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Developer tutorials, guides, and insights to help you work more efficiently.
Showing 21 articles
ml to oz: US & UK fluid ounce formulas, charts (2026)
Convert ml to fl oz with exact NIST factors. US (29.5735), UK (28.4131), FDA label 30 mL rounding. Try the free volume converter in your browser.
kg to lbs: NIST formula, mental math and quick charts (2026)
Convert kilograms to pounds with the NIST-exact factor (1 kg = 2.20462 lb). Mental-math tricks, body-weight, luggage and medical-dose charts. Free.
Temperature Conversion Formulas: Celsius, Fahrenheit, Kelvin
Exact temperature conversion formulas for Celsius, Fahrenheit, Kelvin and Rankine with code in 5 languages, weather API patterns, common pitfalls and reference tables.
Bitwise Operations Explained: AND, OR, XOR, Shifts, and Masks
Master bitwise operations with hands-on examples: AND, OR, XOR, shifts, two's complement, bitmasks, and feature flags, with code in JS, Python, Go, and C.
jq Cheat Sheet: 30 Real-World JSON Command-Line Patterns
Master jq with 30 battle-tested patterns for filtering, transforming, and extracting JSON on the command line — from kubectl and AWS to log files.
Number Base Conversion Guide: Binary, Hex, Octal & Decimal
A developer's guide to binary, hex, octal & decimal conversion — step-by-step methods, code examples in JS/Python/Go/C, and real-world use cases. Free online converter included.
URL Encoding & Decoding: A Developer's Guide to Percent Encoding
RFC 3986 rules, encodeURI vs encodeURIComponent, UTF-8 byte mapping, and code examples in JS, Python, Go & Java. Try our free online tool.
Unit Conversion Guide: Length, Weight, Temperature & Volume
Metric-to-imperial conversion with exact formulas, code examples & quick-reference tables for length, weight, temperature and volume.
CSV to JSON Conversion: Methods, Pitfalls & Code Examples
Convert CSV to JSON (and back) with Python, JavaScript & CLI tools. Covers encoding traps, type coercion and streaming large files.
Password Entropy: Calculate & Strengthen Your Passwords
Master password entropy: the formula, brute-force math, and why length beats complexity. Includes JS/Python code and a free generator.
MD5 vs SHA-256: Hash Algorithm Comparison for Developers
Compare MD5, SHA-1, SHA-256 and SHA-512 on security, speed and output size. Learn which hash to choose for checksums and password storage.
UUID v4 vs v7 vs ULID vs Snowflake: ID Guide (2026)
UUID v4, v7, ULID, Snowflake ID and NanoID compared on database performance, sortability, storage size and ecosystem support with code examples.
What Is a UUID? Guide to Format, Versions & Use Cases
UUIDs from the ground up: 128-bit structure, hex format, how v1/v3/v4/v5/v7 work internally, collision math, real-world use cases and code examples.
What Is Base64 Encoding? A Beginner's Guide
New to Base64? Learn what Base64 encoding is, how it works step by step, and why developers use it — a beginner-friendly introduction with clear examples.
Web Security Essentials: Hashing, Validation & Auth
Web security essentials: bcrypt vs Argon2 hashing, XSS and SQL injection prevention, JWT best practices, CSP headers and MFA — with JS code examples.
Unix Timestamp Guide: Precision, Timezone & DST Tips
Unix timestamps explained: epoch origins, seconds/ms/us conversion, timezone handling, DST pitfalls, and code examples in JS, Python and Go.
Image Compression: Browser vs Node.js Solutions
Compare Squoosh, Sharp, browser-image-compression and more — learn when to compress client-side vs server-side, with benchmarks and code examples.
From JSON5 to JSONC: A More Forgiving JSON Formatting Guide
Learn JSON5 vs JSONC differences, format config files with comments, and integrate formatters into your CI pipeline — with real-world code examples.
What Exactly Lives Inside a PostgreSQL timestamp Column?
A plain-English guide to how PostgreSQL stores timestamp vs timestamptz, why timezones bite, and how to choose the right type for your use case.
Advanced Base64: MIME, Data URLs, Performance & Security
Implement Base64 in JavaScript and Python, optimize data URLs, choose standard vs URL-safe variants, and avoid common security pitfalls.
Essential Developer Tools for Encoding & Hashing (2026)
Compare 9 free browser-based developer tools for Base64, JSON, UUID, hashing, image compression and unit conversion — all 100% client-side.