String Length & Utilities
Count string length, reverse text, remove duplicates, and more string operations.
About String Length & Utilities
A collection of quick string manipulation utilities: count character length, byte length (UTF-8), and word count; reverse the entire string; remove leading/trailing whitespace; normalize multiple spaces to one; remove line breaks; remove duplicate lines; sort lines alphabetically; shuffle lines randomly; and extract unique lines. Each operation works instantly in the browser on any text you paste.
All processing happens entirely in your browser using modern web APIs. Nothing is uploaded to our servers — your data stays local and private. Free to use forever.
Common use cases
- Removing duplicate lines from a list of items or emails
- Sorting a list of words, names, or IDs alphabetically
- Checking the byte size of a string for database field length planning
- Stripping extra whitespace from copy-pasted text
- Shuffling a list randomly for draw or randomization purposes
How it works
Each operation is a pure string or array transformation: reverse uses Array.from(str).reverse().join("") for correct Unicode handling. Remove duplicates splits by newline, filters using a Set, and rejoins. Sort uses Array.sort(). Shuffle uses the Fisher-Yates algorithm for uniform random ordering. Byte length uses new TextEncoder().encode(str).length for accurate UTF-8 byte count.