How to Format JSON Online
Use a browser JSON formatter to indent or minify documents without uploading the payload.
Aug 16, 2026
Guides
Short, original notes on JSON, JWT, cron, SQL, Base64, and deploying a site on a VPS. Written for DNVERSE, not scraped from elsewhere.
How to Validate JSON
Syntax validation catches broken JSON before an API client does. Schema checks are a separate step.
Aug 16, 2026
What Is JWT Authentication?
JSON Web Tokens carry claims between systems. Decoding is not the same as trusting a signature.
Aug 16, 2026
How to Decode JWT Tokens
Decode header and payload locally, confirm expiry claims, and never upload production tokens.
Aug 16, 2026
Cron Expression Examples
Five-field cron examples for hourly, daily, and weekday jobs, plus a generator that explains the fields.
Aug 16, 2026
Unix Timestamp Explained
Unix time counts seconds from 1970-01-01 UTC. Learn when a value is in milliseconds and how to convert it.
Aug 16, 2026
How to Format SQL
Indent SQL clauses so reviews are readable. Formatting is not execution and should stay local.
Aug 16, 2026
Base64 Encoding Explained
Base64 turns bytes into ASCII. It is encoding, not encryption, and JWT uses a URL-safe variant.
Aug 16, 2026
JSON vs XML
JSON is lighter for APIs. XML still appears in feeds and enterprise documents. Choose based on the contract you must meet.
Aug 16, 2026
How to Deploy a Website on a VPS
A first VPS deploy: TLS, a reverse proxy, app process, backups, and a health check. No fake scale story.
Aug 16, 2026