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Browse the tool catalog | Page 93

Search and filter the online tool directory by task, format, and category, then open detailed pages with clear inputs, examples, and execution context. Page 93.

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Math, Date & Finance586

Calculators, numerics, date logic, statistics, and finance tools

Images, Audio & Video564

Image, audio, and video processing, conversion, and optimization tools

Design & Color284

Color, layout, graphics, visual styling, and design helper tools

Text & Writing200

Writing, cleanup, formatting, extraction, and text analysis tools

Conversion & Encoding167

Format, file, archive, unit, and encoding conversion tools

Developer & Web163

Developer utilities, networking, web debugging, and automation helpers

Audio Encoding and Format Conversion Tools

Image Format Conversion and Animated Export Tools

JSON Interchange and Format Translation Tools

Color Space Conversion Tools for Web and Print

Text Case, Encoding, and Normalization Conversion Tools

Docs Pricing Terms of Service Privacy Policy Contact

Document Tools

PDF Page Numbering Styles

Convert HTML to PDF with Roman, Arabic, or chapter-prefixed page numbers

Document Tools

PDF Page Master Template (PDF页面母版模板)

Generate a master page PDF with margins, grid, header/footer zones, and column guides

Document Tools

PDF RTL/LTR Support Tester (PDF双向文字测试)

Preview left-to-right and right-to-left text flow in PDF with bidi reordering

Document Tools

PDF Section & TOC Generator (PDF章节目录生成器)

Build a PDF with a generated table of contents and section placeholders

Development

Path Analyzer

Analyze file paths, identify Windows/Unix formats, extract components, and normalize paths

Document Tools

PDF Basic Document Generator (PDF基础文档生成器)

Create PDF documents with text, paragraphs, headers, footers, and page numbers

Document Tools

PDF Multi-Column Layout (PDF多栏排版)

Create newspaper/magazine style documents with 2 or 3 columns

Health

One Rep Max Calculator

Calculate your estimated one repetition maximum (1RM) for weightlifting

Validation

Passport Validator

Validate passport numbers from different countries (China, USA, Japan, etc.)

Media

OGG to MP3 Converter

Convert OGG Vorbis audio to MP3 with bitrate, resampling, and channel options

Media

Opus to MP3 Converter

Convert Opus audio to MP3 with selectable bitrate, resampling, and channel options

Data Visualization

Parallel Coordinates Chart Generator

Generate parallel coordinates charts for multidimensional data visualization with customizable normalization