Blog
Short, practical guides that pair with Toolshelf's browser-based tools. No fluff — just enough context to solve the problem and open the right utility.
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How to Convert JSON to CSV
Convert a JSON array of objects into CSV for spreadsheets. See a valid example, how nested fields flatten, and what to fix when the JSON is invalid.
Read articleHow to Decode a JWT
Decode a JSON Web Token into header and payload JSON, read exp and iat claims, and understand why decoding is not signature verification.
Read articleHow to Fix Invalid JSON
Fix invalid JSON caused by trailing commas, single quotes, comments, and unquoted keys. See before-and-after examples and how to validate JSON in your browser.
Read articleUUID v4 vs UUID v7
UUID v4 is random. UUID v7 is time-ordered using a Unix millisecond timestamp plus random bits. See when to use each, how they look, and how to generate them in the browser.
Read articleWhat Is CIDR?
CIDR writes an IP prefix and length, such as 10.0.0.0/24. Learn how slash notation maps to masks, host counts, and why /24 is not the same as a single address.
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