FREE QA & DEVELOPER TOOLS
Test faster. Debug smarter.
A practical collection of browser-based utilities and original QA guides for software testers, QA engineers, automation engineers and developers. Your data stays in your browser.
POST /api/login
HTTP/1.1 200 OK
{
"status": "success",
"token": "••••••••"
}
TOOLBOX
Practical testing utilities
All core tools run in the browser. No account is required. Use the search box above or view the full catalog.
JSON Formatter
Format, validate and minify JSON.
CSV to JSON Converter New
Convert CSV tables and JSON arrays in both directions.
Base64 Encoder
Encode and decode Base64 text.
URL Encoder
Encode and decode URL components.
Timestamp Converter
Convert Unix timestamps and dates.
UUID Generator
Generate cryptographically random UUID v4 values.
JWT Decoder
Inspect JWT header and payload locally.
JWT Encoder New
Build and sign HS256/384/512 test tokens.
Regex Tester
Test regular expressions against sample text.
HTTP Status Codes
Search common HTTP response codes.
HTTP Headers
Reference common request and response headers.
Random Test Data
Generate simple names, emails and IDs.
Random Profile Generator New
Full profiles with phones, addresses and test cards.
Color Converter
Convert HEX, RGB and HSL colors.
Cron Generator
Build common cron expressions.
Password Generator
Generate random passwords locally.
API Response Viewer
Pretty-print an API response body.
SQL Formatter
Basic browser-side SQL formatting.
XML / YAML Formatter New
Format XML and convert between JSON and YAML.
Diff Checker New
Compare two texts line by line.
Hash & HMAC Generator New
Generate SHA hashes and HMAC signatures locally.
HTTP Request Tester New
Send lightweight browser requests and inspect responses.
Test Case Generator New
Turn a form into a structured test case.
Bug Report Generator New
Produce reproducible, structured bug reports.
CATEGORIES
Built around real QA work
Browse tools grouped by the kind of task they solve.
API Testing
JSON, JWT encode/decode, request tester, response viewer and HTTP references.
Test Data
Random data, realistic profiles and CSV conversion for fixtures and seeding.
Automation
Regex, UUIDs, cron expressions and developer utilities for test code.
Formatting
JSON, SQL, XML and YAML formatting plus JSON/YAML conversion.
Debugging
Encoding, timestamps, diffing, colors and quick references.
Security
Password generation and cryptographic hash & HMAC helpers.
Test Docs
Structured test case and bug report generators.
HTTP Reference
Status codes and common headers for verification.
GUIDES
QA engineering guides
Practical, original guides to grow your QA skills. View all in the guide library.
API Testing Guide
Learn the fundamentals of API testing, test cases and automation strategy.
REST API Best Practices New
Resource design, methods, status codes, pagination and error handling.
HTTP Status Codes Explained
Understand 2xx, 3xx, 4xx and 5xx responses with testing examples.
How to Test JSON APIs
Practical validation, schema, negative and edge-case testing techniques.
JWT Explained for Testers
Understand JWT structure, claims and common API testing checks.
Software Testing Basics New
Types and levels of testing, SDLC and what a good test strategy contains.
How to Write Good Test Cases New
Structure, techniques and examples for clear, maintainable test cases.
Automation Testing Guide New
Playwright, Cypress, framework anatomy and handling flakiness.
Bug Reporting Guide New
Write clear, actionable bug reports developers can reproduce quickly.
SQL for Testers New
Essential queries for verification, joins and test data setup.
Performance & Security Testing New
Load, stress, soak and OWASP basics for QA engineers.
Test Data Management New
Synthetic data, masking and keeping environments in sync.
FAQ
Frequently asked questions
Do these tools send my input to a server?
No. Every tool runs in the browser. There is no backend and no database, so plain input such as JSON payloads, tokens and test data never leaves your machine.
Is Base64 encryption?
No. Base64 is an encoding format, not encryption. Anyone who has the encoded value can decode it, so never use it to protect sensitive data.
Can I use these tools for test data generation?
Yes. Several tools generate realistic fake data, formatted JSON, random profiles, test case and bug report templates for development and QA work.
Is the HTTP request tester safe to use on any API?
The tester only works with APIs that allow cross-origin calls from the browser (CORS). Private or internal endpoints typically need a proper API client such as Postman.
Do I need an account?
No. The tools and guides are free and anonymous. You never need to create an account or upload test data.