Wen Scraping with Captcha: design code in Python to efficiently download tens of thousands of PDFs

I need to download a large quantity of PDF files which are behind a captcha system. I need code in Python that works with an OCR such as gocr, and can batch download PDFs (up to 10? simultaneous downloads) and include random delays in requests.

Start URLs look like this (select JA, complete captcha, hit WEITER, click on PDF download link - e.g. [login to view URL] & save to a given download folder).

[login to view URL]

[login to view URL]

[login to view URL]

[login to view URL]

[login to view URL]

[login to view URL]

[login to view URL]

[login to view URL]

Evner: Javascript, PHP, Python, Software Arkitektur, Web Skrabning

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Om arbejdsgiveren:
( 8 bedømmelser ) Aughrim, Ireland

Projekt ID: #19593430

Tildelt til:


After quick look at this site I'm pretty sure it can be done using tesseract (but I'm ok with gocr too), I've done bunch of scrapers for harder and more distorted captchas than this one with success so it won't be a ch Flere

€100 EUR in 3 dage
(18 bedømmelser)

21 freelancere byder i gennemsnit €139 på dette job


hi I am really interested in your project I have full experience of website scraping by using c# and python scrapy, selenium I could scrape your website including captcha as you want I could satisfy you Everything Flere

€150 EUR in 3 dage
(127 bedømmelser)

Hi. I did read the project description and have a few questions. 1. Do you need the script as well or data only? 2. What is the format of the output data? CSV is OK? We can do other formats as well. 3. Which fields do Flere

€200 EUR in 2 dage
(120 bedømmelser)

Dear man I’m a senior PHP developer. I read your project description very carefully and I hope to work in this project. If we can develop this project, I’ll do my best and show you my top Skills. Please check the Flere

€155 EUR in 3 dage
(56 bedømmelser)

High-quality & Fast-delivery is promised! As a highly skilled full stack developer, I have rich experience in website development. I am very confident with my skills and I'd like to help your business by doing my best. Flere

€150 EUR in 7 dage
(99 bedømmelser)

Dear Employer I am interested in your project. I am a developer with more than 10 years experience in app development and have the ability to perform and execute projects. Especially, I have a specialty in web desig Flere

€155 EUR in 3 dage
(117 bedømmelser)

Hi Glad to see you I have read your description and get interest in your project Because I have rich experience in web scraping with python script I have been developing web app for 7 years, and until now I have devel Flere

€140 EUR in 7 dage
(21 bedømmelser)

Hi, Sir!! i can do it in 2 hours. automation is very useful to save your time and get more money. Your project is very simple for me. if you give me your project, i will use python , selenium. i am a pytho Flere

€100 EUR in 3 dage
(29 bedømmelser)

Hi, I am interested in this job. I understand what you required. I will provide you fast, quality and error-free work because I am professional and experienced in it. Waiting to discuss with you more. Regards Flere

€140 EUR in 3 dage
(19 bedømmelser)

I am web and app program Expert who knows the value of time, very hard working and always delivers the work on time. My Motive is to make my employer to feel the greatest satisfaction with low price. If you want to dev Flere

€100 EUR in 3 dage
(31 bedømmelser)

Hi. I am really interested in your project. Because it's the most appropriate project I can complete perfectly. I have been working as a professional software developer for years and I earned rich experience in it. Flere

€155 EUR in 3 dage
(22 bedømmelser)

Dear sir I have developed for 10 years and I have many experiences with Web scrapping. I have built many scrapping projects with C#, Python and jQuery. One of them is to extract birthdays of horses in a horse club a Flere

€250 EUR in 2 dage
(9 bedømmelser)

Dear, sir @I am full time freelancer@ I have read your description carefully. I am a python expert and I have rich experience with scrapping. So I think that i can do your project in your time. If you hire me, I 'll pr Flere

€100 EUR in 7 dage
(13 bedømmelser)

Hi, Dear How are you doing? I am very interested in your project. I am always ready for you. I wish you contact me as soon as possible. Let us discuss your project on chat in detail. Thanks for your regards.

€90 EUR in 5 dage
(10 bedømmelser)

Hi! Nice to meet you! I have rich experience about python .I will finish this task as soon as possible. I have over 7 years IT experience as a back-end, front-end. I've been successfully completing many projects from Flere

€200 EUR in 5 dage
(8 bedømmelser)

Hi, I worked on previous web scrapping projects so I can achieve it using Node.JS instead of Python. Let discuss the details in chat. If you need more information about me or about the projects I worked on you can vi Flere

€78 EUR in 5 dage
(4 bedømmelser)

Hello, I have extensive experience in similar projects and I can do task within timeline and budget.

€120 EUR in 7 dage
(1 bedømmelse)

Hello, i have worked on similar project before. I can make use of google vision that has STRONG OCR detection and easily bypass this captcha support. Also, this is something that oculd be done with threads and requests Flere

€50 EUR på 1 dag
(1 bedømmelse)

We are a group of developers with a proven track record in Website Designing, Software, and Mobile app development. We have a team of 20+ including Developers, Designer, and Tester with an average 3 years of experience Flere

€140 EUR in 7 dage
(0 bedømmelser)

Thanks for your posting! I am a image processing expert using machine learning, such as tensorflow, caffe, darknet and etc. I have developed a lot object detection and recognition projects by Java, Android, c#, C++, p Flere

€200 EUR in 3 dage
(0 bedømmelser)

Hello, thank you for this project in which I'm really interested. I've written a script which perform the expected tasks, handling captcha and downloading straight forward. It would be a pleasure to work for y Flere

€155 EUR in 3 dage
(0 bedømmelser)