Design 064 - Playground Casebench IDE

Current Playground

Unsaved Playground

Temporary runtime. Refresh or close discards it until saved.

WP latest PHP 8.3 Lang en_US Net allowed

Reproduction flow

Source selected Gutenberg PR or branch: trunk/issue-61234
Save destination Browser storage selected; local directory remains a separate target.
Copy progress 3028 / 3751 files copied before saved URL becomes available.
Resulting identity Saved as research-browser-playground, created May 21, 2026.
Risk checkpoint Reset, reload, delete, and import-over-current actions show warnings.

Persistence

Current-site consequences

Applying runtime settings resets an unsaved Playground. Running a Blueprint or importing a zip over this site can replace files and database content.

File and data workbench

Open the artifact that explains the bug

Selected artifact

File browser

Editable

1 <?php define( 'CONCATENATE_SCRIPTS', false );
2 /** WordPress base configuration. */
3 define( 'DB_NAME', 'database_name_here' );
4 define( 'DB_USER', 'username_here' );
5 define( 'DB_PASSWORD', 'password_here' );
6 define( 'DB_HOST', 'localhost' );
7 define( 'DB_CHARSET', 'utf8mb4' );

Blueprint workspace

/blueprint.json

Runnable

{
  "$schema": "https://playground.wordpress.net/blueprint-schema.json",
  "meta": {
    "title": "Playground Welcome Page",
    "author": "fellyph"
  },
  "login": true,
  "landingPage": "/hello-from-playground/",
  "preferredVersions": {
    "php": "8.3",
    "wp": "latest"
  }
}

Running this bundle replays setup steps against the current site. Confirm before replacing current files or content.

Database

SQLite-backed WordPress data

452 KB

Early access database management

WordPress Playground emulates MySQL using SQLite. Database tools are improving and should be used carefully when reproducing bugs.

Database driver: MySQL emulation backed by SQLite
SQLite database path: /wordpress/wp-content/database/.ht.sqlite
Size: 452 KB

Diagnostics

Logs

No problems

No problems so far.

Runtime errors, WordPress notices, and PHP messages appear here when the case fails.

[playground] boot complete
[wordpress] admin user signed in
[php] no warnings captured

Runtime settings

Reset or reload environment

Destructive

WordPress Version PHP Version Language Include older versions Allow network access Create a multisite network

Unsaved Playground: Apply Settings & Reset replaces the current WordPress site. Stored Playground: Save & Reload keeps the saved identity but reloads runtime settings.

Live preview

Hello from WordPress Playground

Route active

/hello-from-playground/

Hello from WordPress Playground!

This is Playground, a WordPress that runs client-side in your browser.

Note that you are logged-in as admin!

Launch source selection

New or imported Playground

6 routes

Vanilla WordPress

Starts immediately with latest WordPress and current runtime settings.

WordPress PR

PR number or URL

Gutenberg PR or branch

PR number, URL, or branch name

From GitHub

Imports a public plugin, theme, or wp-content directory after connecting an account. Access token is not stored and re-authentication is required after refresh.

Blueprint URL

Import .zip

Opens the native file chooser. Importing over the current site can replace files and database content.

Save Playground

Persist temporary runtime

Unsaved

Playground name

Save in this browserStored in browser storage and opened by a site-slug URL. Save to a local directorySelect a folder on this device; useful for local handoff and reloads.

Saving 3028 / 3751 filesCopying wp-content uploads and generated WordPress files.

Result

Shell title becomes Saved Playground, URL uses /research-browser-playground/, and the saved item appears in Saved Playgrounds.

Saved Playgrounds

Manage browser-backed sites

2 entries

Unsaved PlaygroundNot saved to browser storage

Research Browser PlaygroundCreated May 21, 2026

Selected site actions

Rename Playground

Deleting removes this browser-backed Playground from the saved list. It does not delete the current unsaved runtime until you switch away or reload.

Blueprint gallery

Catalog browser

43 indexed

Selected Blueprint

Art Gallery

An art gallery created with the Vueo theme.

Showing 1-24 of 43 entries

Art Gallery, Coffee Shop, Feed Reader with the Friends Plugin, Gaming News, Non-profit Organization, Personal Blog, Block Theme Starter, Data Views Demo, Interactivity API Counter, Woo Product Grid, Headless Preview, Pattern Directory, Magazine Layout, Plugin Sandbox, REST API Demo, Multisite Sample, Classic Theme Lab, Translation Test, Media Library Demo, Forms Workflow, Newsroom Blocks, Portfolio Blocks, Commerce Checkout, Theme Variations

Export and package

Hand off the reproduction

Artifacts

Export to GitHub

Send the current Playground files to a GitHub repository after account connection.

Download as .zip

Download a complete Playground bundle for import on another browser or machine.

Blueprint bundle

Copy a link or download the current Blueprint assets from the Blueprint editor.

Database snapshot

Download database.sqlite from the Database drawer.