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Aa
Case Converter
Convert text between camelCase, snake_case, UPPER, and more
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😊
Emoji Search
Search emoji by keyword or describe it in natural language with AI, click to copy, browse by category
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📖
EPUB/TXT Converter
Turn EPUB books into plain text, or pack a TXT novel into an EPUB with auto chapter detection — all in your browser
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📁
Folder Structure Generator
Parse indented or ASCII tree text into a directory tree and output Markdown/Tree/JSON/YAML.
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✍️
HTML Rich Editor
WYSIWYG editor with live preview, export to HTML and Markdown
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{}
JSON Formatter
Format, compress, and validate JSON
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↵
Line Ending Converter
Convert between CRLF, LF, and CR line endings with auto-detection
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↕️
Line Sorter
Sort text lines alphabetically, by length, or randomly
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📝
Lorem Ipsum
Generate placeholder text in English or Chinese
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≡
Markdown Table
Visually build Markdown tables with WYSIWYG editing
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📚
Markdown Tutorial
Interactive guided lessons to learn Markdown step by step
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✅
Markdown Validator
Check Markdown document for format issues: heading levels, links, etc.
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✍️
AI Writer
Multilingual AI writing assistant: polish and improve existing text, or generate high-quality text from a brief, with customizable target language and tone
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.*
Regex Tester
Test regular expressions with real-time match highlighting, plus AI generation from plain language
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📝
Simple Notes
Minimal online notepad with plain text and Markdown dual-mode editing, live preview, line numbers, auto-save to IndexedDB, fullscreen focus mode, font size control, and .txt/.md export
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📖
Simple Reader
Immersive reading experience for plain text, Markdown, and EPUB. Custom fonts, themes, TTS, and text highlighting.
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🎙️
Teleprompter
Online teleprompter with auto-scroll, speed/font/mirror/fullscreen controls
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🔑
Text Cipher
ROT13, Caesar cipher, and AES encryption/decryption tools
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🧹
Text Cleaner
Strip HTML tags, extra spaces, special characters and more
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🗃️
Text Dedup
Remove duplicate lines from text, with optional sorting
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🔍
Text Diff
Diff text/code with split view, char-level highlights, ignore whitespace/case
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🔄
Text Replace
Powerful find & replace with regex, batch rules, presets, case-insensitive and whole-word matching
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📋
Text Snippets
Lightweight text snippet manager — save, categorize, search, and reuse text fragments instantly. Features multi-tag organization, real-time search, one-click copy, Markdown preview, batch operations, IndexedDB persistence, and JSON import/export for cross-device sync
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🔤
Unicode Escape
Convert between \\uXXXX escape sequences and original characters
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🃏
Flashcards
Generate a deck from a plain-language prompt with AI (pick word/meaning languages and content). Paste an English article to auto-extract its words into a deck, plus custom bulk-import with custom fields. Flip 3D cards, study in sequential/random/unmastered modes, track mastery, TTS read-aloud, JSON/CSV import-export. Data stays local.
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📊
Word Counter
Analyze text with multi-dimensional stats: words, chars, paragraphs, reading time
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