Blog

Guides, tutorials, and tips on online tools, privacy, and productivity.

Explore our 27 articles. They include step-by-step guides for using our tools and posts on online privacy, cryptography, web performance, and development best practices.

speed test7 min·Feb 1, 2026

Internet Speed Test: How It Works & Tips for Faster Internet

Learn how internet speed tests work, what download/upload/ping mean, and practical tips to improve your connection speed.

privacy10 min·Feb 10, 2026

Online Privacy Guide 2026: Protect Your Digital Life

Comprehensive guide to online privacy: VPNs, browser security, password management, two-factor authentication, and privacy-focused tools.

JSON9 min·Mar 9, 2026

JSON APIs for Beginners: Format, Validate, Debug

A beginner-friendly guide to JSON and APIs: syntax, making requests, debugging common errors, validation, and essential tools.

CSS8 min·Mar 8, 2026

CSS Color Systems: HEX, RGB, HSL & When to Use Each

A practical guide to CSS color formats for developers: HEX, RGB, HSL, oklch, custom properties, and modern color features.

code review8 min·Mar 8, 2026

Text Comparison for Code Review: Best Practices

Learn how to use diff tools effectively for code review — reading diffs, reviewing PRs, giving feedback, and integrating comparison into your workflow.

encoding9 min·Mar 6, 2026

Understanding Encoding: Base64, URL, UTF-8 Explained

A developer deep-dive into encoding systems: how ASCII, UTF-8, Base64, and URL encoding work, why they exist, and how to avoid encoding bugs.

QR7 min·Mar 4, 2026

QR Codes for Small Business: Marketing Guide 2026

How small businesses can use QR codes for menus, payments, loyalty programs, and marketing campaigns — with real-world examples.

images9 min·Mar 2, 2026

How to Optimize Images for Web Performance (Core Web Vitals)

Master image optimization for the web: modern formats, lazy loading, responsive images, and how to improve your Core Web Vitals scores.

passwords8 min·Feb 28, 2026

Password Manager vs Browser Passwords: The Truth

Compare dedicated password managers with built-in browser password storage — security, features, and which one to trust with your credentials.

PDF8 min·Feb 26, 2026

The Complete Guide to PDF Accessibility

Learn how to create accessible PDFs that meet WCAG and PDF/UA standards — tagged structure, alt text, reading order, and more.

VPN8 min·Feb 24, 2026

VPN vs Proxy: What Actually Hides Your IP?

Understand the real differences between VPNs and proxies, how each hides your IP, and which one you should use for privacy and security.

developer9 min·Feb 22, 2026

10 Free Online Tools Every Developer Needs in 2026

A curated roundup of the best free browser-based developer tools for text, code, images, PDFs, and more — no sign-up required.

diff7 min·Feb 20, 2026

Text Diff Guide: How to Compare Documents & Code

Learn how text diff works, when to use it for code review and document comparison, and how to interpret additions and removals in our free diff tool.

lorem ipsum6 min·Feb 18, 2026

Lorem Ipsum Guide: Placeholder Text for Design & Development

Learn what Lorem Ipsum is, its history, when to use placeholder text in design and development, and how to generate it instantly with our free tool.

base647 min·Feb 15, 2026

Base64 Encoding Explained: How It Works & When to Use It

Understanding Base64 encoding: the algorithm, use cases in web development, data URIs, performance considerations, and common misconceptions.

markdown7 min·Feb 5, 2026

Markdown Guide for Beginners: Write Better Documentation

Complete Markdown tutorial from basics to advanced: headings, lists, code blocks, tables, links, images, and where Markdown is used.

hash9 min·Jan 25, 2026

Hash Functions Explained: MD5, SHA-256 & Beyond

Understanding hash functions: how they work, common algorithms (MD5, SHA-1, SHA-256, SHA-512), use cases, and why they matter for security.

color8 min·Jan 20, 2026

Color Theory for Web Developers

Master color theory for the web: learn about color models, accessibility, contrast ratios, palettes, and how to choose the perfect colors for your projects.

JSON8 min·Jan 15, 2026

JSON Formatting & Validation Guide

Complete guide to JSON: formatting, validation, minification, common errors, and best practices for working with JSON data.

text6 min·Jan 10, 2026

Text Tools Every Developer Needs

Essential text manipulation tools for developers: word counting, case conversion, Base64 encoding, URL encoding, and more.

images7 min·Jan 5, 2026

Image Compression: Reduce Size Without Losing Quality

Learn how image compression works, the difference between lossy and lossless, and how to optimize images for web and social media.

units7 min·Dec 25, 2025

Unit Conversion Guide: Length, Weight, Temperature & More

Master unit conversions with our comprehensive guide covering length, weight, temperature, volume, area, speed, and more.

currency6 min·Dec 20, 2025

How to Convert Currencies Online - Complete Guide

Learn how to convert currencies with live exchange rates, tips for international transfers, and how to get the best rates.

QR6 min·Dec 15, 2025

QR Code Guide: Create, Customize & Track

Everything you need to know about QR codes: how they work, how to create them, customization options, and best practices.

security8 min·Dec 10, 2025

How to Generate Secure Passwords in 2026

Complete guide to creating strong, uncrackable passwords. Learn about entropy, password managers, and best practices.

PDF5 min·Dec 5, 2025

How to Merge PDFs Online for Free

Step-by-step guide to merging multiple PDF files into one document online, without uploading to any server.

IP7 min·Dec 1, 2025

What Is My IP? Public vs Private IPs Explained

Learn the difference between public and private IP addresses, how to find yours, and why it matters for your online privacy and security.