Latest Articles and Project Updates

Site overhaul coming – apologies for broken links and other bugs

tl;dr: Mobilegeddon (who thinks up these names?) has finally provided the kick I need to get this site overhauled. Apologies in advance for things like messed up formatting and randomly broken links. I first threw together on WordPress 2.0. To give you an idea of what life was like back then (2006), the release […] (read more)

Temperature at max value (+20)
Simple algorithms for adjusting image temperature and tint

I've already talked at length about converting a temperature (in Kelvin) to an RGB triplet. But what if you simply want to adjust an image's temperature, without caring about the specifics of it? This article is for you. As a bonus, source code is also provided for tint adjustments. (read more)

A new version of PhotoDemon includes an overhauled interface, lots of new tools (including cool things like Content-Aware resize), WebP and JPEG-XR support, and so much more.  Get it here.
PhotoDemon 6.2 beta live – testers welcome!

The latest version of PhotoDemon includes an overhauled interface, cool new tools (like Content-Aware resize), WebP and JPEG-XR support, and so much more. Get it here. (read more)

The final splash screen for version 6.0.  Thank you again to all the talented contributors that made this release possible!
PhotoDemon 6.0 is now live at

After a successful (and relatively bug-free!) beta testing session, PhotoDemon 6.0 has been deemed "ready for mass consumption". Normally this is where I would put a download link, but let me instead refer you to the new home of all things PhotoDemon: (read more)


The Writer

Tanner Helland Writing

Fiction. Non-fiction. Essays. Humor. Guides. Reviews. All this (and more) can be found in the writing directory.

The Scientist

Tanner Helland Science and Programming

Fifteen years of free, open-source science and education projects are available for download at the programming directory.

The Musician

Tanner Helland Music

Forty-five original songs are now available for download and streaming at the music directory.

About Tanner


I'm a bioinformaticist by trade. For most of my career, that skill set paid the bills while I used my evenings and weekends to write books, compose music, and work on a variety of open-source programming projects. Eventually - and fortunately - I came to the realization that while I greatly enjoy science, my heart lies elsewhere, so in 2011, I quit my job and took up writing full-time. In the meantime, I use this site to collect my many side projects, which I hope is more useful than hiding them in an obscure desk drawer.
Kind regards to all.   ~Tanner