ToolBoxOnline Blog

Ever seen a number like 1718236800 and wondered what date it represents? Here's what Unix timestamps are, why they exist, and how to convert them without coding.

Seven people, one check, and everyone ordered different things. Here's how a tip calculator saves you from the post-dinner math headache and gets the split right every time.

40% off $67.99 — quick, what is the final price? Most people get this wrong in their head. We tested mental math shortcuts against a discount calculator to see how far off they land.

You need 50 character names for a story, game, or test dataset. You could brainstorm for three hours, or use a random name generator for 30 seconds. We compared both approaches on quality, speed, and variety.

Your age in years is the headline number, but an age calculator reveals months, weeks, days, and even the day of the week you were born. Here's what each number means and why it matters.

Your color combo looks fine to you but fails WCAG for 1 in 12 people. Here's how to check contrast ratio in seconds without a design degree.

Someone sent you a data URI or a raw Base64 string and you need to actually see the image. No command line, no script. Just paste and view.

You don't always have your dev setup. Here's when a browser code formatter beats Prettier, when it doesn't, and how to choose the right tool for the job.

SVG files from design tools are bloated with metadata, comments, and editor cruft. I tested 4 SVG minification methods on 30 real-world files to find the winner.

HTML to Markdown isn't just about pretty formatting. It's about making content portable across platforms. Here's when the conversion matters and how to do it right.

You got a QR code as an image, not a link you can click. Your phone is in the other room. Here's how to scan any QR code directly from your browser in seconds.

Missing anchors, misplaced quantifiers, and forgotten flags break regex. A regex tester catches these edge cases instantly.