About
"About" tools
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Calculator
"Calculator" tools
Acceleration calculator
Battery calculator
Distance calculator
EV mileage calculator
Exponential growth
Fuel Cost calculator
Natural Gas calculator
Gladwell's 10000 hours
Speed converter
Frequency Calculator
Electrical power
Wavelength Calculator
Mortgage loan calculator
Code
"Code" tools
Bash boilerplate
Color
"Color" tools
CMYK conversion
HTML Color list
Pantone Color list
RGB conversion
Websafe Color list
Data
"Data" tools
Bandwidth convert
Download calculator
Data size calculator
Music
"Music" tools
Beats-per-minute
Audio delay
Music Frequency
Song length
Music Scale
Tap your tempo
Photo
"Photo" tools
Aspect ratio
Composition Calculator
Depth-of-Field Calculator
DPI calculator
Image filesize calculator
Light calculator (EV)
Megapixel calculator
Megapixel Aspects
Video
"Video" tools
Audio file size calculator
Common bitrates
DCP file size
Foot-Lambert Calculator
Screen size
Video bitrate
Frame rate convert
Video file size calculator
Web
"Web" tools
Content Security Policy
Redirection check
Security Policy Framework check
HTTPS config check
HTML char map
Emoji char map
HTML encoder
SEO Performance
History of toolstud.io
2006: tinkering
I started developing small web tools all the way back in 2004. I think the first one was a simple RGB ⇆ CMYK converter. The only scripting language I knew back then was ASP (Windows/IIS), which means that after a couple of years, I had developed a set of ASP-based tools. They followed my interests: musical, crypto, sudoku, web-development... I learned a lot about HTML, CSS, JavaScript, ASP while developing them, the experience helped me a lot. In 2006 I decided to make them all available under one domain name. This was
web.forret.com
.
2009: web.forret.com
Then, around 2009 I started working more and more with PHP. After a while, it became hard to go back and fix ASP bugs, so I left web.forret.com as it was, on its ASP island and dove into this new PHP world. And I started developing tools in PHP, things like an RSS feed checker, a depth-of-field calculator. However, I couldn't put these tools on the same server as the older ones, because that server only did ASP, no PHP. I started by parking them under tools.forret.com, later hdslr-cinema.com with some others, and it just looked like a big mess. Different layouts, different subdomains, different logic.
2015: start of toolstud.io
In 2015 I finally decided that I should clean up and consolidate. I purchased this new domain name
toolstud.io
, used better PHP templating, source code version control, a more modern responsive Bootstrap layout. And I started the work of converting my ASP-based tools to PHP. It was no rocket science, and every tool in PHP works better than the old ASP one, but I just need to find the time.
2016: only toolstud.io
In June 2016 my old hosting (the ASP one) expired, I forgot to pay in time, and I decided that I would redirect all traffic to toolstud.io, even if it didn't have all the old tools yet. It just doesn't make any sense to pay for two different hosts for a small side-project.
2019: Laravel influence
In 2019, I started developing in Laravel and as a result, became more critical on code style and started using more external libraries. This website hasn't been ported to Laravel yet, because I haven't found the time yet. I did upgrade to the latest version of bootstrap, fontawesome, jquery ...
I hope you enjoy these tools and that they make your life easier.
Cheers, Peter.