Developer Tools Blog
Learn about developer tools, best practices, and how to use our free online tools effectively.
YAML vs JSON - Which Format Should You Choose?
A comprehensive comparison of YAML and JSON formats, their strengths, weaknesses, and when to use each for configuration files and data serialization.
All Articles
YAML vs JSON - Which Format Should You Choose?
A comprehensive comparison of YAML and JSON formats, their strengths, weaknesses, and when to use each for configuration files and data serialization.
Understanding JSON Formatting and Validation
A comprehensive guide to JSON format, why it matters, and how to format and validate JSON effectively for better code readability and debugging.
Understanding Base64 Encoding - Complete Guide
Learn everything about Base64 encoding, how it works, when to use it, and best practices for encoding and decoding binary data in text formats.
JSONPath Expressions - Query JSON Like a Pro
Master JSONPath expressions to query and extract data from JSON documents efficiently. Learn syntax, operators, and practical examples.
Understanding URL Encoding - Complete Guide to Percent Encoding
Learn everything about URL encoding (percent-encoding), how it works, when to use it, and best practices for encoding URLs and URI components safely.
Understanding UUID Generation - Complete Guide to Unique Identifiers
Learn everything about UUIDs (Universally Unique Identifiers), how they work, different versions, and best practices for generating unique IDs in your applications.
JWT Tokens Explained - Complete Guide to JSON Web Tokens
Learn everything about JWT tokens, how they work, when to use them, and best practices for secure implementation in your applications.
Mastering Regular Expressions - Complete Guide to Regex Patterns
Learn everything about regular expressions, how they work, common patterns, and best practices for pattern matching, validation, and text processing.
Common Regex Performance Traps (and How to Avoid Them)
Avoid catastrophic backtracking and other performance killers with simple pattern tweaks.
Regex Lookaheads and Lookbehinds Explained
Learn positive and negative lookarounds with real-world examples and pitfalls.
Pretty Print JSON in Terminal (jq, Node, Python)
Quickly format JSON from the command line using jq, Node.js, and Python.
How to Decode JWT Safely (Header, Payload, Signature)
Learn how to safely decode JWTs, what each part means, and where security risks arise.
JWT Claims Cheat Sheet: Complete Reference Guide (exp, nbf, aud, iss)
Quick reference guide to JWT claims with validation rules, code examples, and common pitfalls. Use our free JWT decoder to inspect claims instantly.
JWT in Authorization vs Authentication — Decoding Implications
Understand where JWTs fit in auth flows and what decoding does (and doesn’t) tell you.
JWKS Key Rotation & 'kid' Errors: Complete Guide + Online Decoder Tool
Stop JWKS validation headaches. Learn how key rotation and the 'kid' claim work, and use our FREE, expert online tool to decode, verify, and troubleshoot your JWKS tokens fast.
JSON Validate vs Parse — What’s the Difference?
Learn how validation differs from parsing and when to use each.
Fix “Invalid JWT” Errors — Common Causes and Checks
Troubleshoot invalid JWT errors with a systematic checklist for decoding and validation.
HS256 vs RS256 — What Changes When Decoding?
Understand differences between symmetric and asymmetric JWT algorithms and what you can infer at decode time.
Fix “Unexpected token” JSON Errors
A quick troubleshooting guide for common JSON parsing errors.
An Email Regex That Actually Works (and When Not To)
Practical email regex patterns, their limitations, and when to use dedicated validation.
When Not to Trust a Decoded JWT
Decoding is not validation. Learn when decoded claims are untrustworthy without signature checks.
Decode JWT in Postman, curl & Node.js: Step-by-Step Guide + Free Tool
Learn how to decode JWTs in Postman, curl, and Node.js with practical examples. Use our free online JWT decoder for instant verification and troubleshooting.
Decode JWT Online — Security Myths vs Facts
Separate myths from facts when using online JWT decoders and learn safe practices.
Decode JWT Offline in Browser (Privacy-First)
Decode JWTs locally in your browser without sending data to a server.
Decode JWT from HTTP-only Cookies — What You Can and Can’t See
Learn the limits of decoding tokens stored in HTTP-only cookies and how to debug safely.
Base64URL vs. Base64: JWT Decoding Differences Explained + Quick Fixes
Is your Base64 token failing? Understand the critical differences between Base64 and Base64URL in JWT decoding. Use our tool to troubleshoot encoding/decoding errors now.