Text and Unicode guides
Clear explanations of hard-to-see text problems, with practical workflows and browser-based tools for verification.
6 min read
Unicode NFC vs NFD: what is the difference?
See why two strings can look identical while containing different code points.
7 min readHow to clean Vietnamese text safely
Normalize, trim, deduplicate, and review Vietnamese text in the right order.
6 min readHow to create SEO-friendly Vietnamese slugs
Turn Vietnamese titles into short, readable, stable URLs.
5 min readRemove extra spaces from Excel text safely
Prepare spreadsheet lists for comparison, deduplication, or import.
6 min readHow to count Vietnamese words accurately
Learn what a word counter measures in space-separated Vietnamese text.
5 min readHow to remove duplicate lines safely
Clean email, keyword, code, and name lists while preserving the original order.
7 min readUnicode homoglyphs: same appearance, different characters
Identify look-alike characters in domains, usernames, codes, and copied text.
7 min readInvisible Unicode characters and zero-width spaces
Find why identical-looking strings may fail to match or deduplicate.