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Browse the tool catalog | Page 145

Search and filter the online tool directory by task, format, and category, then open detailed pages with clear inputs, examples, and execution context. Page 145.

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Math, Date & Finance639

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

Images, Audio & Video597

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

Design & Color294

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

Text & Writing206

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

Developer & Web188

Developer utilities, networking, web debugging, and automation helpers

Conversion & Encoding172

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

Absorbance Quantification and Acid-Base Calculations

JSON Structure Surgery

Tabular Data Cleanup, Shaping, and Normalization

Professional Assembly of an Excel Workbook

PDF Repair, Cleanup, and Slimming

Docs Pricing About Terms of Service Privacy Policy Contact

Text Processing

Pangram Checker

Check if text is a pangram (contains every letter of the alphabet). Reports missing letters, used letters, and unique-letter count.

Text Processing

Pig Latin Converter

Convert English text to and from Pig Latin. Handles consonant clusters, vowel words, QU units, and capitalization.

Development

package.json Dependency Auditor

Audit a package.json for dependency hygiene, version-range quality, and optionally inspect a transitive dependency tree from package-lock.json or yarn.lock. Flags duplicates, wildcard or pre-release specs, unsorted keys, missing metadata, and misclassified runtime/dev dependencies.

AI Tools

PNG Table Screenshot to Excel

Use MiniMax M3 vision to recognize a table from a PNG screenshot and export the reconstructed grid to Excel

Science & Education

Physics Kinematics Problem Solver

Solve 1D constant-acceleration kinematics problems and 2D projectile motion, with a full step-by-step derivation. Enter any 3 of the 5 quantities (displacement, initial velocity, final velocity, acceleration, time) and the solver finds the other two, showing each formula, the substitution, and the result. For projectiles, enter launch speed/angle/height to get range, time of flight, and max height.

Security

Numeric OTP Generator

Generate cryptographically secure one-time numeric codes (SMS / email verification, raffle codes, event pins) with configurable length (3-10 digits), bulk output, optional ambiguous-digit exclusion, and an optional expiry countdown. Uses crypto.randomInt, not Math.random.

Security

Password Strength Meter

Estimate real password strength with Shannon entropy, zxcvbn pattern matching (l33t, dictionary, sequences, repeats) and brute-force crack-time across attack scenarios (offline fast/slow hash, online). The password is evaluated locally and never sent anywhere.

Validation

OpenAPI / Swagger Validator

Validate OpenAPI 3.0/3.1 and Swagger 2.0 documents structurally: required fields, path/operation completeness, response codes, $ref resolution, operationId uniqueness, and component integrity

AI Tools

Prompt Optimizer

Rewrite a raw prompt into a more structured version, score clarity and ambiguity, and show prompt improvement hints

Document Tools

PDF/A Convert

Convert PDF documents to a self-declared PDF/A archival profile with zero external dependencies

Document Tools

PDF/A Validate

Pre-validate PDF documents for PDF/A archival compliance

Document Tools

PDF Accessibility Check

Audit PDF documents for accessibility features like tagging, language and PDF/UA metadata