Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
TypeScript tsconfig Generator
Generate tsconfig.json files visually. Select a framework preset or customize every option for your TypeScript project.
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Module & Output
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What is TypeScript tsconfig Generator?
tsconfig.json is the configuration file for TypeScript projects. It tells the TypeScript compiler how to transpile your code — which ECMAScript target to use, how modules are resolved, which strict checks to enable, and where output files should go.
This generator helps you create a tsconfig.json file without memorizing all compiler options. Select a framework preset (Node.js, React, Vue, Next.js, NestJS) or customize every option manually. The output updates in real time and follows TypeScript best practices.
How to Use
- Select a Preset or Customize — Choose a framework preset (Node.js, React, Vue, etc.) or select "Custom" to configure everything manually.
- Configure Compiler Options — Adjust target, module system, module resolution, JSX handling, and strict mode settings using the form controls.
- Set Paths and Directories — Configure the out directory, root directory, and path aliases. Path aliases support the
@/* -> ./src/*format common in modern frameworks. - Preview in Real Time — The generated tsconfig.json updates automatically as you change any option.
- Copy or Download — Use the copy button or download button to save the file. Place it in your project root as
tsconfig.json.
Frequently Asked Questions
What is the difference between target and module?
Target controls the JavaScript language version of the output (e.g., ES2022, ES6). Module controls the module system used in the output (e.g., CommonJS for Node.js, ESNext for bundlers). You typically set target to match your runtime environment and module to match your build tool.
Should I enable strict mode?
Yes. Strict mode enables all type-checking options (strictNullChecks, noImplicitAny, etc.) and is recommended for all TypeScript projects. It catches more bugs at compile time and improves code quality. New projects should always enable strict mode.
What are path aliases and how do I use them?
Path aliases let you define custom module import paths like import Foo from '@components/Foo' instead of relative paths. Enter them in the format @/* -> ./src/*. You'll also need to configure your bundler (Webpack, Vite, Turbopack) to resolve the same aliases.
Is my data stored?
No. Everything runs entirely in your browser. Your data is never sent to any server.
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