Free Developer Utilities

Developer Tools for Quality Engineers

Free mock backends, test recorders, and visual defect checkers engineered to accelerate testing workflows across modern engineering teams.

Product-Minded Engineering

We Build The Tools Quality Engineers Use

We are not just a testing agency. We build and maintain production developer tools for automated testing, selector generation, and visual AI defect detection.

SDET Sandbox

QA Fake API

The Mock REST API Built Specifically for SDETs

Instant mock backend sandbox for automated testing. Simulates CRUD operations, JWT authentication, delayed network latency (500ms to 5s), and HTTP error status codes (400, 401, 403, 404, 500) on demand.

Simulate 500 Internal Server Errors or 429 Rate Limits with query params
Mock JWT authorization headers and token verification flows
Realistic datasets for users, invoices, e-commerce products, and carts
Zero registration required, 100% free and open for public testing
Chrome Extension

Auto-Mate

Smart Cypress Test Recorder & Selector Generator

Chrome extension that converts your natural browser clicks, form fills, and navigation flows into clean, production-ready Cypress test scripts with resilient data-testid prioritization.

Automatic selector prioritization: data-testid > ID > accessible role > CSS
Generates clean, maintainable Cypress assertion code in real-time
One-click copy or export to .cy.ts file
High stability and memory isolation across Chromium browsers
AI Vision

UI Bug Detector

AI Visual Defect & Regression Scanner

Intelligent layout analysis utility that scans web pages for overlapping elements, text clipping, broken aspect ratios, and color contrast accessibility failures.

Pixel-level visual layout discrepancy highlighting
WCAG 2.1 color contrast compliance checking
Identifies mobile viewport overflowing elements
Generates actionable visual issue reports
Supported Ecosystem

Enterprise QA Toolchain & Supported Tech Stack

We seamlessly integrate into your company's existing engineering stack with industry-standard frameworks and cloud infrastructure.

Web Automation

Cypress, Playwright & Selenium

Page Object Models in TypeScript & JavaScript, Cypress time-travel debugging, and Selenium WebDriver parallel grid clusters.

CypressPlaywrightSelenium Grid
API & Load

Bruno, Postman & JMeter

Git-native .bru collections version-controlled alongside code, automated Postman contract assertions, and JMeter concurrency stress.

Bruno APIPostmanJMeter
Mobile Testing

Appium & Physical Hardware

Cross-platform mobile automation with Appium (UIAutomator2 & XCUITest), offline Room/SQLite persistence, and memory leak profiling.

AppiumAndroid KotliniOS Swift
Test Management

Jira, Mantis BT & TestRail

Comprehensive test scenario matrices in TestRail, systematic defect lifecycles in Jira and Mantis with exact reproduction steps.

JiraMantis BTTestRail
Cloud Device Labs

BrowserStack & LambdaTest

Real cross-browser matrix verification across 3,000+ actual devices and OS combinations (Chrome, Safari, Firefox, Edge).

BrowserStackLambdaTest
Agile Methodology

Certified Scrum Master (CSM)

Agile Scrum delivery, daily standup defect triage, sprint boundary management, and strict Definition of Done (DoD) sign-offs.

CSM CertifiedAgile STLCSprint Sign-off
Interactive Code Example: Try QA Fake API with Playwright

Simulate realistic server errors (500, 429) or network latency inside your Playwright or Cypress tests without setting up an in-house mock server:

// Test server error handling in Playwright
test('handles backend 500 error gracefully', async ({ page }) => {
  const response = await page.request.get('https://qafakeapi.ziaratechqlabs.in/api/users?status=500');
  expect(response.status()).toBe(500);
});
100% Free, zero authorization key required for public endpoints.Explore Full API Documentation →