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Release History

What's new

Every feature shipped, every bug fixed, every improvement made — explore the complete history of how the product has evolved.

Latest version: v0.4.04 releases23+ changes shippedUpdated May 20, 2026
v0.4.0May 20, 2026

TypeScript Intelligence & LSP

Full TypeScript Language Server Protocol support inside the browser. Real-time type checking, hover docs, and go-to-definition — all powered by a Web Worker-based LSP client.

✨New Features

  • —TypeScript LSP: Integrated a full TypeScript language server into a dedicated Web Worker. Supports diagnostics, hover types, completions, and inlay hints.
  • —Go-to-Definition: CMD+Click (or CTRL+Click on Windows/Linux) on any symbol to jump to its definition, even across module boundaries.
  • —Inlay Hints: Toggle TypeScript inlay hints from the editor toolbar. Shows parameter names and return type annotations inline.

💎Improvements

  • —LSP Prewarming: The TypeScript Worker now starts as soon as the workspace loads instead of waiting for the first keystroke. First-edit latency dropped from 340ms to 18ms.
  • —CodeMirror 6 Upgrade: Upgraded to the latest CodeMirror 6 release. Improved rendering performance and fixed edge cases with large files.

🐛Bug Fixes

  • —Bracket Matching: Fixed an issue where bracket matching would incorrectly highlight brackets inside string literals.
v0.3.0April 8, 2026

Git Integration

Real Git workflows in the browser. Commit, branch, and push directly from WebSandbox using isomorphic-git running entirely client-side.

✨New Features

  • —Git Commit & Branch: Full git commit and branch management via the new Source Control panel. Commit messages, staged files, and diff views included.
  • —GitHub Integration: Connect your GitHub account to push and pull from remote repositories. Uses OAuth with a scoped token stored only in your browser.
  • —File Diff Viewer: Click any modified file in the Source Control panel to see a side-by-side diff with syntax highlighting.

💎Improvements

  • —File Tree Performance: Replaced flat list rendering with a virtualized list using @tanstack/virtual. Handles projects with 10,000+ files without jank.

🔒Security

  • —Token Storage: GitHub tokens are now stored in an encrypted format in IndexedDB. Tokens never leave the browser.
v0.2.0March 1, 2026

Persistent Workspaces & Multi-Tab

Your work now survives a page refresh. Workspaces are synced to our backend and can be shared via URL. Multi-tab support lets you work on multiple projects simultaneously.

✨New Features

  • —Persistent Workspaces: Workspaces are now saved automatically to the backend. Refresh the page and your files, terminal history, and editor state are all preserved.
  • —Shareable URLs: Every workspace gets a unique URL. Share it with a colleague and they'll get their own independent copy to experiment with.
  • —Workspace Snapshots: Create named snapshots of your workspace at any point. Roll back to a snapshot with one click.

💎Improvements

  • —WebContainer Boot Time: Aggressively cache the WebContainer WASM binary using Cache Storage. Repeat boot time reduced from 2.1s to 0.6s.

⚡Performance

  • —Bundle Splitting: Separated the editor bundle from the marketing site bundle. LCP on the home page reduced from 3.8s to 1.2s.

🐛Bug Fixes

  • —Terminal Resize: Fixed a bug where resizing the terminal panel would cause the xterm.js instance to render incorrectly.
v0.1.0January 15, 2026

Initial Launch 🎉

The very first public release of WebSandbox. A browser-native IDE powered by WebContainers with a code editor, integrated terminal, and live preview panel.

✨New Features

  • —WebContainer Runtime: Boot a full Node.js environment inside the browser tab in under 2 seconds. No server required.
  • —Code Editor: CodeMirror 6-based editor with syntax highlighting for JavaScript, TypeScript, CSS, HTML, JSON, Markdown, and more.
  • —Integrated Terminal: xterm.js terminal connected to the WebContainer shell process. Run npm, node, git, and any CLI tool that works in Node.
  • —Live Preview: Split-panel live preview that automatically reloads when your dev server's port becomes available.
  • —File Tree: Full file system browser with create, rename, delete, and drag-and-drop support.
  • —Dark & Light Mode: First-class dark mode with system preference detection. Switch themes without a page reload.
WebSandbox

A real development environment. Entirely in your browser. Boot instant workspaces with WebContainers, or scale up with dedicated VS Code Servers.

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