WordPress.org

Ready to get started?Download WordPress

Plugin Directory

WP Captcha-Free

WP Captcha-Free is a lightweight plugin that blocks automated comment spam without using captcha (image verfication).

How does WP Captcha-Free work?

WP Captcha-Free generates a hash (aka token) based on several parameters like time (with a cushion of about 1 hour), post id, IP address, and browser user-agent which should not change between requests. When the comment form is posted the plugin uses ajax to get a hash value and adds it to a hidden field. On the server side it verifies if the hash is valid or not. It uses adds random salt to the hash so that it cannot be guessed.

Is WP Captcha-Free better than Akismet?

That is not a proper comparison. Akismet blocks comment spam by analyzing its content while WP Captcha-Free does so by checking how it was submitted. I would suggest using WP Captcha-Free in conjunction with Akismet for best results.

Is JavaScript required to comment?

Yes, WP Captcha-Free uses JavaScript/AJAX to add another layer of security and to make it compatible with caching plugins like WP-Cache.

Are Cookies required to comment?

No, WP Captcha-Free does not use cookies.

What happens with pingbacks and trackbacks?

WP Captcha-Free does not filter pingbacks and trackbacks.

Can you add a feature X?

Let me know, I will try if its useful enough and I have time for it.

Requires: 2.3 or higher
Compatible up to: 3.4.2
Last Updated: 2012-7-27
Downloads: 111,382

Ratings

3 stars
3.8 out of 5 stars

Support

Got something to say? Need help?

Compatibility

+
=
Not enough data

0 people say it works.
0 people say it's broken.

100,1,1
100,1,1
0,1,0
100,4,4
100,2,2
50,4,2
33,3,1
25,4,1
75,4,3
100,1,1
100,6,6
0,2,0
100,1,1
50,4,2 50,2,1
50,4,2
33,3,1
100,1,1
100,1,1
100,1,1
100,2,2
0,1,0
100,1,1
50,2,1
100,1,1
100,1,1