CSV Data Cleanup: Encoding, Delimiters, Validation & More
Fix CSV problems: encoding corruption, delimiters, quoting, Excel gotchas, duplicates, and large-file strategies with regex and SQL examples.
· 14 min read Read →
Developer Articles & Guides
In-depth tutorials, best practices, and technical guides to help you work more effectively with web development tools and techniques.
Markdown vs AsciiDoc vs reStructuredText - Which to Use?
Compare Markdown, AsciiDoc, reStructuredText, LaTeX, HTML, Textile, and Org-mode. Feature table, syntax examples, Pandoc conversion, and honest recommendations.
· 12 min read Read →
URL Encoding Explained: Percent Encoding for Web Developers
Learn about URL encoding, percent encoding, and when to use encodeURI vs encodeURIComponent. Guide with examples for handling special characters.
· 16 min read Read →
Remove EXIF Data & Metadata - Photo Privacy Guide 2026
What metadata is hidden in your photos? GPS location, device info, timestamps. Learn to check and remove EXIF data before sharing. Includes free tools.
· 14 min read Read →
How to Block AI Crawlers - Complete Guide 2026
Which AI bots are crawling your site, how to block them with robots.txt, meta tags, and server config, what actually works, and the legal landscape explained.
· 13 min read Read →
Bank Statement Formats: OFX, MT940, QIF, CAMT.053, BAI2 Guide
OFX, QFX, MT940, CAMT.053, QIF, BAI2, NACHA — format comparisons, field breakdowns, and conversion for accounting software imports and financial transactions.
· 14 min read Read →
Text Encoding Guide: UTF-8, Unicode, Mojibake & Fixes
ASCII, Unicode, UTF-8/16/32, Latin-1, Shift-JIS, GB2312, BOM, and mojibake. Detect encoding, convert files, fix databases, and set HTTP headers correctly.
· 15 min read Read →
JSON Validation: A Complete Developer's Guide
Learn JSON validation best practices, common errors, and how to validate JSON syntax. Complete guide with examples, debugging tips, and recommended tools.
· 17 min read Read →
Password Security: Strong Passwords and Modern Auth
How passwords get cracked, what makes them strong, password managers, bcrypt/argon2, 2FA options, passkeys, and breach checking with code examples.
· 12 min read Read →
Color Theory for Web Design: RGB, HSL, Contrast
Color models (RGB, HSL, CMYK, HEX), color wheel harmony, WCAG contrast, CSS functions, dark mode, color blindness, palette building, and custom properties.
· 16 min read Read →
Hash Functions Explained: MD5, SHA-256, bcrypt for Developers
How hashing works, why MD5 is broken, SHA-256/SHA-512 compared, HMAC explained, bcrypt for passwords, and real JavaScript and Python code examples.
· 13 min read Read →
Luhn Algorithm Explained: Credit Card Validation Step by Step
Luhn algorithm: step-by-step walkthrough, JavaScript/Python code, credit card structure (IIN/BIN), check digit generation, IMEI/NPI uses, and limitations.
· 12 min read Read →
CSS Minification Guide: Techniques, Build Tools, and Real Impact
CSS minification explained with before/after examples, Vite/Webpack/PostCSS configs, critical CSS extraction, PurgeCSS setup, and how to measure real impact.
· 14 min read Read →
PDF Guide: Merge, Split, Compress & Convert PDFs Online
Complete guide to PDF files. Learn to merge, split, compress, convert, and extract pages from PDFs. Browser-based tools for privacy.
· 17 min read Read →
GIF vs APNG vs WebP vs AVIF: Animated Image Formats Compared
GIF limitations, APNG advantages, animated WebP and AVIF compared. Browser support table, conversion workflows, optimization tips, and when to use each format.
· 13 min read Read →
Markdown Cheat Sheet: Complete Syntax Reference for 2026
Markdown syntax: headings, emphasis, lists, links, images, code blocks, tables, task lists, GFM extensions, and rendering differences across platforms.
· 10 min read Read →
QR Codes Explained: Complete Guide for Developers and Marketers
Learn how QR codes work, their structure, encoding types, and best practices. Create scannable codes for URLs, WiFi, vCards, and more with practical examples.
· 12 min read Read →
Web Image Optimization: Formats, Compression & Tips
Learn how to optimize images for the web. Compare JPEG, PNG, WebP, AVIF formats. Reduce file sizes by 70% without losing quality. Complete guide with examples.
· 16 min read Read →
Regular Expressions for Beginners: Complete Regex Tutorial
Learn regular expressions from scratch. Master pattern matching with practical examples for email validation, phone numbers, URLs, and text processing.
· 15 min read Read →
Unix Timestamp Guide: Epoch Time, Y2K38, and Date Handling
Unix timestamps explained: Y2K38 problem, conversions in JavaScript/Python/SQL/bash, timezone pitfalls, ISO 8601, seconds vs milliseconds, and database storage.
· 14 min read Read →
Web Video Formats Guide: MP4, WebM, AVI, MKV, Codecs Explained
MP4, WebM, AVI, MKV, MOV compared. Codecs (H.264, H.265, VP9, AV1) explained. Browser support, FFmpeg WASM editing, conversion, and format selection guide.
· 17 min read Read →
Document Format Conversion Guide: DOCX, PDF, ODT, EPUB
How DOCX, PDF, ODT, RTF, and EPUB actually work. Conversion gotchas, formatting loss, Pandoc workflows, LibreOffice headless, WASM converters, batch scripts.
· 16 min read Read →
Text Manipulation for Developers: Essential Techniques and Tools
Regex patterns, case conversion, encoding, text diffing, slug generation, Unicode normalization, and CSV parsing. Examples in JavaScript, Python, and CLI.
· 16 min read Read →
Base64 Encoding Explained: How It Works and When to Use It
How Base64 works, the encoding table, image embedding, URL-safe variants, size math, and JS/Python/Node examples. A practical guide with no fluff.
· 12 min read Read →
Audio File Formats Guide - MP3, WAV, FLAC, AAC Explained
Understand audio formats: MP3, WAV, FLAC, AAC, OGG. Learn lossy vs lossless, bitrates, metadata, and when to use each format. Practical guide for developers.
· 18 min read Read →
JSON vs XML vs YAML vs CSV vs TOML: Data Formats Compared
Side-by-side comparison of JSON, XML, YAML, CSV, and TOML with real examples, parsing libraries, schema validation, streaming, and when to pick each format.
· 17 min read Read →
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