A field notebook for code

Wrenna

The fastest bridge between
code and the browser.

Paste code, drop a file, or import a repo — see it rendered live in seconds. No npm install, no build servers, no signup.

Start Coding How it works

Free to use. Works on any device. Even that old laptop.

01 Why Wrenna

Zero to live in seconds

No npm install. No build servers. No configuration files. Paste your code and watch it render instantly.

Runs where you are

Built for low-spec hardware and mobile phones. If it can run a browser, it can run Wrenna. No GPU-hungry effects.

Your code, your browser

Everything runs locally in your browser. No uploads to unknown servers. No accounts required. Your code never leaves your device.

02 How it works

1

Paste your code

Drop in HTML, CSS, JavaScript, or import an entire GitHub repository. Wrenna auto-detects the project type.

2

Watch it render

See your code come alive in a real browser preview. Test on desktop, tablet, and mobile viewports with spec-accurate device frames.

3

Share with a link

Generate a shareable URL that encodes your entire project. Send it to anyone — they see exactly what you see.

03 Built for the way you code

Using AI tools to generate code? Wrenna is your instant preview layer.

v0 Bolt Lovable Cursor Claude ChatGPT + any AI coder

Ready to see your code come alive?

No signup. No setup. Just paste and go.

Start Coding