Guide to the web code playground with 53 runtimes, 10 editor themes, 45 keyboard commands, Vim mode, Emmet support, AI code assistance, and instant sharing.
Last updated: July 29, 2026
Select from 53 runtimes including JavaScript, TypeScript, Python, Java, C++, Go, Rust, Ruby, PHP, Swift, Kotlin, C#, and many more. Each runtime comes with proper syntax highlighting, runtime-aware auto-completion, and appropriate formatting rules. The runtime selector is searchable for quick access.
Write code in a full-featured editor with syntax highlighting, intelligent auto-completion, bracket matching, line numbers, code folding, and find/replace.
Run supported snippets in the playground, review console output, format code, and create shareable links when you are ready to collaborate. Avoid putting secrets in shared snippets.
The Code Playground is a full-featured web IDE that lets you write, run, and share code in 53 runtimes without installing anything.
Whether you are prototyping a quick script, teaching a class, or debugging a snippet, the Code Playground gives you a zero-setup development environment accessible from any modern device.
JavaScript, TypeScript, Python, Java, C, C++, C#, Go, Rust, Ruby, PHP, Swift, Kotlin, Scala, Haskell, Lua, R, MATLAB, SQL, HTML, CSS, SCSS, Less, JSON, XML, YAML, TOML, Markdown, Shell/Bash, PowerShell, Perl, Dart, Elixir, Clojure, F#, Erlang, OCaml, Zig, Nim, Crystal, Julia, Groovy, Assembly, WGSL, Dockerfile, GraphQL, Protobuf, Solidity, Svelte, Vue, JSX, TSX, and GLSL. Each runtime includes tailored syntax highlighting, runtime-aware autocompletion, and formatting rules.
Choose from 10 carefully crafted themes designed for comfortable coding in any lighting condition. Themes affect editor colors, background, and UI elements.
Access all 45 editor commands from the integrated command palette. Key shortcuts include Ctrl+Enter (run), Ctrl+S (format), Ctrl+/ (toggle comments), Ctrl+H (find & replace), Ctrl+D (select next occurrence), Ctrl+L (select line), Ctrl+Shift+K (delete line), Alt+Up/Down (move line), and Ctrl+Shift+P (open palette). Every shortcut is also available from the menu for discoverability.
The output terminal displays console output, runtime errors, and execution results as you work. Standard output and standard error are color-coded for easy distinction.
Generate shareable links for collaboration, download code as files, and keep examples tidy with the file tools. Avoid sharing secrets or private credentials in snippets.
The integrated AI assistant panel offers inline code suggestions, explanations, and refactoring help. Use sample code when asking for help with private or sensitive projects.
Power users can enable Vim mode for full modal editing — Normal, Insert, Visual, and Visual Line modes with all standard motions (h/j/k/l, w/b/e, gg/G), operators (d/c/y), text objects (iw, i", a{), and Ex commands (:w, :q, :s). Emmet is also available for rapid HTML/CSS expansion with Tab-triggered abbreviations.
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