Text Processing
Writing, editing, or cleaning up text? Test regular expressions with live match highlighting, diff two blocks side by side, count words and characters, switch between letter cases, preview Markdown, strip duplicate lines, or convert Chinese characters to Pinyin.
Text Processing
Regex Testing Tool
Includes a library of common patterns and helps you debug and validate regular expressions.
Text Comparison Tool
Free online text comparison tool highlighting differences between two texts. Line-by-line comparison, quickly find added, deleted, modified content.
Word Count Tool
Free online word counter with real-time statistics for characters, words, reading time and more. Essential writing assistant tool.
Case Converter
Free online case converter supporting camelCase, snake_case, kebab-case, CONSTANT and more. Convert variable names instantly.
Chinese Converter
Free online Chinese converter for Simplified and Traditional Chinese. Convert text with Mainland China, Taiwan, and Hong Kong vocabulary rules.
String Reversal Tool
Reverse any text instantly — useful for puzzles, formatting, and quick checks.
Markdown Editor
Free online Markdown editor with real-time preview, syntax highlighting & HTML export. Supports tables, code blocks, diagrams, write more efficiently.
Teleprompter
Free online teleprompter with smooth auto-scroll, fullscreen, mirrored text and adjustable pace for video recording and speeches.
Text Deduplication Tool
Free online text deduplication tool supporting line, word, sentence, and paragraph modes. Remove duplicate content with case sensitivity and order options.
Character Frequency Analyzer
Free online character frequency analysis tool. Count occurrences and frequency of each character in your text with case sensitivity and space options.
Pinyin Conversion Tool
Free online Chinese to Pinyin converter with tone marks, tone numbers, no-tone mode, custom separators, and capitalization options.
Remove Newlines Tool
Free online tool to remove line breaks from text. Remove all newlines, convert to spaces, remove empty lines or merge them. Runs locally.
What this category can do
Text tools edit and analyze plain text, lists and lightweight markup. They cover regular expressions, diffs, word counts, case conversion, Chinese conversion, Markdown, teleprompter text, deduplication, character frequency, pinyin and newline cleanup. Use this category when the content is text itself, not code syntax, image pixels or office document layout.
Most tools process input in the browser when possible. For files, tokens, documents or network checks, review the selected tool before using sensitive data.
Common use cases
- Compare two pasted versions of a paragraph before sending a revision.
- Clean a list by removing duplicates, changing case or stripping extra line breaks.
- Draft Markdown, test a regex pattern, count words or add pinyin for reading support.
FAQ
Will whitespace be preserved?
Some tools preserve whitespace; cleanup tools intentionally change it. Check the operation before replacing your original text.
Why does my regex work elsewhere but not here?
Regex engines differ in flags, Unicode support and escaping. Confirm the target runtime before using the pattern in production.
Can I paste very long text?
Usually yes, but browser memory and rendering speed become the limit for very large inputs.
Is Markdown output identical on every site?
Basic Markdown is portable, but tables, task lists and embedded HTML can render differently across platforms.
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