libcaptcha

Libcaptcha

Highly customizable captcha making library.

Features

• TTF font support
• UTF-8 support, you can use any glyph
• An easy API (I suppose)
• Zero dependencies
• Entirely written in C

How to install

It is as simple as

./configure
make
make install

How to use

Check out examples

Get familiar with general concept. example1.c

How to make a random sized glyphs. example2.c

Apply random positions for glyphs. example3.c

Get familiar with patterns made from png images. example4.c

Patterns, patterns everywhere. example5.c

Some crazy stuff. example6.c

Don't forget to use lc_free() to free all the stuff libcaptcha returns to you.

I've noticed that it is very easy to get lost sometimes, just use valgrind.

License

GPLv2