Toolsfy Blog
Discover guides, tutorials, tips, and best practices behind Toolsfy utilities to help you work and build more efficiently.
BMI, Body Composition, and Health: Science-Based Strategies
Understand BMI’s limits, body fat, muscle mass, and evidence-based training and nutrition strategies for sustainable health.
Unit Conversion in Engineering: Practical Patterns and Pitfalls
A practical handbook for unit conversion across length, mass, temperature, and data prefixes. Avoid hidden bugs with consistent rules.
Unix Timestamp & Timezone: Complete Guide for Web Systems
Understand Unix time, UTC, DST, time zones, and cross-platform handling to avoid time-related bugs in production.
A Complete Guide to Color Models and Frontend Color Systems: From HEX/RGB/HSL to Accessibility
A systematic introduction to common color models, their conversion relationships, practical color workflows, and accessibility (contrast) guidelines, with online tools for verification.
A Complete Practical Guide to Regular Expressions: From Basics to Advanced (with Debugging Strategies and Common Pitfalls)
An in-depth tutorial covering character classes, quantifiers, grouping, assertions, greediness vs. laziness, Unicode and multiline modes, with practical examples and debugging strategies.
Word Count and Readability: Write Content Readers Love
Balance word count and clarity to improve engagement. Learn readability metrics and practical editing tips.
Aspect Ratios for Social Media: Complete Image Size Guide
Optimize your images for platforms like Instagram, X, and YouTube with correct aspect ratios and dimensions.
UUID v4 Explained: Collision Probability and Real-World Use Cases
Learn how UUID v4 works, why collisions are extremely unlikely, and where to use it safely.
Strong Passwords: Practical Best Practices for 2026
Reduce account takeover risks with modern password strategies, generators, and storage recommendations.
JSON Formatting: Common Errors and Quick Fixes
Avoid broken APIs and hard-to-read payloads. Learn typical JSON mistakes and how to fix them fast.
Base64 Encoder: Complete Guide and Practical Use Cases
Understand Base64 encoding, when to use it, and pitfalls to avoid. Includes URL-safe variants and performance tips.
SEO-Friendly URLs: Slugify Best Practices
Clean, readable URLs improve rankings and CTR. Learn how to generate perfect slugs and avoid common pitfalls.