Build JSON-RPC 2.0 request objects with method, params, and auto-generated ID. Everything runs locally in your browser — nothing is uploaded.
Build HTTP requests with custom method, URL, headers, and body. Generate equivalent curl commands. Everything runs locally in your browser — nothing is uploaded.
Generate a JSON Schema (draft-07) from sample JSON data. Auto-detect types, required fields, and nested structures.
Build and test SOAP API envelopes with WSDL URL, method name, and XML parameters. Generate complete SOAP request envelopes.
Bidirectional YAML to JSON and JSON to YAML conversion with auto-format detection and real-time preview. Perfect for configuration files, API payloads, and data migration.
Convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once. Everything runs locally in your browser — nothing is uploaded.
JSON-RPC Builder lets you build JSON-RPC 2.0 request objects with method, params, and auto-generated ID. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Build JSON-RPC 2.0 request objects with method, params, and auto-generated ID. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Configure your settings below — the output generates instantly.
Yes. After the initial page load, JSON-RPC Builder runs entirely on your device with no internet connection needed. All processing is done locally.
Build JSON-RPC 2.0 request objects with method, params, and auto-generated ID. All processing runs locally — no code is sent to any server.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check the tool description for specifics.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. Formatters use well-known libraries (sql-formatter, Prettier-compatible patterns) and follow widely adopted rules.
API Request Builder
Build HTTP requests with custom method, URL, headers, and body. Generate equivalent curl commands. Everything runs locally in your browser — nothing is uploaded.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.