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End-to-end workflow for inspecting, formatting, decoding, and resolving syntax issues across API data payloads.
Check for trailing commas, quotes, and structural mistakes in API response bodies.
Use the error position highlighter to locate syntax breaks instantly.
Pretty-print minified JSON payloads for clean human readability.
Toggle between 2-space and 4-space indentation.
Decode authorization JWT headers and claims to verify user roles and scope.
Check exp and iat timestamps against current system time.
Convert numeric epochs into human-readable UTC and local timezones.
Watch for 10-digit (seconds) vs 13-digit (milliseconds) mismatches.
Scan copy-pasted strings for hidden zero-width spaces or non-breaking spaces.
Inspect suspicious variable names that cause SyntaxErrors.
Identify and fix the most frequent syntax mistakes that cause JavaScript JSON.parse() to throw SyntaxError exceptions.
Understand the crucial distinction: decoding a JSON Web Token reveals its payload, but proves nothing about its authenticity.
Detect hidden zero-width spaces, byte order marks (BOM), and non-breaking spaces that cause mysterious syntax errors.
Quickly identify whether an epoch timestamp is in seconds or milliseconds and fix common date calculation bugs.