Online Tools

I have come across two online tools over the last few weeks which I have found really useful. I normally use offline programs to edit images, create images with transparent backgrounds and create diagrams and flow charts.

Online Developer Tools

There are some times that using an offline, installed program is not possible. Some companies restrict the type of programs that are installed, especially if they are free and open source. The reason for this list that I am going to build, is to help point people to websites that work, and also as a reminder to me when I need them again and don’t have access to my browser bookmarks.

I have also listed some of the offline tools that I use which offer a lot more functionality.

UML Diagrams and flowcharts (online):

  • is a free online diagram drawing application for workflow, BPM, org charts, UML, ER, network diagrams. There is also an addon for Google Chrome which can be found here.

Image Creators and Editors (online):

  • Free Online Image Editor is an editor where you can create your own animated gifs, resize and crop images, create images with transparent backgrounds and many other image manipulation tools.
  • ConvertICO is a converter where you are able to convert images into application icons for desktop applications and favicons for websites.

Image Creators and Editors (offline):

  • Inkscape is an open-source vector graphics editor similar to Adobe Illustrator, Corel Draw, Freehand, or Xara X. What sets Inkscape apart is its use of Scalable Vector Graphics (SVG), an open XML-based W3C standard, as the native format.
  • GIMP is a raster graphics editor used for image retouching and editing, free-form drawing, resizing, cropping, photo-montages, converting between different image formats, and more specialized tasks.

Project Management:

  • Trello is the fastest, easiest way to organize anything, from your day-to-day work, to a favourite side project, to your greatest life plans.


  • Revert by LabVIEW Hacker is an online tool that can be used to convert vi’s to previous versions of LabVIEW. This tool is still in Beta form, but works and is really useful when you don’t have access to the latest version of LabVIEW.

General Programming:

  • Regular Expressions are a a pain to get your head around. I have found that you either get them or you don’t. I really battle trying to figure them out. I came across this website today where you can type in your string and regex, and you can see the result. I found this much easier than running the script over and over while trying to get it correct. There are many other websites that have similar tools, but I found this one to be the best to use.

These are the ones that I have been using and have found to be really helpful lately. Please feel free to add others to the comments and I will then update the list above.


LabVIEW: Twitter toolkit

I have had this post in my head for a while but just haven’t gotten around typing it up yet. I came across the LabVIEW Twitter Toolkit some time ago and gave it a go. It took a while to understand all the security features, but once I got my head around that, everything went smoothly.

The place to start is here. This will guide you through setting up your Twitter Developer Account and creating your application credentials.
A few points to take note of:
  • You must add a callback URL, even if you just add your website. This field must be a valid URL and cannot be blank.
  • Your application must have read and write access.
  • Generate your Access Token if it has not been generated yet.
I have edited the basic single tweet example to count characters etc. Here is my version of the block diagram.
I count the characters in the Tweet string and if more than 140 are entered, I disable the Tweet button and change the font colour to red. The block diagram looks as follows.
So the idea is, the first time you run the program after you have set up your Twitter Application, enter only the Consumer Key and Consumer Secret. Then type a tweet and press the Tweet button. A browser tab will open and ask you to verify your application. Do this and then the tweet will be posted.
Now enter your Access Credentials and use them for every tweet in the future. By explicitly entering the Access Credentials, you prevent having to authorise your application every time you send a tweet.
That is all there is to it. Once you have it all set up sending tweets from LabVIEW is pretty simple thanks to the toolkit.