Everything in the catalog

Builds a ready-to-copy curl call from form fields for verb, headers and an optional JSON payload.

Write database schemas in DBML, see a live ER diagram, and export CREATE TABLE SQL for PostgreSQL, MySQL and others.

Reads a workflow file and describes in everyday words what triggers it, which jobs run and what permissions it asks for.

Try GraphQL queries and learn the language with built-in examples.

Beautifies HTML markup with consistent indentation.

Turns HTML into a React component, renaming class to className and similar attributes.

Beautifies JavaScript code with consistent indentation.

Try jq filters against sample JSON and share the results.

Compares two JSON documents side by side, with options to ignore chosen fields.

Beautifies pasted or loaded JSON with no popups or sign-up.

Validates JSON against a JSON Schema and reports the failing path, rule and message.

Infers a JSON Schema describing the field types of a JSON sample.

Infers TypeScript interfaces from JSON, marking optional fields and unions by merging array items.

Infers Zod schemas from JSON, including optional and nullable fields.

Shows JSON as a collapsible tree.

Evaluates JSONPath expressions against a JSON document.

Press a key to read its key name, physical code and legacy numeric keyCode, plus Shift, Ctrl, Alt and Meta state.

Beautifies SQL statements loaded or pasted into the page.

Formats Java, Python, JavaScript and Go stack traces with automatic language detection.

Turns SVG markup into a typed React component.

Creates identifiers in several UUID versions, from random v4 to time-ordered v7 and name-based v3 and v5.

Runs XPath expressions against XML and shows the matched nodes.

Collection of web developer tools such as an aspect ratio calculator, color picker and formatter.

Validates JSON against a schema and can generate a schema from sample data.