* Privoxy team. https://www.privoxy.org/
*
* Based on the GIF file format specification (see
- * http://tronche.com/computer-graphics/gif/gif89a.html)
+ * https://tronche.com/computer-graphics/gif/gif89a.html)
* and ideas from the Image::DeAnim Perl module by
* Ken MacFarlane, <ksm+cpan@universal.dca.net>
*