've successfully built similar robust scraping solutions.
$500 USD på 1 dag
7,3
7,3

Leveraging a decade of expertise in web and app development, WellSpring Infotech was designed from the ground up to meet the demands of a dynamic digital landscape. Our specialist team demonstrates a deep understanding of multithreaded Python scraping and proxy management- two skills critical to your project's success. Time Management is a crucial aspect for us as our proficient engineers can navigate captcha hurdles and Cloudflare challenges seamlessly, with just a switch to another proxy. As you expand your search for the right supplier, keep in mind our commitment to unparalleled quality, scalability, and security. Not only do we bring in the specific python competency your project demands but WellSpring Infotech also caters to youtempered individual needs whether they be inigcht offers again. Moreover, employing tailored applications, we have excelled in diverse niches including Health-tech, E-commerce, and Real-estate, speaking exactly to your challenges. Thanks....
$750 USD på 7 dage
7,8
7,8

Hi there, I understand that you're looking for a robust multithreaded Python scraper that efficiently utilizes proxies and can handle challenges like CAPTCHAs and Cloudflare. With my extensive experience in web scraping and automation, I have successfully developed similar projects that optimize data extraction while maintaining accuracy and speed. My proficiency in Python, coupled with a solid grasp of proxy management, positions me as the ideal freelancer for this endeavor. I can create a solution that reads from your provided text file, posts data, and filters responses seamlessly. Additionally, I will ensure that the scraper mimics real browser behaviors to effectively bypass any barriers. Let's set a timeline and get started on this project right away. What specific output format do you need for the filtered data?
$610 USD på 12 dage
6,7
6,7

Hello, I will create a PHP script to automate your task. Please provide the details: the website URL, the list of fields to collect, or an example of the output. I have extensive experience in writing PHP scripts for automating data collection and posting. Please see my reviews for reference.
$350 USD på 3 dage
6,7
6,7

Hi, I have done many python Scraping projects so I am confident to do this task perfectly. I also have good working experience with proxies,Automation,Data processing & Machine Learning. Message me here. I am available here to discuss more & start the work. Looking forward to an early and positive response. Regards, Shalu
$250 USD på 6 dage
7,0
7,0

Hello, I trust you're doing well. I am well experienced in machine learning algorithms, with nearly a decade of hands-on practice. My expertise lies in developing various artificial intelligence algorithms, including the one you require, using Matlab, Python, and similar tools. I hold a doctorate from Tohoku University and have a number of publications in the same subject. My portfolio, which showcases my past work, is available for your review. Your project piqued my interest, and I would be delighted to be part of it. Let's connect to discuss in detail. Warm regards. please check my portfolio link: https://www.freelancer.com/u/sajjadtaghvaeifr
$500 USD på 7 dage
6,5
6,5

I've built multithreaded Python scrapers quite a few times - proxy rotation, cloudflare bypassing, captcha handling, browser fingerprint mimicking - this is pretty standard stuff for me. Your requirements are clear: take a txt + proxy file as input, post the data, filter results based on what the site returns, all multithreaded. For cloudflare bypassing I typically use playwright or cloudscraper with proper headers and TLS fingerprinting to mimic real browsers. When we hit a captcha, switching proxies is the right call. A few quick questions to make sure I build exactly what you need: 1. What website is being targeted? (So I can understand the response format for filtering) 2. What's the expected throughput you're after - number of concurrent threads roughly? Happy to share some past scraping work as well. Should be doable in 3-4 days once I have the details. - Usama
$550 USD på 4 dage
6,6
6,6

Hello, I am really excited about the opportunity to collaborate with you on this project! It aligns perfectly with my skill set and experience, and I’m confident I can contribute meaningfully to your vision. I genuinely enjoy working on projects like this, and I believe we can create something both functional and visually engaging. Please feel free to check out my profile to learn more about my past work and client feedback. I’d love to connect and discuss the project details further your goals, expectations, and any specific features or ideas you have in mind. The more I understand your vision, the better I can bring it to life. I am ready to get started right away and will put my full energy and focus into delivering quality results on time. My goal is not just to complete the project, but to exceed your expectations and build a long-term working relationship. Looking forward to hearing from you soon! With regards! Abhi
$500 USD på 7 dage
6,6
6,6

Hi there, I’ve reviewed your project and understand you need a robust multithreaded Python scraper that reads from a TXT input file, rotates proxies, submits data to the target site, and filters responses based on returned results. The system must also intelligently handle captchas and Cloudflare by switching proxies and mimicking real browser behavior. I can build this using Python with concurrent threading for high performance, structured proxy rotation with health checks, and automated session handling to simulate real browser headers, fingerprints, and request patterns. The scraper will detect captcha triggers and instantly rotate to a fresh proxy without breaking the workflow. I will also implement clean result parsing, structured output handling, and error logging to ensure stability at scale. The architecture will be modular, allowing easy updates if the target site changes. Performance optimization and fail safe mechanisms will be included to maintain consistency during long runs. Let’s connect so I can review the target website and define the most reliable bypass strategy. Best regards, Muhammad Adil Portfolio: https://www.freelancer.com/u/webmasters486
$400 USD på 5 dage
6,2
6,2

Hello, I've reviewed your requirements and have worked on similar projects before. With my experience and skills, I can complete your project to your satisfaction. Please contact me via chat to discuss the details. Thank you.
$500 USD på 7 dage
6,2
6,2

With over 5 years as a Software Engineer, I have amassed hands-on experience in Web Scraping using Python and PHP and a strong understanding of Data Processing. My skills in Software Architecture makes me a suitable candidate for this project as I can develop a multithreaded Python scraper that will not only take txt file input and proxy file but also effectively post the data and parse the website's results. My knowledge extends to dealing with cloudflare problems, IPs ban, captchas, and proxies as well which would be invaluable in creating this robust scraper. Additionally, my proficiency in Networking Tools and Cybersecurity Frameworks equips me to not only mimic real browsers for the required automation but also bypass cloudflare effectively. Furthermore, with a strong background in threat analysis, vulnerability assessments, and penetration testing, you can bank on me to ensure that our tool is resilient enough to handle any security challenges we might face during scraping. It is evident that my diverse set of proficiencies align perfectly with the needs of your project. My ability to provide full-stack web development, adapt IoT systems for various domains and guarantee secure network architectures would allow us to build the truly comprehensive scraper you require. I am confident that by choosing me for this project you are securing experienced hands capable of ensuring the success of your objectives. Let's work together!
$733,33 USD på 2 dage
5,8
5,8

Your multithreaded Python scraper needs to read txt input, rotate through proxies, post data to a target website, filter results, and handle Cloudflare plus captchas by switching proxies when blocked. The key challenge is mimicking real browser behavior to avoid detection. I'd build this using Python with playwright-python or selenium-wire for browser automation since they handle JavaScript rendering and can bypass Cloudflare's bot detection better than requests-based scrapers. The scraper would use threading or asyncio for concurrent requests, with each thread assigned a proxy from your proxy file. When a captcha or Cloudflare challenge is detected, that thread immediately switches to the next available proxy and retries. For Cloudflare specifically, I'd use undetected-chromedriver or playwright's stealth mode to mask automation signals like WebDriver flags, navigator properties, and canvas fingerprints. The scraper would randomize user agents, add realistic delays between requests, and simulate mouse movements if needed. Proxy rotation would happen automatically on failures, with dead proxies logged and skipped. The workflow: read txt file line by line, assign each entry to a worker thread, post data to the site using a proxy, parse the response to filter results based on your criteria, write filtered output to a results file. Muhammad Saad
$250 USD på 2 dage
6,0
6,0

Hi there, Good afternoon I am Talha. I have read you project details i saw you need help with Automation, PHP, Data Extraction, Data Processing, Data Collection, Software Architecture, Python and Web Scraping I am excited to submit my proposal for your project, which focuses on a comprehensive project plan. To begin, we will thoroughly understand your project's objectives and requirements, ensuring alignment on scope and goals. We will provide a clear and realistic project timeline with manageable milestones to ensure timely completion Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan
$250 USD på 11 dage
5,7
5,7

Hi there, ✸✸✸Python Expert is Here✸✸✸ I'll create a python web scrapper that will be able to take: ✔️ txt file input, ✔️ Proxy file, ✔️Post the data in the txt file ✔️ And filter it according to the result that is given by the website. Also The scraper will be multithreaded and as per your requirements. I'm ready to start working on it right away. Let's connect!
$255 USD på 2 dage
5,9
5,9

Your scraper will fail at scale if you're rotating proxies without session persistence - Cloudflare fingerprints browser behavior across requests, so switching proxies mid-session triggers their bot detection. You'll burn through your proxy pool in hours. Quick question - what's your current proxy setup? Are you using residential IPs with sticky sessions or datacenter proxies? And what's the target site's rate limit threshold - are we talking 100 requests per minute or 10K per hour? This determines whether we need a distributed queue system or simple thread pooling. Here's the architectural approach: - PYTHON + ASYNCIO: Build an async scraper using aiohttp instead of threading to handle 500+ concurrent connections without memory bloat from thread overhead. - PROXY ROTATION: Implement session-aware proxy management with sticky sessions lasting 5-10 minutes, rotating only on hard failures (403/429) to maintain Cloudflare trust scores. - CLOUDFLARE BYPASS: Use Playwright with stealth plugins to render JavaScript and mimic real browser TLS fingerprints - simple requests library won't cut it against modern bot detection. - CAPTCHA HANDLING: Integrate 2Captcha API with automatic fallback logic - when captcha detected, queue the request for retry with a fresh proxy after 30-second cooldown. - DATA PROCESSING: Parse responses with BeautifulSoup, validate against your filter criteria, and write to SQLite for deduplication before final output. I've built 4 production scrapers that process 2M+ pages daily without getting blocked. The difference between a script that works once and a system that runs 24/7 is handling edge cases - proxy timeouts, partial HTML responses, rate limit backoff. Let's discuss your target site's specific defenses before I architect the solution.
$450 USD på 10 dage
6,1
6,1

Cairo, Egypt
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Medlem siden mar. 30, 2016
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