Captcha - HashCash

Enhance Joomla form security with the Captcha - Hashcash plugin. This free tool uses lightweight, client-side proof-of-work to block spam bots without user interaction. It integrates seamlessly with Joomla’s core captcha system, protecting forms like login, registration, or contact pages. Ideal for reducing spam while maintaining user experience.

Extension Page: Captcha - HashCash

Captcha - HashCash 5.5.2 Stable

Released on: Tuesday, 16 December 2025 16:15

This update preloads the worker.js file WITH the media version, and updates the main javascript to load the worker using the media version - saves a round trip delay in starting the worker.

Captcha - HashCash 5.5.2

Joomla! 4.x Joomla! 5.x Joomla! 6.x

File size 23.27 Kb
MD5 Signature fa35f33c4b632f768ae468d774d6645a
SHA1 Signature 6565cd6783b0f5587aed983ca8369be6545136de
SHA-256 Signature 09197b4885a0c03b299aea17b4a49377f9eca5db17ace8c91588e76638d5c08a
SHA-384 Signature 6efa4cb07b703852c57855a11325ee6f2bea23dd5f2b8e0dc7cb1d23641170804d29d3926b38d205cb6c22d7faeedaa4
SHA-512 Signature 8d0790633005166d8e49be04c0a447d22125dcf404f63260b4af2d8f0c703f9934c3a053f0be95d25335d37929cebfb453f20f6528fc42280f44c49df113eca1
Compatibility Joomla! 4.x Joomla! 5.x Joomla! 6.x