SDET & QA Toolbox
28+ free client-side tools and 0 AI-powered tools for automation engineers. No data stored. JSON, YAML, Regex, Cron, CSS selectors, test case generation, and more.
JSON Formatter & Validator
Beautify, minify, and validate JSON. Catch syntax errors instantly.
JWT Decoder
Decode JWT tokens and inspect header, payload, and signature.
Base64 Encode / Decode
Encode text or decode Base64 strings. Supports URL-safe variant.
Regex Tester
Write and test regular expressions with live match highlighting.
Test Data Generator
Generate realistic fake data for names, emails, phones, UUIDs, and more.
JSON Diff
Compare two JSON objects and highlight the differences.
JSONPath Tester
Run JSONPath expressions against JSON and see results instantly.
cURL to Code
Convert cURL commands to Python requests, JS fetch, or Java RestAssured.
XPath Tester
Test XPath expressions against HTML. Essential for Selenium locators.
Diff Checker
Compare two blocks of text line by line. Unified and split view with context control.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes.
URL Encoder / Decoder
Encode/decode URLs with encodeURI or encodeURIComponent.
AI Readiness Quiz
Evaluate your team's readiness for the Agentic Era.
YAML Formatter & Validator
Beautify, validate, and convert YAML. Supports YAML↔JSON.
CSV ↔ JSON Converter
Convert CSV to JSON or JSON to CSV instantly.
JSON to Schema Generator
Paste JSON → generate JSON Schema for API contract testing.
HTTP Status Code Reference
Interactive HTTP status code lookup with assertion tips.
CSS Selector Tester
Test CSS selectors against HTML. Built for Playwright & Cypress.
Cron Expression Parser
Explain and validate cron schedules with next-run preview.
Gherkin Formatter
Format and validate BDD/Cucumber scenarios online.
Environment Variable Parser
Parse .env files into a table. Export as JSON, shell, or Docker.
Playwright Locator Advisor
Paste HTML snippet, get ranked Playwright locator strategies.
k6 Performance Script Generator
Fill out a form to generate a ready-to-use Grafana k6 load testing script.
Test Coverage Calculator
Calculate statement, branch, and requirement traceability coverage.
API Response Time Analyzer
Upload a HAR file to visualize API performance percentiles.
Test Naming Linter
Check if your test names follow standard conventions.
Postman Collection Viewer
Render a Postman Collection JSON as an API reference.
All 28 Developer Tools for SDETs and QA Engineers
AutomationTester.in provides 28+ free, privacy-first developer tools and 0 AI-powered testing tools. Free tools run entirely in your browser — no data is stored or sent to any server. AI tools require a free account and are limited to 5 uses per day.