Office

Random Email Address Generator

Generate single or bulk email-format test data with RFC-reserved example domains, or add domains you own or are authorized to test.

Random Phone Number Generator

Generate a formatted random phone number by country, region, carrier, or prefix for software testing, demos, and sample data.

Random Decimal Generator

Generate random decimals with a specified range, decimal places, and quantity. Ideal for data analysis, simulation experiments, and more.

Chinese D-Series Paper Size Lookup

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.

US Paper Size Chart

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

B Series Paper Size Chart & Dimensions Guide

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

Text Flipper

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

C Series Paper Size Chart & Envelope Dimensions

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

Special Character Lookup

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

Online Word Counter

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

Chinese Writing Grid Generator

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

Duplicate Line Counter

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

Word to HTML Converter

Convert Word documents into web-ready HTML code to solve formatting and compatibility issues for online publishing.

German Paper Size Chart

Check ISO 216 (DIN 476) German standard paper sizes online. Includes a complete mm and inches reference chart for A and B series.

Chinese Calligraphy Grid Generator

Generate custom Chinese calligraphy grid paper to improve your handwriting and master character strokes.

Online UBB Editor & Code Generator

Online UBB code generator and editor for forum posting and blog formatting. Quickly convert plain text into UBB format.

Taiwan Paper Size Lookup

Provides a millimeter size reference chart for Japanese Kiku and Chinese 4/6 paper formats, ideal for the printing, design, and publishing industries.

PDF to XML Converter

Convert PDF documents into structured XML format for easy data extraction and system integration.

Text Line Counter

Accurately count the number of lines in any text. Ideal for code auditing, document editing, and log analysis.

Find and Replace Text Tool

Find and replace specific strings in your text online. Supports batch replacement, perfect for content editing, data cleaning, and document proofreading.