Custom reCaptcha is a plugin that gives you control over the look of Google's reCaptcha. It can replace the standard reCaptcha plugin packaged with Joomla! and adds solutions to make any version of the reCaptcha widget responsive.
- supports version 1 (outdated by Google), version 2 (no captcha reCaptcha) or the invisible widget,
- use test mode to try reCaptcha without getting domain keys (test keys are used),
- force challenges in version 2,
- add Google's legal info in place for the invisible flavor of the widget,
- control CSS styles,
- supports multiple reCaptchas on a same page,
- make the widgets responsive,
- supports SSL and RTL pages,
- Joomla 3.9 with privacy tools ready.
If you need Google reCaptcha v2 for Joomla 2.5, check the Rescue Me reCaptcha plugin at https://simplifyyourweb.com/documentation/topics/844-google-recaptcha-v2-for-joomla-2-5
More information at https://simplifyyourweb.com/free-products/custom-recaptcha