JWT is not encryption. A 3 a.m. privilege-escalation alert forced me to tear JWT apart — from alg:none and RS256/HS256 confusion to weak keys and kid injection. JWT isn't broken; we just use it wrong.
It starts with a network request Somewhere around 3 a.m., on a project that is already running late, you open DevTools and refresh the page. Under the…
BMI (Body Mass Index) is a widely used tool to evaluate weight status based on height and weight. Learn how to calculate it, understand the normal ranges, and discover why BMI alone isn't enough to judge your health.
Confused by EPUB, MOBI, AZW3, and AZW? This guide breaks down the differences between these ebook formats and helps you pick the right one.
After testing my reaction time 50 times, I averaged 268ms—far slower than expected. It turns out that what most of us call 'reaction speed' is often just a benchmark of our equipment.
Many people buy 144Hz or 240Hz monitors but never check if they're actually set up correctly. This tool and guide help you verify your screen's real refresh rate and fix common pitfalls.
ToolAct reached a milestone with over 500 daily visits. A small number that represents growing recognition and a step forward for the free online tools site.
Discover the science behind human vision, refresh rates, and why 24 fps feels smooth in movies but choppy in games. Learn how motion blur and persistence of vision shape your screen experience.
The author created the online tools website ToolAct out of dissatisfaction with existing tool sites, such as too many ads and slow speeds. It started as a personal practice project, focusing on page load speed and performance optimization. Development involved complex factors like internationalization and SEO, while sticking to a free principle with no usage barriers. Through continuous learning and improvement, ToolAct aims to provide fast, convenient tools that help users solve problems efficiently.
ToolAct is completely free and maintained by a solo developer. If it helped you, consider buying me a coffee ☕
