Download Deno JavaScript Runtime for Windows PC v2.9.8 for Windows PC
Deno is the secure JavaScript/TypeScript runtime from the creator of Node.js — TypeScript runs natively, permissions are explicit, and the formatter, linter...
Technical Specifications & System Requirements
Software notes
Features
- Native TypeScript with no build step, config files, or transpiler — deno run file.ts just works, with full type checking built in.
- Secure by default: file, network, and environment access require explicit permission flags, a real defense for scripts and tooling.
- Complete built-in toolchain — formatter, linter, test runner, bundler, and deno compile for standalone executables — in a single small binary.
- Deno 2 runs Node.js code and npm packages, so most existing projects migrate without a rewrite, and workspaces are supported.
- Modern web-standard APIs (fetch, WebSocket, streams) work the same on the server as in the browser, reducing API déjà vu.
Considerations
- A minority of npm packages with deep Node-specific or native-addon assumptions still misbehave; large legacy Node codebases need testing before switching.
- The ecosystem's tutorials, hosting guides, and corporate standards still default to Node, so you will occasionally translate instructions.
- Permission flags add friction during rapid prototyping — you will grant -A locally more often than the security model ideally wants.
About & Overview: Deno JavaScript Runtime for Windows PC
Deno is a modern, secure runtime for JavaScript and TypeScript built on V8 and Rust by Ryan Dahl, the original creator of Node.js. It executes TypeScript natively with no build step or tsconfig ceremony, ships a complete toolchain in one binary — formatter, linter, test runner, compiler, and package management — and is secure by default: scripts cannot touch the file system, network, or environment unless you grant explicit permission flags. Deno 2.x adds full Node.js and npm compatibility, so existing packages and even whole Node projects run under it, plus a standard library, workspaces, and the JSR package registry. This download is the official Windows x64 build from the Deno GitHub releases.
How to Install & Verify Deno JavaScript Runtime for Windows PC
Download Deno from the official GitHub link on this page and extract deno.exe to a folder on your PATH (e.g. C:\Tools\deno).
Open a terminal and run deno --version. Then try a script: deno run main.ts — TypeScript works with no extra setup.
Deno asks for nothing by default. Add flags only for what your script needs: --allow-net for network, --allow-read for files, or -A for everything in trusted local scripts.
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Frequently Asked Questions & Verification Guide
Is Deno free?
Yes — Deno is open source under the MIT license. The runtime and toolchain are completely free; Deno Land sells optional cloud hosting (Deno Deploy) separately.
Can Deno run my Node.js project?
Usually, yes. Deno 2.x supports npm packages, package.json, and Node's built-in modules, and adds workspaces. Projects relying on exotic native addons are the main exception — test before committing.
Do I still need to install TypeScript separately?
No. TypeScript support is built into the runtime. Deno type-checks and executes .ts files directly with no tsconfig or build step required.
How do I install Deno on Windows?
Download the ZIP from this page's official GitHub link, extract deno.exe to any folder, add that folder to your PATH, and run deno --version to confirm.
Why does Deno keep asking for permissions?
That is its security model: scripts start with no access. Grant exactly what is needed (--allow-net, --allow-read=./data) or use -A for scripts you fully trust.