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JSON Formatter
Format, validate, and minify JSON in one screen.
Developer utilities
Clean, fast tools for everyday development work
Format payloads, inspect tokens, test patterns, and compare text without leaving the page.
Browser-basedNo signupCopy and download
Popular picks
Start with the tools developers reach for most
A focused set of utilities for payload debugging, token inspection, regex testing, and quick ID generation.
Guides
Practical guides for common development tasks
Read short, original guides for JSON payload review, JWT claim checks, and regex testing before you jump into the tool.
How to format JSON safely before sharing logs or payloads
A practical guide to formatting JSON, checking syntax errors, and removing sensitive values before you paste payloads into tickets or chat.
Read guideJWT decoder basics: what header, payload, exp, and sub really mean
Use this guide to understand what a JWT decoder shows you, which claims are commonly checked in development, and why decoding is not the same as verification.
Read guideRegex tester guide: how g, i, m, and s change your matches
A short regex guide that explains what the common flags do, when match groups help, and how to avoid patterns that look correct but still miss your target text.
Read guideMore utilities
Useful tools for common debugging tasks
Keep moving with text conversion, diff checks, and quick encoding utilities in the same workflow.