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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 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, 20265 min read
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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, 202603

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Gemini CLI Subagents vs Claude Code: How They Actually Work

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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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Git Mastery

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

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Complete React Tutorial

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

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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
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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
05

Developer Tools

Claude Code's Monitor Tool Turns Your Agent Into an Event-Driven System

Claude Code's Monitor tool streams background process output directly into the agent session, replacing polling loops with event-driven reactions that cost nothing during idle periods.

Apr 25, 2026
Accessibility

Image Accessibility Checker

Verify if images have proper alt text.

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Free Online Text Comparison Tool

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

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Readability Checker

Measure the readability of your text.

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CSV to XML

Convert CSV rows into XML format.