Hi PH! I'm Waqar, the maker of UniPreview. I kept needing a quick way to see what a snippet renders to without setting up a project, and most playgrounds only cover HTML/CSS/JS. So I built a paste-and-preview tool that handles 23 languages and formats in one place, including React JSX/TSX, Vue, Svelte, PHP and Python (running in the browser via WebAssembly), Markdown, SCSS and more. What's in it: - Live preview, no run button - Device preview (mobile, tablet, desktop) - Share by URL or QR code - Free, no account Dart/Flutter and Angular open in their official playgrounds (DartPad, StackBlitz), so those go to third-party services. It's not a full IDE, just the fastest way to check what code looks like. I'd love to hear which language or feature you'd want next.

UniPreview

Paste code, see the preview instantly. 23 languages, free

Paste code, see the preview instantly. 23 languages, free