Knowledgebase:
JD opens my browser to display captchas
Posted by Jay Downloader, Last modified by pspzockerscene psp on 18 September 2020 06:16 PM

Why does JD open my browser?

Some captcha types require a browser environment (JavaScript, Cookies, ...) to get solved. Others are much easier to solve if we use the browser fo example Googles "reCaptchaV2" and "reCaptchaV3":
test
(Side-Note: Once clicking a reCaptchaV3, it can visually change to look like a reCaptchaV2 at any time.)
reCaptchaV2 and reCaptchaV3 ("Invisible reCaptcha") demo/example: recaptcha-demo.appspot.com
Side-Note: Invisible reCaptcha captchas may actually be invisible in a real browser but when you need to solve such captchas via JDownloader Browser-Solver, they will always be visible due to technical reasons!

hcaptcha demo/example: dashboard.hcaptcha.com/signup

Which software-requirements does browser captcha solving have?

This depends on the kind of installation you have:

Requirements for Headless & myjdownloader users:

Requirements for "normal" JDownloader with GUI


Captcha related advanced settings

There are several Advanced Options (Settings->Advanced Settings) to customize the browser solver behavior.
Only change them if you know what you are doing!

  1. Enabled: This will enable/disable the browser solver
  2. Local HTTP Port: The http port of the local webserver
  3. Blacklist Entries: Define which hoster/plugins shall not use the browser solver.  
    Example: [ "uploaded.to-recaptcha" ].
    Note: We strongly recommend to modifiy this value in [Settings->Captcha->Settings Column]
    Note: The format is a json array. 
    * Do not forget the leading and trailing chars: [ and ] 
    * These special characters must be escaped: \ and " --> \ to \\ and " to \"
    * Each parameter in your commandline should be wrapped by " and seperated by a ,
    * Use %s as wildcard for the url
    * Do not press enter to confirm changes. Just unfocus the field by clicking somewhere else.

  4. Auto Open Browser: Should JD open the browser for you, or do you prefer to click a button to open it?
  5. Auto Click: JD can help you to solve some captchas in the browser, by simulating clicks and text inputs in the browser window.
  6. Wait For Map: Is required for the solver priority.  
    Example: {"imagetyperz" : 60000,"dbc" : 60000,"9kw" : 120000,"myjd" : 60000,"jac" : 32000,"cb" : 120000} 
    Note: We strongly recommend to modifiy this value in [Settings->Captcha->Timeouts Column]
    Note: The format is a json object. 
    * Do not forget the leading and trailing chars: { and } 
    * These special characters must be escaped: \ and " --> \ to \\ and " to \"
    * Each parameter in your commandline should be wrapped by " and seperated by a ,
    * Use %s as wildcard for the url
    * Do not press enter to confirm changes. Just unfocus the field by clicking somewhere else.
  7. Black White Listing: Enable/Disable the Blacklist or Whitelist Entries.
  8. Whitelist Entries:  Define which hoster/plugins shall ignore the Blacklist Entries the browser solver.  
    Example: [ "uploaded.to-recaptcha" ]. 
    Note: We strongly recommend to modifiy this value in [Settings->Captcha->Settings Column
    Note: The format is a json array. 
    * Do not forget the leading and trailing chars: [ and ] 
    * These special characters must be escaped: \ and " --> \ to \\ and " to \"
    * Each parameter in your commandline should be wrapped by " and seperated by a ,
    * Use %s as wildcard for the url
    * Do not press enter to confirm changes. Just unfocus the field by clicking somewhere else.
  9. Browser Commandline: We recommend to use the default browser that you use every day. This will guarantee the easiest captchas. If you want to use a different browser anyway, you can set up an command line here.
    Example: [ "C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe", "-app=%s" ] 
    Note: The format is a json array.
    * Do not forget the leading and trailing chars: [ and ]
    * These special characters must be escaped: \ and " --> \ to \\ and " to \"
    * Each parameter in your commandline should be wrapped by " and seperated by a ,
    * Use %s as wildcard for the url
    * Do not press enter to confirm changes. Just unfocus the field by clicking somewhere else.
  10. Browser Loop: Enable/Disable the browser loop

Troubleshooting

Excluding 3rd party browser-addon related issues:
No matter which issue with browser captchas you are having: First disable all of your installed browser addons except our myjdownloader addon and check again!
Often, browser addons can cause issues with browser captchas as they can intervene with our addon at any time and prohibit it from working correctly.

For users of browser addons "NoScript" or any kind of adblockers: Meet the following settings to ensure that these addons do not blick our browser solver:

  • Disable NoScript for http://127.0.0.1/
  • Disable AdBlock for http://127.0.0.1/ this may not be required

Workarounds for myjdownloader browser addon bugs: Use another browser for captcha solving

It can sometimes happen that there are bugs in our browser addon for Chrome or Firefox.
Because these addons are never updated at the same time and often have to go through a review process before they are released via the browsers' respective stores, it can be a good idea to at least temporarily switch the browser for testing. E.g. you are having an issue with browser solving in Chrome: Install Firefox and check if it works then!

Auto-Click doesn't work

Software which interferes with your mouse e.g. screen capture applications or your systems magnifier application e.g. Windows magnifier will most likely lead to a failure of auto-click.
Also note that auto-click is only available for reCaptchaV2.
It is not available for e.g. reCaptchaV3 (also called "Invisible reCaptcha"), hcaptcha or any other browser captchas.
Scroll to the beginning of this article to see examples of these different captcha types.



Attachments 
 
 jd2-settings-captchas-in_browser.png (155.92 KB)
 example_reCaptchaV2_with_description.png (7.68 KB)
 example_reCaptchaV3_with_description.png (4.85 KB)
 example_hcaptcha_com_with_description.png (6.40 KB)
(762 vote(s))
Helpful
Not helpful