Evergreen Social and Tech Guides | PINFOX

How is BMI calculated and what do weight categories mean Core facts on the formula, WHO thresholds, and known limitations.

Chronological age, biological age, legal thresholds, and practical age math for forms, HR, insurance, and long-term planning.

Understand metric vs imperial systems, ratio conversions, precision rules, and practical unit conversion workflows.

What are HEX, RGB, and HSL color codes Color models, color harmony, and how to use colors confidently in CSS and web design.

Screen recording, video editing basics, format and codec comparison, quality settings, and social media video specs for YouTube, Instagram and TikTok.

Evergreen fundamentals: lossy/lossless formats, loudness normalization, listening translation and long-term archive strategy.

Global VAT rate comparison, VAT-like tax models, and practical VAT handling for online sales.

Learn password types, strong credential design, MFA, hash/salt basics, and common attack patterns in one practical evergreen guide.

Evergreen guide to JPG, PNG, WEBP and AVIF formats, plus practical compression and quality strategy.

Rich evergreen guide on semantic HTML, performance, SEO, accessibility, and responsive web standards.

Practical PDF to Word workflows: editable text extraction, scanned PDF limitations, OCR tips, and format-safe editing steps.

Learn how to read ping, jitter, download and upload values correctly, and build a reliable speed-testing routine.

Gross vs net salary basics, historical 2021 tax-rate context, and practical conversion examples.