Free tools for QA, SDETs & Consultants

Formatters, generators, encoders, API testing helpers, and complete tutorials for the frameworks you use every day.

Framework Tutorials

6 in-depth tutorials for Selenium, Playwright, SOAP UI, Appium, Espresso, XCUITest.

Browse

Mock REST API

Free JSONPlaceholder-style endpoints for API testing practice — users, posts, products, auth.

Explore

All Tools

37 tools across 10 categories. Everything runs in your browser.

Formatters

JSON Formatter

Format, validate, and minify JSON.

XML Formatter

Pretty-print and validate XML.

YAML Formatter

Format and validate YAML documents.

SQL Formatter

Format SQL queries for readability.

HTML Formatter

Format and beautify HTML markup.

Encoders/Decoders

Base64 Encoder / Decoder

Encode and decode Base64 strings.

URL Encoder / Decoder

URL-encode and decode text.

JWT Decoder

Decode and inspect JSON Web Tokens.

HTML Entities Encoder / Decoder

Escape and unescape HTML entities.

Generators

UUID Generator

Generate v1 and v4 UUIDs.

Password Generator

Generate strong random passwords.

Hash Generator

MD5, SHA-1, SHA-256, SHA-512 hashes.

Lorem Ipsum Generator

Generate placeholder text.

Test Data Generator

Generate fake names, emails, phones, addresses.

String Tools

Regex Tester

Test regular expressions live.

Diff Checker

Compare two text blocks side-by-side.

Case Converter

camelCase, snake_case, PascalCase, kebab-case.

String Escape / Unescape

Escape strings for JSON, JS, HTML.

Word & Character Counter

Count words, characters, lines.

API Tools

cURL Builder

Build cURL commands from a form.

REST API Tester

Send HTTP requests from your browser.

Postman → cURL Converter

Convert a Postman request to cURL.

Date/Time

Timestamp Converter

Convert Unix timestamps to dates.

Cron Expression Parser

Explain and validate cron expressions.

Date Diff Calculator

Calculate difference between two dates.

Number/Color

Base Converter

Convert numbers between hex, bin, oct, dec.

Color Converter

Convert between HEX, RGB, HSL.

Validators

JSON Schema Validator

Validate JSON against a schema.

Email Validator

Validate email address format.

URL Validator

Validate and parse URLs.

Credit Card Validator

Validate card numbers via Luhn algorithm.

QA-Specific

Test Case Template Generator

Generate standardized test case templates.

Bug Report Template

Generate consistent bug report templates.

Defect Metrics Calculator

Calculate defect density, DRE, and more.

Security

XSS Payload Library

Curated XSS payloads for testing.

SQL Injection Payload Library

Curated SQLi payloads for testing.

OWASP Top 10 Checklist

Interactive OWASP Top 10 checklist.

Tutorials

Web UI

Selenium + Java

The industry-standard web automation framework

Playwright + JavaScript

Modern, fast, and reliable end-to-end testing

API

SOAP UI + REST & SOAP

Powerful API testing for SOAP and REST services

Mobile

Appium + Cross-platform

Cross-platform mobile automation for Android & iOS

Espresso + Kotlin / Java

Fast, reliable native Android UI testing

XCUITest + Swift

Native iOS UI testing with Xcode