Browse source, contribute, or download on GitHub.



Enjoying Securimage?

If you use Securimage and have found it helpful, please consider donating. The suggested contribution is $3 USD but any amount is appreciated. Donation is not required as Securimage is, and always will be free & open-source.  Thank you for your support.

Version 3.5.4 (August 27, 2014)

Securimage 3.5.4
(zip download) – md5 checksum: 9e6782593e49518d94ffe95174077500
(tar.gz download) – md5 checksum: c886b79a13e7e37c907ad5b39dba3a64

You may also browse and download the Securimage Git repository which has the latest code and more examples that are not included in the above downloads.


Securimage Test Script

Securimage Test Script (zip download) (php source) [2 kb]
Upload this php script to your server and it will test your ability to run Securimage.


Audio Translations

How to create audio files in English and other languages.


Brazilian Portuguese Audio (pt-br)
Contributed by Flavio Lucio – ITECH SOLUTION


Brazilian Portuguese Audio (2) (pt-br)
Contributed by Messias Nascimento
Contains 2 sets of audio, one standard and one with pronunciation tips (C Casa, D Dado, etc)

Dutch Audio (nl)


French Audio (fr)


German Audio (de)
Contributed by Sven Wachsmuth


Italian Audio (it)
Contributed by Matteo Canella


Spanish Audio (es)
Need Spanish translation. 16-Bit, Mono, 11,025 Samples/second. See details.


Turkish Audio (tr)


Previous Versions

Version 2.0.2 (Jan 07, 2011)
Securimage 2.0.2 (zip download) [1.2 Mb] – (tar.gz download) [1.2 Mb]

Securimage 3.5 is the recommended version – only download this version if you need to use GD Fonts instead of TTF fonts.


40 comments “Download”

tu great ho.. tofa kabul karo…..

Very  nice work,,,,,,,,,,,,,,,,,,

In the github
In Synopsis section
form metod
form method
the method spelling is wrong…Please change it…

Thanks for the Awesome script….

Thanks for pointing that out. I will change it.

great captcha coding! i’ve been using this library in the development of student information system. thanks a lot!

Works great. Thank you!!

Thanks captcha scripts to help prevent spam for my web.

There is a typo in README.txt in the line of “”, should be “method”, it spent me several minutes to run a test.

Thanks for the nice script :D

Thanks for share your great job!

This code is nicely done. I installed it on my personal vCard site at because I was getting a lot of spambot email. This has proven to be successful. Thanks. I will be recommending

Thanks for such a great library

I would say this is better than Google’s CAPTCHA – it takes up less space, looks cleaner, more customisable – and – most importantly, easier to decipher! v.nice :)

thank you for this much of help sir.. :) ;)

Thank you. This piece of code is great!

Just a quick note to say “thank-you”, this is a great piece of software!  :-D

I have used it on multiple sites now and it just keeps getting better, I first used it at version 0.3, now see version 3.0.2 is nearly out in the wild.  Cool.

Thanks for the script, I use it on few of my websites and it works great.

Wow its amazing! Thanks…

This rocks. Thanks for the great work! I was looking for a way to make the overall image smaller but keep the text size the same. Not sure if it’s possible or not.

thanks so much. its really helpful! ^^,

Thank you so much for the code and the audio pack (nl)
I hope you will support this project for a long time

Flavio Lucio, Thanks for the portuguese audio translations!!!

i am in need of GD support, is there any captcha that can be done without the GD.


Without GD you will be limited, but look up in Google “Figlet Captcha” and you may find some that use that. It generates an all text/html word captcha “image”.

Thank a lot for your nice library

Thanks for the security script. it has made my life easier.

very useful code with a very easy install
many thanks

Million thanks to Juan Carlos Terrasa!!! Va de lujo!!! :)

Thanks for the Dutch Audio translations. It works great! I’m very grateful.

Thanks for this library!

Well done. Thanks!

Thanks! The site looks very nice now and the script works beautifully (Well, it is still not live but I have already implemented it in my website and it works great!)


Thanks for the nice script :D

Thanks for this library!

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