Count characters in your text, with and without spaces.
Counting is Unicode-aware, so accented and non-Latin characters count as one character each — and "without spaces" strips all whitespace, not just plain spaces (tabs and line breaks too).
Plain alphabetical sorting puts "Item 10" before "Item 2" — because it's comparing characters, not numbers. Here's what "natural sort" actually fixes.
Deduplicating a list of emails, keywords, or log entries doesn't need a spreadsheet — but it does need to know exactly what counts as a "duplicate."
The four common case styles aren't interchangeable — here's what each one is actually for, and the fastest way to fix text that was typed in the wrong one.