115 + Web tools and resources
JSONView
DataView JSON in a browser, with syntax highlighting, collapsible arrays and objects, and nice readable formatting.
Winded
Exploratory TestingAn online tool to test responsive layouts that lets you view multiple device sizes simultaneously, just enter a URL to test.
ColorContrast.App
Accessibility TestingCheck and suggests colors to meet the required WCAG or APCA contrast ratio.
Faker.js UI
Test Data GenerationEasiliy generate fake (but realistic) data for testing and development using Faker.js.
Mockaroo
Test Data GenerationGenerate up to 1,000 rows of realistic test data in CSV, JSON, SQL, and Excel formats. Free!
Infinite Mac
DevToolsCollection of classic Macintosh system releases and software accessible from the web browser.
DamnGood.Tools
DevToolsA set of free tools that includes a responsive design tester, detect fonts, Chat with any PDF and more.
HTML Size Analyzer
Performance TestingAnalyze HTML size and catch bloat like inline images, large React hydration state, or code duplication.
WebPageTest GitHub Action
Performance TestingA GitHub Action that lets you automatically run tests against WebPageTest on code changes.
Allinone Tools
DevToolsone-stop resource with tons of little utilities for formatting, editing, generating, minifying, and so on.
WebPageTest
Performance TestingA web performance tool providing deep diagnostic information about how a page performs under a variety of conditions.
