How to Bypass CAPTCHA in site scrapping tool

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Hi All,
I am working on a site scrapping tool, I am using C# class "WebClient" to download site content. After some time(usually 5-10 minutes) some sites response with captcha image, Is there any way to bypass the captcha. I have tried to use different free proxies but many of them dont work. I have also tried to insert fair amount of time interval between consecutive calls but all in vain.

Is there any solution for that problem or there is some inherent problem in my methodology?

Thanks

Posted 18-May-12 0:13am

leopard447

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Richard MacCutchan 18-May-12 6:29am

Captchas are put on websites specifically to protect them from automated access like the above. If there was a simple way to bypass them then they would not be of any use.

2 solutions

Solution 2

You can use the API of KnowCaptcha to solve the problem.

Posted 15-Apr-14 21:55pm

Know Captcha

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OriginalGriff · Accepted Answer · 2012-05-18T00:37:00

Solution 1

No, it's is an inherent problem in your methodology

If there was, the Captcha system would quickly be updated to prevent you getting round it.

That is exactly what captcha is there for: to make sure it is a human being browsing, not a web bot.

Posted 18-May-12 0:37am

OriginalGriff