How to Convert JSON to C# Classes — Complete 2026 Guide
Learn how to convert JSON to strongly-typed C# classes, records, and POCOs. Covers nested objects, arrays, naming conventions, and real-world API examples.
SHA256 vs MD5: Which Hash Algorithm Should You Use?
Compare SHA256 and MD5 in terms of security, performance, and use cases. Learn when each algorithm is appropriate and why MD5 is considered broken.
Understanding JWT Tokens: A Complete Developer Guide
Learn what JWT tokens are, how the header-payload-signature structure works, and how to decode and debug tokens for OAuth2 and API authentication.
Base64 Encoding Explained: When and How to Use It
Understand Base64 encoding — how it works, when to use it for APIs, data URIs, email attachments, and JWT tokens. Includes encoding/decoding examples.
10 Regex Patterns Every Developer Should Know
Master the 10 most useful regular expression patterns for email validation, URL matching, IP parsing, and more. Complete with explanations and test examples.
SQL to C# Classes: EF Core, POCO & Record Guide
Convert CREATE TABLE statements to EF Core entities, POCOs, and records with proper type mapping and data annotations.
Code Formatting Best Practices: JSON, XML, SQL, CSS & More
Format and beautify minified code instantly. Best practices for 6 common formats with minification and reverse transform.
URL Encoding Explained: Percent-Encoding Guide
Understand percent-encoding, reserved characters, and the difference between encodeURI and encodeURIComponent.
HEX vs RGB vs HSL: Complete Color Format Guide
Understand the three main color formats in web development. Learn HSL theming, CSS custom properties, and when to use each.
Unix Timestamp Guide: DateTime Format Conversion
Convert between Unix timestamps, ISO 8601, RFC 2822 and more. Code examples in JavaScript, C#, and Python.
How to Convert JSON to Python Dataclass
Convert JSON to Python dataclasses with type hints. Covers dacite, dataclasses-json, and Pydantic approaches.
Online SQL CREATE TABLE to EF Core Entity Converter
Convert SQL DDL to C# EF Core entities with data annotations, POCO, and record output formats.
JWT Token Decode Without Secret
Learn how to decode and inspect JWT tokens without the signing secret for debugging OAuth2 and API auth.
Free Online JSON Beautifier & Formatter
Beautify and format JSON with proper indentation. Includes validation, minification, and code examples.
Regex Email Validation Pattern — Test & Examples
Three levels of email regex patterns with test cases and implementations in JavaScript, Python, and C#.
Unix Timestamp to Date Converter Online
Convert epoch time to human-readable dates with code in JavaScript, Python, C#, and SQL.
HEX to RGB CSS Color Converter
Convert HEX to RGB and HSL with visual examples, code, and a complete CSS color reference.
SHA256 Hash Generator Online Free
Generate SHA256 hashes instantly. Compare with MD5, learn HMAC, with code in JS, Python, and C#.