base64encodingbinary
Base64 Encoding: The Complete Developer Guide
Deep dive into Base64 encoding mechanics, URL-safe variants, data URIs, padding rules, and language-specific implementations in JavaScript, Python, Go, and Rust.
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Topics
In-depth developer guides on encoding, cryptography, APIs, security, and data formats.
jsonformattingvalidation
JSON Formatting and Validation Guide
Learn how to format, validate, and manipulate JSON data. Covers JSON Schema, parsing edge cases, streaming JSON, and comparison with YAML and TOML.
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uuidgeneratorsdatabase
UUID Generator Guide: All Versions Explained
UUIDs are 128-bit identifiers standardized in RFC 9562. Covers UUID v1 through v8, generation in all major languages, database storage strategies, and ULID as an alternative.
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httpapinetwork
HTTP Tools for Developers: Status Codes, Headers, and Request Building
HTTP is the foundation of the modern web. Covers all HTTP status codes, request headers, authentication schemes, CORS, rate limiting, caching, and debugging tools.
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datetimeunixtimezone
Unix Timestamps and Date/Time Tools: The Complete Guide
A Unix timestamp is seconds elapsed since January 1, 1970 UTC. Covers timestamp conversion, timezone handling, date arithmetic, ISO 8601, and the year 2038 problem.
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textregexdiff
Text Processing Tools for Developers
String manipulation, encoding, formatting, diff comparison, and regex matching. Covers case conversion, word count, markdown rendering, diff, regex testing, and string escaping.
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csscolorsdesign
CSS Color Tools: Conversion, Contrast, and Palette Generation
CSS color formats, WCAG contrast checking, palette generation algorithms, CSS custom properties for design tokens, dark mode color strategies, and color blindness considerations.
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cryptographyhashingsha256
Cryptographic Hashing: A Developer's Guide
Understand SHA-256, SHA-512, bcrypt, and Argon2. Learn when to use each hash function, how to implement file integrity checks, and why MD5 and SHA-1 are broken.
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encodingbase64binary
Encoding and Decoding: The Complete Developer Guide
Master Base64, URL encoding, HTML entities, Unicode, and binary encoding. Practical code examples in JavaScript, Python, and Go for handling encoding at every layer.
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cryptographyaessecurity
Cryptography Fundamentals for Developers
Symmetric and asymmetric encryption, hash functions, digital signatures, HMAC, and key derivation using the WebCrypto API. Learn which primitives to use and when.
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apitestingrest
REST API Testing Techniques
Validate HTTP endpoints with manual curl testing, automated Jest and Supertest suites, OpenAPI contract testing, and a checklist of common API bugs to catch.
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jsonyamlformats
JSON, YAML, XML, and TOML: Data Format Guide
Compare JSON, YAML, XML, and TOML with syntax examples, tradeoffs, parsing code in JavaScript, and practical guidance on choosing the right format.
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regexpatternsjavascript
Mastering Regular Expressions
Learn regex from character classes and quantifiers to named groups, lookaheads, and language-specific APIs in JavaScript, Python, and Go.
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jwtauthenticationoauth
JWT and Modern Web Authentication
JWT structure, signing algorithms (RS256, ES256, HS256), refresh token rotation, algorithm confusion attacks, and integration with OAuth 2.0 and OpenID Connect.
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securityxsscsrf
Web Security Basics for Developers
Practical defenses for XSS, SQL injection, CSRF, and insecure cookies. Includes Content Security Policy setup, secure cookie attributes, and security header configurations.
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toolingdxeslint
Essential Developer Tooling and Workflows
Configure Prettier, ESLint, Husky, TypeScript strict mode, and GitHub Actions CI to automate code quality and ship with confidence.
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