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Practical code notes, tools, and guided learning for developers.

Practical guides, developer tools, and tutorials for modern web developers, with the same focused tone across writing, utilities, and learning tracks.

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Articles, utilities, and guided learning tracks shaped like a developer workspace: deliberate, practical, and fast to scan in both dark and light mode.

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AI Coding Tools Pricing in 2026 - The Flat-Rate Era Is Over

AI Tools

AI Coding Tools Pricing in 2026 - The Flat-Rate Era Is Over

Every major AI coding tool raised its price or restructured plans in April 2026. Here is what changed, why agentic workflows broke the old economics, and how to figure out what you should actually be paying.

Apr 28, 20267 min read
02

AI agents

GitHub Agentic Workflows Safe-Outputs Architecture for Automated Code Review

Set up production-ready AI code review using GitHub Agentic Workflows' safe-outputs security model, threat detection, and compile-time constraints.

Apr 28, 202603

57

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Color Contrast Checker

Check WCAG contrast ratio between two colors.

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Keyboard Navigation Test

Test accessibility using keyboard-only input.

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Mastery Series

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34 lessons

Git Mastery

Master Git fundamentals, collaboration flows, and practical troubleshooting paths.

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17 lessons

Complete React Tutorial

Learn React from first principles through hooks, components, state, and routing lessons.

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Developer Tools

AI code review in 2026 - a workflow that survives the PR flood

AI is generating more pull requests than humans can review. The fix isn't picking the best AI code review tool — it's combining the right ones.

Apr 27, 2026
04

AI agents

Gemini CLI Subagents vs Claude Code: How They Actually Work

Gemini CLI shipped subagents in April 2026. Here is an architectural comparison with Claude Code covering orchestration, context capacity, and permission controls.

Apr 27, 2026
05

Tailwind CSS

Tailwind CSS v4 Migration - The Breaking Changes Nobody Warned You About

A practical walkthrough of what actually breaks when you upgrade to Tailwind CSS v4, from the silent border-color default to the renamed shadow scale.

Apr 25, 2026
Accessibility

Image Accessibility Checker

Verify if images have proper alt text.

Analyzer

Free Online Text Comparison Tool

Online Text Diff Checker – Compare Text, JSON, CSS Side-by-Side

Analyzer

Readability Checker

Measure the readability of your text.

Code Converter

CSV to XML

Convert CSV rows into XML format.