Practical how-tos for everyday tooling
Short, actionable articles that explain the why — then link straight into free privacy-first tools you can use in your browser.
How to Convert HEX to RGB for CSS (With Examples)
Learn when to use HEX vs RGB in CSS, how HEX to RGB conversion works, and how to convert colors instantly with a free browser tool.
Read guideConvert PNG to WebP for Faster Websites (Practical Guide)
Why WebP beats PNG for many web images, when to keep PNG, and how to convert PNG to WebP privately in your browser.
Read guideSHA-256 vs MD5: Which Hash Should You Use?
A clear comparison of MD5 and SHA-256 for checksums, integrity checks, and password storage — plus when each still makes sense.
Read guideGenerate UUID v7 for Databases (Why Sortable IDs Help)
Understand UUID v7 time-ordered IDs, why they help database indexes, and how to generate them safely in your browser.
Read guideHow to Create a QR Code with a Logo (Readable & On-Brand)
Step-by-step guide to generating a branded QR code with a logo, colors, and contrast tips so scanners still read reliably.
Read guideHow to Write an Invoice as a Freelancer (Step-by-Step + Checklist)
Exactly what belongs on a freelance invoice — numbering, payment terms, tax lines, and bank details — plus a step-by-step walkthrough and a free browser-based invoice generator.
Read guideInvoice Payment Terms Explained: Net 30, Due on Receipt & Getting Paid Faster
What Net 15, Net 30, EOM, and 2/10 Net 30 actually mean, which terms get freelancers paid fastest, and how to word deposits and late fees on an invoice.
Read guideJSON vs XML: Key Differences, Formatting, and Converting Between Them
What really differs between JSON and XML, how to format both so errors jump out, and the three things that go wrong when you convert JSON to XML or back.
Read guideEveryday Maths People Get Wrong (and the Free Calculators That Fix It)
Stacked discounts, rent rises, sales tax, oven temperatures and BMI: the everyday sums people get wrong, with worked examples and free calculators that run in your browser.
Read guideFree Invoice Generator vs Invoicing Software: Which Do Freelancers Actually Need?
An honest comparison of free browser-based invoice generators and paid invoicing software like QuickBooks or FreshBooks: cost per invoice, privacy, features, and when it's worth switching.
Read guide10 Free Online Tools for Developers (and the Terminal One-Liner for Each)
Ten small developer chores, from decoding a JWT and reading a Unix timestamp to Base64, regex and diffs. Each one comes with a free browser tool, the terminal one-liner, and the gotcha that wastes an afternoon.
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