This online text formatter is a comprehensive, client-side text processing tool that requires no installation. Here is a detailed guide:
Basic Operation: Paste or type your text into the input box, select the desired formatting options, and click the "Format Text" button to see the processed result. All operations run entirely in your browser — your data is never uploaded to any server.
CJK/English Auto-Spacing: When enabled, the tool automatically inserts a space between CJK characters and Latin letters or numbers. For example, "今天是Monday" becomes "今天是 Monday", and "HelloWorld" becomes "Hello World". This follows modern typesetting standards and improves readability.
Remove Extra Blank Lines: This merges consecutive blank lines into a single blank line, cleaning up formatting issues that often appear when copying from web pages or PDFs.
Full-Width / Half-Width Conversion: Full-width characters occupy two standard widths and are used primarily in CJK typography. Half-width characters occupy one standard width and are used in English and programming. The tool supports one-click conversion in either direction.
Advanced Paragraph Options: Set paragraph indentation (0-8 spaces), text alignment (left / center / right / justify), add line numbers, sort alphabetically, or reverse line order.
Blog & Article Preparation: Before publishing blog posts or articles, use this tool to format your text. Auto-spacing makes your content look more professional, blank-line removal clarifies structure, and indentation matches CJK reading conventions.
Code Snippet Cleanup: When copying code from web pages, extra blank lines or inconsistent indentation often appear. Use this tool to quickly clean up these formatting issues. Combine "Trim Line Whitespace" for clean, consistent code blocks.
Data Cleaning: When processing text exported from Excel or other applications, extra spaces, blank lines, and inconsistent formatting are common. This tool quickly cleans data, preparing it for further analysis and processing.
Typesetting Standards: According to modern CJK typesetting guidelines, Latin letters and numbers in CJK text should use half-width characters with appropriate spacing between CJK and non-CJK characters. This improves visual consistency and readability.
Full-Width vs Half-Width: Full-width characters originated from early CJK typewriters and dot-matrix printers, with each character occupying two bytes. In Unicode, full-width characters are mainly in the range U+FF01 to U+FF5E. Half-width characters are standard ASCII, each occupying one byte. Full-width punctuation is used in CJK typography; half-width is used in programming.
Regular Expression Processing: The tool uses JavaScript regular expressions for text processing. For example, CJK auto-spacing uses the pattern ([\u4e00-\u9fa5])([A-Za-z0-9]) to detect transitions between CJK and Latin characters and inserts a space. Understanding regular expressions helps you grasp how the tool works and enables you to write more advanced text processing scripts.
No. This tool runs entirely in your browser. All text processing happens locally on your device and is never uploaded to any server. You can safely process sensitive text.
Plain text, Markdown, code snippets, and more. It handles CJK characters, Latin letters, numbers, punctuation, and special characters. For Markdown, the formatting preserves existing markup syntax.
Auto-spacing inserts a space between CJK characters and Latin letters or numbers. For example, "今天是Monday" becomes "今天是 Monday". This follows modern typesetting standards and makes text more readable and professional.
Full-width characters occupy two standard widths, primarily used in CJK typography. Half-width characters occupy one standard width, used in English and programming. The tool supports one-click conversion between them.
Yes. You can select multiple formatting options simultaneously. The tool applies them in a fixed processing order: remove characters → case conversion → full/half-width conversion → CJK spacing → remove blank lines → trim whitespace → sort/reverse → indentation → alignment → line numbers.
Yes. Click the "Download Text" button to save the formatted text as a .txt file to your device. You can also copy the result to your clipboard and paste it into any other editor.
Yes. You can paste multi-line text into the input box and process it all at once. For extremely large texts, consider processing in batches to maintain browser performance.
No. When line numbers are added, they appear at the beginning of each line, and paragraph indentation is applied after the line number. This keeps line numbers aligned while allowing paragraph indentation.