Free QA & Test Tools
Test data generators, spec validators, locator builders, and comparison tools to speed up manual and automated QA workflows.
Your data stays in your browser
Sensitive inputs (tokens, passwords, keys, and configs) are processed locally in your browser and is never sent to a server.
All tools · QA
1–10 of 20
JSON Formatter
Prettify, minify, sort keys, and format API JSON responses.
Markup & Config Formatter
Prettify and minify YAML, TOML, XML, HTML, CSS, and GraphQL.
Data Format Converter
Convert between CSV, JSON, Markdown tables, and reshape nested JSON structures.
Diff & Compare Suite
Side-by-side diff for text, JSON, CSV, YAML, XML, and dotenv files.
JSON Inspector
Validate against schemas and estimate JSON payload sizes.
JSON Query & Patch
Extract paths, apply RFC 6902 patches, and merge JSON documents.
Environment File Tools
Parse .env files and convert Postman environments to dotenv format.
JWT Builder & Inspector
Build unsigned JWTs and inspect header and expiry claims.
XPath & CSS Selector Tester
Test XPath-like paths on XML and CSS selectors on HTML snippets.
HTTP Toolkit
cURL to fetch, status codes, headers, content types, and MIME lookup.
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