Category: HTML

Use a local HTTP server when modules, fetch requests, PHP, or browser origin rules make a page fail under a file URL.

Declare accurate MIME types, test codec support with canPlayType(), and handle both media and source loading errors.

Put reusable styles in a CSS file and link it from every HTML page using a path that matches the site deployment.

Recognize common double-encoded UTF-8 patterns, reverse a known Windows-1252 mis-decoding in PHP, and avoid corrupting already-correct rows.

Understand why visually identical Unicode strings can compare differently and when to normalize text to NFC or NFD in JavaScript and databases.

Find and repair malformed UTF-8 before JSON encoding in PHP, preserve error visibility, and avoid silently discarding corrupted input.

Diagnose and repair garbled text after a MySQL migration by separating stored bytes, column metadata, connection character sets, and application output.

Convert Windows-1252 text and files to UTF-8 without losing smart quotes, dashes, euro signs, or other characters commonly mistaken for ISO-8859-1.

A practical reference for reserved HTML characters, spacing, typography, currency, and arrows.

Convert legacy CSV files to UTF-8 while preserving quoted fields and delimiters.