Case & Naming Converter
Switch between UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE and dot.case in one click, for identifiers and text cleanup.
More tools
Word & Character Counter
Count characters, CJK characters, words, lines, paragraphs, sentences and bytes in real time, and estimate the reading time.
Line Tools (Dedupe / Sort)
Process text line by line: remove duplicates, sort ascending / descending / numerically, reverse, shuffle, drop blank lines, trim, number lines, add prefixes and suffixes.
Markdown Preview & HTML Converter
Live Markdown preview with GFM tables, task lists and code blocks, plus one-click copy or download of the generated HTML. The preview is sanitized.
JSON Formatter
Format, minify, validate and escape JSON. Big numbers keep their precision, nested JSON strings can be expanded, and errors point to the exact line and column.