An open relay SMTP server accepts and forwards mail from any sender to any recipient, regardless of whether either party has a legitimate relationship with the…
Manual API testing is often the fastest way to understand how a service behaves before a full test suite exists. An online API request builder gives developers…
A timestamp can look precise while still causing confusion. A calendar entry marked 9:00 am in Sydney is not the same moment as 9:00 am in Perth, London or New…
A browser-based password generator can be a small JavaScript project with a surprisingly important security role. It should produce unpredictable values, let…
A DNS cache purge simulator is a browser-based testing tool that imitates what happens when a cached domain record expires, changes, or is manually cleared. It…
JSON Web Tokens carry identity and permissions across modern web stacks, from Australian banking apps to community news sites. They are compact, signed strings…
ASCII art has been a quirky part of computing culture since the early days of telegraph machines and mainframe terminals. Before graphics cards could render…
A ping sweep is one of the simplest ways to map which devices are actually awake on a local network. You send a quick echo request across a range of IP…
For anyone building web pages, blog posts, or even a simple landing page for a Brisbane side hustle, special characters such as ampersands, accented letters,…