JSON Shows Chinese as \uXXXX Escapes After Formatting — How to Get Readable Text Back

Why does formatted JSON turn Chinese into \uXXXX Unicode escapes, and how do you convert it back to readable text? Explains the cause and shows a one-click fix, all processed locally in your browser.

Base64 Decode Shows Garbled Text or Black Question Marks for Chinese — How to Fix

Base64 decode turns Chinese into mojibake or black question marks? Explains the root cause — Base64 encodes bytes, not characters — and gives command-line, code, and online-tool fixes, all processed locally.