π The Blog
Guides, tips and how-tos for getting the most out of free online tools.
MD5 for checksums, SHA-256 for integrity, bcrypt for passwords β the three hashes developers confuse, what each is for, and when each is dangerous.
What #7C5CFF, rgb(124,92,255) and hsl(252,100%,68%) really mean β the three ways to write a color, when to use each, and a free converter.
Single or double spaced, 11pt or 12pt β how word counts map to pages for essays, novels and reports, with a free words-to-pages converter.
A 50% markup is not a 50% margin β confusing the two is why some businesses lose money on every sale. The difference, the formulas, and free calculators.
Let customers message you on WhatsApp in one tap β with a pre-filled message β without saving your number. The wa.me link format and a free generator.
Those long strings like 550e8400-e29b-41d4-a716-446655440000 β what they are, why they almost never collide, and when to use them instead of IDs.
Those π―πͺπ·π¬π bio fonts aren't fonts at all β they're Unicode characters. How they work, where they break, and free generators to make your own.
Why waking at 7 hours can feel worse than 6 β how 90-minute sleep cycles work, and how to time bed and alarm so you wake up refreshed.
Going freelance? Your old salary is not your hourly rate. How to convert it honestly β accounting for unpaid time, taxes and fees β with free calculators.
Know what a road trip will cost in fuel before you leave β the simple formula, how mileage and price change it, and a free fuel cost calculator.
That "Lorem ipsum dolor sit amet" placeholder text has a 500-year history and a real purpose. What it is, why it beats real text, and a free generator.
Regular expressions look like line noise but follow simple rules. The core syntax, the patterns you'll reuse forever, and a free live regex tester.