4all.tools

Convert flat JSON rows to a documented PostgreSQL or SQLite SQL subset, or import supported CREATE TABLE and INSERT literals as JSON.

Convert JSON to XML or XML to JSON in your browser. Work with attributes and repeated elements, and check what changes during conversion.

Convert strict JSON to YAML or a JSON-compatible YAML subset to JSON, preserving member order and numeric spelling in your browser.

Compare two strict JSON documents by value. Review added, removed, and changed values with localized diagnostics and bounded previews.

Turn nested JSON into a map of paths and values, or rebuild the original structure from a map. Process files locally in your browser.

Format, beautify, and validate JSON online. Detect syntax errors and make JSON data easier to read.

Convert JSONC comments and trailing commas to strict JSON, or attempt a bounded heuristic repair and review every text change.

Generate a JSON Schema from your examples. Review which fields are required, check the samples and download the schema.

Check a strict JSON document against a local, explicitly limited subset of JSON Schema draft-07.

Find literal text in strict JSON keys and primitive values, then copy the path or locate the original value in your browser.

Measure JSON size in UTF-8 bytes, compare the savings from minification and inspect its values, arrays and depth.

Sort strict JSON keys ascending or descending, recursively or at the root, while preserving arrays and original numeric tokens locally.

Turn a JSON array of objects into a table. Choose columns and rows, then copy or download the Markdown for your documentation.

Infer C# classes locally with exact JSON property names, JsonRequired presence and explicit nullable and raw-number capabilities.

Convert arrays of JSON objects to CSV or inspect CSV headers and convert rows to JSON, with explicit type and irregular-row choices.

Infer Go structs and raw maps locally, preserve lexical numbers with json.Number and explain optional pointer capabilities.

Infer Python TypedDict declarations locally, preserve exact dictionary keys and separate absent fields from None.

Infer TypeScript types from complete JSON documents, preserve literal keys and distinguish missing fields from null locally.

Explore strict JSON as a bounded, expandable tree. Inspect value types, browse large arrays in pages, and copy a selected JSON path while your input stays in your browser.

Search a strict JSON document with a supported JSONPath query, inspect matching paths and previews, and copy a selected path or value in your browser.