Office

Accurately convert between Simplified Chinese, Standard Traditional, Taiwanese Traditional, and Hong Kong Traditional Chinese. Supports custom dictionaries.

Convert Chinese characters (Hanzi) to Pinyin with tone marks or numbers. Features smart polyphone recognition and a dedicated name mode.

Online text case converter supporting multiple modes including uppercase, lowercase, and title case.

Free online mouse tester to check your left, right, and middle buttons, plus scroll wheel. Quickly detect hardware issues and broken clicks.

Look up exact millimeter dimensions for D0 to D6 series paper based on the GB/T 19999-2003 national standard, suitable for book, magazine, and office paper design.

Check US standard paper sizes, including everyday, ANSI, and ARCH series. Features millimeter and inch conversions with visual proportion charts.

Quickly locate and extract mainland China ID numbers from any text. Supports both 15-digit and 18-digit formats and includes a total count.

Look up ISO 216 standard B series paper sizes. Get exact millimeter and inch dimensions for B0 to B10, plus a visual comparison chart.

Generate printable Xingkai pen calligraphy copybooks online. Features 3,500 common Chinese characters to boost your handwriting practice.

Easily generate custom Hengshui style English handwriting practice sheets online. Supports letter tracing and multiple export formats for printing.

Smartly extract structured information like province, city, district, street, name, phone number, and ID from raw text for data entry and cleaning.

Flip text horizontally or vertically online. Supports multilingual and multiline content for creative design or special formatting.

Find Unicode codes and HTML entities by character name or symbol. Get accurate encoding info for web development, design, and document editing.

Generate printable English vocabulary handwriting worksheets with customizable content and formatting.

Check ISO 269 standard C series envelope sizes with an exact millimeter and inch conversion chart and visual comparison guide.

Accurately count words, characters, letters, numbers, and punctuation marks. Perfect for writing, editing, and content analysis.

Generate custom Tianzi grid practice paper to standardize Chinese character writing structure.

Quickly extract phone numbers from text. Supports multiple formats and automatically filters invalid digits.

Quickly count the frequency of duplicate lines in your text. Ideal for data cleaning, log analysis, and text processing.

Highlight additions, deletions, and modifications between two texts or code snippets. Ideal for document proofreading, version control, and code review.