Text Tools
Count / Diff / Dedupe / Case · 10 tools
Word & Character Counter
Count characters, Chinese/English, lines, paragraphs, UTF-8 bytes and estimated reading time
Text Diff Checker
Find added and removed lines between two versions, side by side
Line Dedupe & Sort
Remove blank lines and duplicate lines, optionally sort alphabetically
Case Converter
Convert between UPPERCASE, lowercase, capitalize first, title case and sentence case
Naming Style ConverterNEW
Convert among camel / Pascal / snake / kebab / CONSTANT styles in one click
Line Processing
Batch add prefix/suffix and line numbers; remove or keep lines containing keywords
Find & Replace
Support plain text and regex, optional case-insensitive, replace everywhere
Regex TesterHOT
Highlight matches in real time, show capture groups, with g/i/m toggles
HTML Entity Encoder / Decoder
Convert between special characters and & < and other HTML entities
Whitespace Cleaner
Trim ends, collapse spaces, remove all whitespace, remove tabs, convert CRLF/LF