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Browse the tool catalog | Page 181

Search and filter the online tool directory by task, format, and category, then open detailed pages with clear inputs, examples, and execution context. Page 181.

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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

Development

API Contract Mutation Tester

Mutate OpenAPI request fields into semantically risky variants and optionally send them to a real backend to check defensive validation coverage

Data Processing

CSV to Database Migration Planner

Infer a relational schema from CSV data and generate create-table plus ALTER migration plans for PostgreSQL, MySQL, SQLite, or SQL Server

Security

CSV/JSON Data Watermarker

Inject visible or signature-style watermark fields into CSV or JSON exports so shared datasets can be traced later

Development

API Response Contract Validator

Validate a real API response JSON against the response schema declared in an OpenAPI 3.x specification

Development

API Breaking Changes Detector & Migration Planner

Compare two OpenAPI 3.x schemas, identify breaking changes, grade client impact, and suggest migration or compatibility strategies

Data Processing

CSV / Excel Diff Tool

Compare two CSV or XLSX datasets and export a PDF report with row, column, and cell-level differences

Development

Cron Job Simulator

Simulate the next runs of one or two 5-part cron expressions, highlight overlaps, and warn about overly dense schedules

Development

API Contract Stress Tester

Generate boundary-value test cases from an OpenAPI 3.x document and optionally send them to a real backend to spot contract mismatches

Math & Numbers

Byte to MB

Convert bytes to megabytes using the decimal MB standard with configurable precision

Math & Numbers

Celsius to Fahrenheit

Convert Celsius to Fahrenheit with configurable decimal precision

Development

Cron Expression Visualizer

Parse cron schedules, validate standard or Quartz syntax, and visualize the next execution times on a timeline and grouped calendar view

Development

API Doc Generator

Generate polished API documentation from OpenAPI or annotated comments