Everything in the catalog

Edits OpenAPI definitions with live documentation preview and validation.

Reformats minified or messy JavaScript, HTML and CSS with indentation settings.

Creates a .gitignore file from templates for operating systems, IDEs and languages.

Disassembles an uploaded .wasm module into readable WebAssembly text.

Assembles WebAssembly text format to a binary module and runs the JavaScript harness.

Turns a curl command into equivalent request code in many programming languages.

Transform, prefix and minify CSS against chosen browser targets in the browser.

Describe an app idea and an open model generates a runnable code project with a preview.

Parses code with many language parsers and displays the syntax tree for exploring transforms.

Draws a JavaScript regular expression as a railroad-style diagram to help you read it.

Compares Amazon EC2 instance types by specs and price across regions.

Draw a user interface on a canvas and a vision model turns it into working HTML; uses your own API key.

Browser MQTT 5.0 client that connects over WebSocket to publish and subscribe to topics.

Shows what the compiler generates behind C++ features by expanding your code into explicit source.

Drag-and-drop section templates and a Markdown editor for assembling a project README.

Lints GitHub Actions workflow files in the browser using the WebAssembly build of actionlint.

Converts a docker run command into docker-compose YAML.

Renders PostgreSQL EXPLAIN output as an annotated tree so slow plan nodes stand out.

Generates realistic fake JSON that conforms to a JSON Schema.

Renders a unified git diff as side-by-side or line-by-line HTML with syntax highlighting.

Postgres running in the browser through PGlite, paired with an AI assistant for schemas, CSV imports and diagrams.

Draws a PostgreSQL EXPLAIN JSON plan as a tree with cost and time per node.

Minimal offline-first HTTP client for the web that organizes requests into collections.

Suggests postgresql.conf settings for given hardware, PostgreSQL version and workload type.