Free browser-based tool
Format SQL online
Beautify SQL with selectable dialect, indentation, and keyword case. The formatter changes layout, not query logic.
Open the SQL formatter
Electronics Engineering Educator Turned Software Developer
Learn Tech Skills Through Clear, Practical Examples
After around seven years teaching electronics engineering, I moved into IT. I share what I have learned across custom PHP, CodeIgniter, Laravel, Flutter, React, Node.js, MySQL, and PostgreSQL, alongside electronics lessons shaped by my teaching background.
How I approach learning
Start with the idea, then work through an example
My electronics teaching background and software development experience shape how I explain technical topics.
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Build the foundations
Begin with the core concept, whether the subject is electronics, databases, or application development.
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Work through examples
Use clear, practical examples to connect a technical explanation with what happens when you apply it.
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Understand the scope
Know the assumptions and limitations of an explanation or tool before relying on its output.
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Electronics and software
Learn from a perspective shaped by around seven years teaching electronics engineering and a later move into IT.
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Software development
Explore topics informed by experience with PHP, CodeIgniter, Laravel, Flutter, React, Node.js, MySQL, and PostgreSQL.
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Keep learning
Use each explanation as a starting point to test ideas, ask questions, and explore the topic further.
Learn and build
Free developer tools and practical tutorials
Work through real examples, then use a focused browser tool to practice.
Free browser-based tool
Format and validate JSON
Check JSON syntax, format valid data, and get readable parse errors. Your input stays in your browser.
Open the JSON formatter
Step-by-step tutorial
Learn SQL INNER JOIN and LEFT JOIN
Compare join results using a small customers-and-orders dataset, with expected rows and explanations of unmatched records.
Read the SQL joins lesson
JSON debugging guide
Find and fix common JSON syntax errors
See how missing commas, trailing commas, unquoted keys, and mismatched brackets make JSON invalid.
Read the JSON syntax guide