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Browser code editor

Edit HTML, CSS, JavaScript, JSON, and XML with live preview, format, autosave, drag & drop, and download. Everything stays on your device.

Editor
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About this editor

A lightweight playground for quick snippets and page mocks. HTML previews render in a sandboxed iframe. JSON/CSS/JS/XML show a formatted text preview. Content autosaves to localStorage on this device only.

Tip: drag a file onto the window to load it. Use Format for JSON / basic HTML formatting.