Blog
Guides that explain what our tools compute — and why.
What Your BMI Actually Tells You
2026-08-02 · How body mass index is calculated, what the categories mean, and its limits.
How Loan Interest Really Works
2026-07-14 · Amortization, monthly payments, and why early payments save so much interest.
What Is Base64 and When Should You Use It?
2026-08-20 · A plain-English guide to Base64 encoding with everyday examples.
How JWT Tokens Work (and How to Inspect Them Safely)
2026-08-28 · Header, payload, signature — and why you should never paste tokens into random sites.
How to Format JSON (and Debug It When It Breaks)
2026-09-10 · Pretty-printing, validation errors, and the commas that ruin everything.
Compound Interest Explained With Real Numbers
2026-09-12 · Why starting early beats saving more, shown step by step.
How to Create a QR Code That Actually Scans
2026-09-11 · Payload formats for URLs, WiFi and contacts, plus print-size rules.
A Practical Guide to Tipping and Splitting Bills
2026-06-20 · Standard percentages, per-person math, and edge cases like tax and discounts.
How to Compress a PDF Without Ruining Quality
2026-09-01 · Why PDFs get big and the practical levers that shrink them.
How to Convert JPG to PDF (and When Image-to-PDF Makes Sense)
2026-09-05 · From photos to shareable documents: the right settings and order of operations.
How to Reduce Image File Size for the Web
2026-09-08 · Format choice, dimensions and compression: the three levers that matter.
The PDF Format, Explained Simply
2026-09-06 · What a PDF actually contains and why it prints the same everywhere.
JPEG vs PNG vs WebP vs SVG: Which Image Format When?
2026-09-09 · A practical decision guide with no jargon.
How to Unscramble Letters for Scrabble and Word Games
2026-10-07 · Blank tiles, bingo hunts, and how anagram solvers actually find words.
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