Free QA & Testing Tools

WordsCompare provides browser-based utilities for QA engineers, software testers, automation testers, API testers, and SDET engineers who need quick validation, comparison, and debugging support.

QA engineers Software testers Automation testers API testers SDET engineers

Popular QA workflows

API Testing

JSON Formatter JSON Viewer Text Compare JWT Decoder Base64

Automation

Find & Replace Case Converter Reverse Text Text Compare

Comparison

Text Compare JSON Viewer Case Converter Find & Replace

API Testing

5 tools

JSON Formatter

Format, prettify, and validate payloads used in API responses and request bodies.

JSON Viewer

Review structured JSON output in a readable format for debugging and QA checks.

URL Encoder

Prepare query strings, encoded parameters, and URL-safe values for API testing.

Base64 Encoder

Encode and decode request values or payload fragments during API troubleshooting.

JWT Decoder

Inspect token headers and payloads during authentication and access testing.

Test Data

4 tools

Case Converter

Create consistent test inputs for identifiers, field names, and user content.

Reverse Text

Generate edge-case content for negative and boundary testing.

Word Counter

Measure text length, word counts, and content volume for QA validation.

Remove Extra Spaces

Clean test data and format strings before validation or comparison.

Automation Testing

2 tools

Find & Replace Text

Create fast search-and-replace checks and test dataset transformations.

Text Compare

Compare expected versus actual output during script and UI verification.

Security / Authentication

1 tool

Hash Generator

Generate hashes for verification, integrity, and token-related checks.

Related categories

Developer Tools API Testing Tools Text & Content Tools JSON Tools