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Browse the tool catalog | Page 78

Search and filter the online tool directory by task, format, and category, then open detailed pages with clear inputs, examples, and execution context. Page 78.

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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 & Encoding164

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

Developer & Web161

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

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Math & Numbers

Sample Variance Calculator

Calculate sample variance with the n - 1 denominator for estimating spread from a sample dataset

Math & Numbers

Standard Deviation Calculator

Calculate sample and population standard deviation, variance, coefficient of variation, and sigma intervals

Math & Numbers

Sum Of Series Calculator

Sum arithmetic series, geometric series, or a custom list of terms

Math & Numbers

Sequence Calculator

Calculate arithmetic, geometric, and Fibonacci sequences, including the nth term, the first terms, and the partial sum

AI Tools

Scanned PDF OCR to Markdown

Convert scanned or image-heavy PDFs into Markdown with OpenDataLoader hybrid OCR, with a graceful fallback when the hybrid backend is unavailable

Math & Numbers

Rounding Calculator

Round numbers to integers, decimal places, tens, or hundreds using a simple rounding mode selector

Math & Numbers

Significant Figures Calculator

Count significant figures and round numbers to a target number of significant digits

Math & Numbers

Square Root Calculator

Calculate square roots, check whether a value is a perfect square, and verify the squared result

Math & Numbers

Scientific Notation Calculator

Add, subtract, multiply, and divide values written in scientific notation, then return standard, scientific, and engineering forms

Math & Numbers

Scientific Notation Converter

Convert numbers between standard decimal format and scientific notation, with optional engineering notation output

Validation

Screen Reader Simulation Tester

Simulate the reading order and spoken semantics a screen reader may expose from a URL or raw HTML, then flag likely accessibility gaps

Data Processing

Structured Log Analyzer

Detect common log formats, extract core fields, infer field types, and export parsed logs as JSON, CSV, or SQL inserts