JSON9 min read
How to Find and Fix Invalid JSON With Real Error Examples
Fix invalid JSON with real examples: trailing commas, missing quotes, bad escaping, comments, and mismatched brackets.
Developer Guides
Practical references for JSON, encoding, checksums, UUIDs, regex, timestamps, and API debugging.
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High-intent guides for common developer workflows.
Timestamps10 min read
Unix Timestamp to Date and Back: A Developer Cheat Sheet
Convert Unix timestamps to dates and back, handle seconds vs milliseconds, UTC, time zones, and common API mistakes.
Hashing11 min read
How to Verify File Integrity with SHA-256 Checksums
Learn how SHA-256 checksums verify file integrity, how to compare hashes safely, and mistakes to avoid with downloads and releases.
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Timestamps10 min read
Unix Timestamp to Date and Back: A Developer Cheat Sheet
Convert Unix timestamps to dates and back, handle seconds vs milliseconds, UTC, time zones, and common API mistakes.
JSON9 min read
How to Find and Fix Invalid JSON With Real Error Examples
Fix invalid JSON with real examples: trailing commas, missing quotes, bad escaping, comments, and mismatched brackets.
Hashing11 min read
SHA-256 vs SHA-512: Which Hash Should You Use?
Compare SHA-256 and SHA-512 for checksums and integrity, how they differ from MD5 and SHA-1, and when each algorithm fits.
Base6412 min read
Base64URL in JWTs and APIs: Encoding Rules Developers Miss
Learn how Base64URL differs from Base64, why JWTs use it, how padding works, and common API encoding mistakes.
Hashing11 min read
How to Verify File Integrity with SHA-256 Checksums
Learn how SHA-256 checksums verify file integrity, how to compare hashes safely, and mistakes to avoid with downloads and releases.
UUIDs10 min read
Generating UUID v4 for APIs and Database Keys
Learn when to use UUID v4 for APIs, database keys, test data, and distributed systems, plus tradeoffs vs sequential IDs.
Regex10 min read
Regex Flags in JavaScript: g, i, m, s, u, y Explained
Learn what JavaScript regex flags do, when to combine g/i/m/s/u, and common mistakes that break multiline and Unicode matching.
Timestamps9 min read
ISO 8601 Dates in JSON APIs: Formatting Rules That Prevent Bugs
Use ISO 8601 correctly in JSON APIs: UTC vs offsets, fractional seconds, date-only pitfalls, and Unix timestamp interoperability.
Base649 min read
Base64 and Unicode: UTF-8 Encoding Pitfalls Developers Hit
Fix Base64 Unicode bugs: encode UTF-8 bytes, avoid btoa pitfalls, and verify emoji round-trips in APIs.
JSON8 min read
10 Essential JSON Best Practices for API Development
Learn the most important JSON practices that will make your APIs more reliable, secure, and maintainable.
Hashing10 min read
Why MD5 and SHA-1 Are No Longer Secure for Password Hashing
Understanding the security implications of using deprecated hash algorithms and what to use instead.
Regex15 min read
Mastering Regular Expressions: A Developer's Guide
From basic patterns to advanced techniques, learn how to write efficient and maintainable regular expressions.
UUIDs12 min read
UUID vs Auto-increment: Choosing the Right Primary Key
When to use UUIDs versus auto-incrementing integers for database primary keys in different scenarios.
Base648 min read
Base64 Encoding: When and Why to Use It
Understanding Base64 encoding, its use cases, and best practices for web development.
JSON8 min read
Optimizing JSON Performance in Large Applications
Tips and techniques for handling large JSON datasets efficiently in web applications.
Timestamps9 min read
Timestamp Management in Distributed Systems
Best practices for handling timestamps across different timezones and distributed systems.
JSON6 min read
Building Privacy-First Developer Tools
How we built ByteToolbox with privacy as a core principle and why it matters for developers.
JSON12 min read
Modern JavaScript: ES6+ Features Every Developer Should Know
Essential modern JavaScript features that will make you a more productive and efficient developer.