Math & Numbers
Count significant figures and round numbers to a target number of significant digits
sig-fig-calculatorMath & Numbers
Calculate square roots, check whether a value is a perfect square, and verify the squared result
square-root-calculatorMath & Numbers
Add, subtract, multiply, and divide values written in scientific notation, then return standard, scientific, and engineering forms
scientific-notation-calculatorMath & Numbers
Convert numbers between standard decimal format and scientific notation, with optional engineering notation output
scientific-notation-converterDeveloper Tools
Compare StructTree-enabled and plain PDF extraction to see whether a document behaves like a tagged PDF and how much semantic structure it exposes
tagged-pdf-inspectorValidation
Simulate the reading order and spoken semantics a screen reader may expose from a URL or raw HTML, then flag likely accessibility gaps
screen-reader-simulation-testerDevelopment
Parse Terraform plan JSON or text output, classify resource changes, and surface a dependency-oriented summary before apply
terraform-plan-visualizerMath & Numbers
Estimate required sample size for proportions or means using confidence level, margin of error, and optional finite population correction
sample-size-calculatorMath & Numbers
Run one-sample or two-sample t-tests from raw data and inspect t statistics, degrees of freedom, and p-values
t-test-calculatorGenerator
Generate structured test data from field configuration with support for faker fields, regex rules, credit cards, IDs, and batch export
test-data-faker-builderDocument Tools
Convert TipTap, Quill, or Slate JSON exports into a styled PDF document
richtext-json-to-pdfData Processing
Extract a section of an array using lodash _.slice
slice-array