Guides
Practical developer formatting guides
Short, original reference guides written for developers who clean payloads, configuration files and SQL snippets during daily debugging work.
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Use the tools with better judgment
API Debugging GuideHow to debug status codes, auth, payloads, schemas, logs and retries.
HTTP Status Codes ReferenceSearch response codes and connect them to practical API debugging checks.
HTTP Headers ReferenceUse headers to debug auth, CORS, cache and browser security behavior.
JSON Formatting GuideHow to read, validate and safely share JSON payloads.
JSON Schema GuideHow to review generated schemas, required fields and array item rules.
YAML Formatting GuideWhy indentation matters and how to avoid config mistakes.
SQL Formatting GuideHow readable SQL helps reviews, debugging and performance conversations.
Safe Online Developer ToolsWhat not to paste into any web tool and how Formalint handles input.