The Json Blog

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How to Format YAML (Indentation, Rules, and Common Errors)

YAML breaks on a single wrong space. Here are the indentation rules that matter, the errors that bite…

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How to Convert JSON to XML (Online, Python, and JavaScript)

Converting JSON to XML is simple until arrays and attributes get involved. Here is how the mapping works,…

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How to Open a JSON File (Windows, Mac, and Online)

A JSON file is just text, so almost anything opens it. Here are the fastest ways to open…

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How to Convert JSON to CSV (and Open It in Excel)

Converting JSON to CSV is easy until the JSON is nested. Here is how to flatten it, the…

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Unexpected token < in JSON at position 0: What It Means and How to Fix It

The Unexpected token < in JSON error almost always means your code got HTML, not JSON. Here is…

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Top 10 Free JSON Tools Every Developer Should Know (2026 Edition)

A working developer's shortlist of free, browser-based JSON tools for formatting, validating, converting, comparing, and minifying JSON, and…

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What Is JSON? A Complete Guide for Developers

JSON is the format almost every API speaks. Here is what it is, its syntax and data types,…

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