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Analytics & Research
Open tool A/B Test Duration Calculator
Create a bounded, browser-local a/b test duration calculator with visible assumptions, review guidance, and downloadable output.
BUILT AROUND THE TASK
Checkers and validators for faster quality review
Run bounded checks on supplied text, data, files, and configuration before the next step.
Choose a focused workspace
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Web & Social
Open tool HTTP Status Checker
Create a bounded, browser-local http status checker with visible assumptions, review guidance, and downloadable output.
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Math, Statistics & Probability
Open tool AB Test Calculator
Create a bounded, browser-local ab test calculator with visible assumptions, review guidance, and downloadable output.
Ready to use
Personal Money
Open tool Bank Fee Checker
Create a bounded, browser-local bank fee checker with visible assumptions, review guidance, and downloadable output.
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Accessibility
Open tool Caption File Checker
Create a bounded, browser-local caption file checker with visible assumptions, review guidance, and downloadable output.
Ready to use
Accessibility
Open tool Alt Text Length Checker
Create a bounded, browser-local alt text length checker with visible assumptions, review guidance, and downloadable output.
Ready to use
Accessibility
Open tool Color Contrast Checker
Create a bounded, browser-local color contrast checker with visible assumptions, review guidance, and downloadable output.
Ready to use
PDF & Documents
Open tool Edit PDF Bookmarks
Replace or append up to one hundred validated top-level PDF bookmarks.
Ready to use
Operations & Infrastructure
Open tool Docker Compose Validator
Create a bounded, browser-local docker compose validator with visible assumptions, review guidance, and downloadable output.
Ready to use
Careers & HR
Open tool ATS Resume Checker
Create a bounded, browser-local ats resume checker with visible assumptions, review guidance, and downloadable output.
Ready to use
Ecommerce & Marketplace
Open tool Catalog Data Validator
Create a bounded, editable catalog data validator from supplied merchant data with transparent rules and commerce safeguards.
Ready to use
Text, Writing & Language
Open tool Passive Voice Checker
Flag possible English passive constructions for manual contextual review.
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Automation & Integrations
Open tool Automation Test Checklist
Create a bounded, editable automation test checklist from supplied workflow facts with transparent rules and integration safeguards.
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Math, Statistics & Probability
Open tool Chinese Remainder Two-Congruence Calculator
Combine two coprime congruences and verify both residues.
Ready to use
Quality Assurance
Open tool Cross-browser Test Plan
Create a bounded, reviewable cross-browser test plan with visible assumptions, downloadable output, and accountable human review.
Ready to use
Quality Assurance
Open tool Database Test Checklist
Create a bounded, reviewable database test checklist with visible assumptions, downloadable output, and accountable human review.
Ready to use
Communications
Open tool Email Subject Line Tester
Create a bounded, browser-local email subject line tester with visible assumptions, review guidance, and downloadable output.
Ready to use
Quality Assurance
Open tool End-to-end Test Checklist
Create a bounded, reviewable end-to-end test checklist with visible assumptions, downloadable output, and accountable human review.
Ready to use
Education & Study
Open tool Essay Word Count Checker
Create a bounded, editable essay word count checker from supplied learning information with transparent rules and academic safeguards.
Ready to use
Education & Study
Open tool Essay Word Count Checker
Create a bounded, browser-local essay word count checker with visible assumptions, review guidance, and downloadable output.
Ready to use
Quality Assurance
Open tool Exploratory Test Charter
Create a bounded, browser-local exploratory test charter with visible assumptions, review guidance, and downloadable output.
Ready to use
Finance & Business
Open tool GST Invoice Checker
Check key Indian GST invoice fields and basic GSTIN structure without portal validation.
Ready to use
Accessibility
Open tool Heading Hierarchy Checker
Create a bounded, browser-local heading hierarchy checker with visible assumptions, review guidance, and downloadable output.
Ready to use
Math, Statistics & Probability
Open tool Hypothesis Test Calculator
Create a bounded, browser-local hypothesis test calculator with visible assumptions, review guidance, and downloadable output.