Best Web testing tools in 2024

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Mockaroo

Test Data Generation

Generate up to 1,000 rows of realistic test data in CSV, JSON, SQL, and Excel formats. Free!

Free Plan

Text Cleaner

DevTools

Simple Text cleaner and formatter tool to perform complex operations.

Free

JSONFormatter.net

DevTools

JSON formatter and validator tool

Free

Rayrun

DevTools

Collection of 70+ testing and development productivity tools — all in one place!

Free

Infinite Mac

DevTools

Collection of classic Macintosh system releases and software accessible from the web browser.

Free

DamnGood.Tools

DevTools

A set of free tools that includes a responsive design tester, detect fonts, Chat with any PDF and more.

Free

RegExGPT

Data

Generate regex patterns by inputting an example of the text.

Free

Accessibility Checker

Accessibility Testing

A free online ADA and WCAG compliance checker.

Free

WebPerformance Report

Performance Testing

Web performance report every week in your inbox.

Free

Trace Cafe

Performance Testing

Easy web performance trace sharing

Free

Ctool

DevTools

Commonly used software development and testing tools

Free

RegxGo

Data

An easy-to-use, AI-powered regular expressions generator.

Free

ezy

API Testing

GUI client for gRPC/gRPC-Web

Free

JSON Formatter

DevTools

Makes JSON easy to read. Open source.

Free

grex

Data

Generate a matching regular expression from the test cases you provide

Free

ProAutoma API Tester

API Testing

Online REST API client

Free with Paid Plan

GradeJS

Security Testing

Analyze webpack production bundle

Free

CyrilEx Regex Tester

Data

Cyrilex is a regular expression tester and visualizer

Free

BITB

Security Testing

Browser templates for Browser In The Browser (BITB) attack.

Free

HTML Size Analyzer

Performance Testing

Analyze HTML size and catch bloat like inline images, large React hydration state, or code duplication.

Free

UPDF

DevTools

Supports editing text and images in a PDF across all platforms.

Free

WebPageTest GitHub Action

Performance Testing

A GitHub Action that lets you automatically run tests against WebPageTest on code changes.

Free

JSON Hero

DevTools

A beautiful JSON explorer packed with features

Free

Allinone Tools

DevTools

one-stop resource with tons of little utilities for formatting, editing, generating, minifying, and so on.

Free

WebPageTest

Performance Testing

A web performance tool providing deep diagnostic information about how a page performs under a variety of conditions.

Free with Paid Tire

Contrast Grid

Accessibility Testing

Check compliance with WCAG 2.0 minimum contrast

Free

TestCaseHub

Test Case Management

A repository of Test Cases and Scenarios

Free

AChecker

Accessibility Testing

An open source web accessibility checker

Free

JsonT.run

DevTools

online JSON formatting and processing tool with powerful functions

Free

It Tools

DevTools

Aggregated set of useful tools that every developer and tester may need once in a while.

Free

JS & CSS Minifier

DevTools

Make your website smaller and faster by minifying the JS & CSS code!

Free

Google Jamboard

DevTools

A free online collaborative whiteboard app

Free

Text comparator

Other

This simple yet effective tool helps you compare two texts, and reveals the similarities and differences.

Free

Security List

Security Testing

Curated lists of tools, tips and resources for protecting digital security and privacy

Free

107 + Web tools and resources