The QA Engineer's Toolkit

Format, validate, convert and generate test data.

• JSON FormatterPopular Pretty-print JSON with 2/4-space or tab indent and sorted keys.
• JSONPath TesterPopular Try JSONPath expressions on real JSON and see every match and path.
• JWT DecoderPopular Decode JWT header and claims, check expiry and spot risky settings.
• Regex TesterPopular Test JS regex with live highlighting, groups and replace preview.
• XPath & CSS Selector TesterPopular Test XPath and CSS locators against HTML and see what they match.
• Base64 Encoder / Decoder UTF-8-safe Base64 and Base64URL encoding, decoding and file encoding.
• CSV to JSON Converter Convert CSV to JSON with delimiter detection and type inference.
• JSON Diff Checker Compare two JSON documents semantically, with a path for every change.
• JSON Minifier Strip whitespace from JSON and see the size saving.
• JSON Schema Validator Validate JSON against draft 2020-12 or draft-07 schemas, or infer one.
• JSON to CSV Converter Flatten JSON arrays into CSV with dot-notation columns.
• JSON Validator Check JSON syntax and pinpoint the exact error location.
• Random Test Data Generator Generate realistic fake rows as JSON, CSV or SQL INSERT statements.
• UUID Generator Bulk UUID v4 and v7 generator with a validator and timestamp decoder.
• XML Formatter Pretty-print or minify XML while keeping CDATA, comments and PIs.
• XML Validator Check XML is well-formed and see the error line and column.

Payloads, cURL, assertions and HTTP references.

• API Payload GeneratorPopular Turn a JSON Schema or sample body into valid and negative payloads.
• cURL Command GeneratorPopular Build or parse curl commands and convert them to test code.
• HTTP Status Code ReferencePopular Every HTTP status code with what to verify and the bugs to look for.
• API Assertion Builder Generate Playwright, Postman, REST Assured or Cypress assertions.
• API Response Validator Run JSONPath, status and header checks against a pasted response.
• Auth Header Generator Build Basic, Bearer and API key headers with cURL and Playwright.
• cURL to Code Converter Convert a curl command into Playwright, REST Assured or Python code.
• HTTP Headers Reference Request and response headers that matter when testing APIs.
• REST API Test Case Templates Generate a structured REST API test checklist for an endpoint.
• Sample JSON Payload Library Realistic request and response bodies for common API test scenarios.

Bug reports, Jira tickets, test cases and plans.

• Jira Bug Ticket GeneratorPopular Fill a form, get a Jira bug in wiki markup, Markdown or plain text.
• Test Case GeneratorPopular Ready-made test cases for login, API, upload, checkout and more.
• Bug Report Generator Structured bug reports with reproducibility, regression and evidence.
• Bug Severity and Priority Reference Definitions, real examples and a 4-question severity/priority helper.
• Requirement Traceability Matrix Generator Map requirements to tests, find gaps and orphans, export CSV.
• Test Automation Readiness Scorecard Twelve questions, a score out of 100 and next steps for your team.
• Test Coverage Calculator Requirement, execution and code coverage with formulas explained.
• Test Data Template Generator Define fields and constraints, get valid, boundary and invalid rows.
• Test Execution Report Pass rate, progress and defects in a release-ready summary report.
• Test Plan Generator IEEE 829-style test plan with scope, criteria, risks and schedule.
• Test Scenario Generator Turn a user story and acceptance criteria into scenarios and Gherkin.

Resume, salary and interview-readiness utilities.

• ATS Resume Checker for QA & SDETPopular ATS-style keyword and structure check against a job description.
• CTC to In-Hand Salary Calculator Split a CTC offer into monthly gross, deductions and in-hand pay.
• LinkedIn Headline Generator for Testers Generate keyword-rich LinkedIn headlines for QA and SDET profiles.
• Notice Period Calculator Find your last working day and estimate a notice buyout.
• QA & SDET Skills Gap Checklist Rate yourself against a target QA/SDET role and get a ranked gap list.
• Resignation Letter Generator Professional resignation letters and emails with correct notice dates.
• Salary Hike Calculator Hike % ↔ new salary, real hike after inflation, offer comparison.
• SDET Career Roadmap A step-by-step path from manual QA to SDET, with lessons per stage.
• SDET Resume Builder Build a clean ATS-friendly resume; save as PDF, text or Markdown.

Boundary values, pairwise, cron, hashes and more.

• Boundary Value CalculatorPopular Boundary values and equivalence classes for numbers, lengths, dates.
• Cron Expression Explainer Cron to plain English, plus the next run times in any time zone.
• Gherkin Formatter and Linter Indent .feature files, align tables and catch common mistakes.
• GitHub Actions Workflow Generator for Tests Build a CI workflow for Playwright, Cypress, Selenium or pytest.
• Hash & HMAC Generator MD5, SHA-1/256/384/512 and HMAC for text or files, hex or Base64.
• Pairwise Test Generator All-pairs combinations with constraints, verified coverage and CSV.
• Test Estimation Calculator Estimate test effort with PERT, work breakdown or a dev-effort ratio.
• Test String Generator Counterstrings, exact-length, Unicode, whitespace and probe strings.
• Text Diff Checker Compare two texts by line, word or character, side by side.
• Unix Timestamp Converter Unix seconds or ms to ISO 8601 and readable dates in any time zone.
• URL Encoder / Decoder Percent-encode or decode text, parse query strings, break down URLs.