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Developer guides

How-to guides for developers

Practical, battle-tested walkthroughs. Every guide links to the tools we'd use ourselves — because we built them.

Editors

4 min read

How to format JSON in VS Code

Four ways to pretty-print JSON in VS Code — built-in command, Prettier, keyboard shortcut, and CLI. Plus fixes for 'format document' not working.

Build tools

6 min read

How to minify JavaScript in Webpack

Enable TerserPlugin, configure production mode, and reduce bundle size with tree-shaking and code splitting. Complete Webpack 5 minification walkthrough.

XML

5 min read

How to validate XML against an XSD schema

Three ways to validate XML against an XSD: online tool, command line (xmllint), and programmatically in Python, Java, and Node.js. With error interpretation.

Data

4 min read

How to open a JSON file in Excel

Convert JSON to CSV and open in Excel using Power Query, online converter, or PowerShell. Step-by-step instructions for Windows and Mac.

Python

4 min read

How to pretty-print JSON in Python

Format JSON in Python with json.dumps, pprint, rich, and CLI (python -m json.tool). Handles Unicode, sorting keys, custom indentation, and big files.

SEO

6 min read

How to write SEO meta tags (and which to skip)

Title, description, Open Graph, Twitter Card, canonical, robots — every meta tag that still matters in 2026, with examples and the ones to stop using.

Jump to a converter

JSON ↔ YAML, XML, CSV — all browser-based.

Compare formats

JSON vs YAML, JSON vs XML, YAML vs XML, and more.