OmniJSON

Dedicated MV3 JSON viewer with offscreen streaming parse and WASM acceleration.

OmniJSON is a high-performance JSON viewer and analyzer for Chrome, built for large API responses, logs, configuration files, exports, and deeply nested JSON documents. Instead of loading the entire JSON document into the page and blocking the browser, OmniJSON uses a dedicated extension viewer, background streaming, Web Worker processing, and Rust/WASM parsing to keep the UI responsive while data is still being read. Key features: • Open raw JSON responses in a dedicated viewer • Stream and parse large JSON documents progressively • Browse deeply nested data with a virtualized tree view • Expand and collapse objects and arrays without rendering the whole document • Search keys and scalar values with a fast keyword filter • Run JSONPath queries after parsing completes • Click any node to inspect and copy its path • Copy paths in useful formats such as JSONPath, JavaScript path, jq path, and key path • Preview long strings, URLs, timestamps, escaped JSON strings, and large numbers • View parsing and loading status for better performance visibility OmniJSON is designed for developers, QA engineers, data engineers, SREs, and anyone who regularly inspects JSON in the browser. Typical use cases include: • Debugging API responses • Inspecting webhook payloads • Exploring exported JSON data • Reviewing large logs or nested objects • Finding specific fields, IDs, errors, or status values • Copying exact paths for code, tests, documentation, or jq queries OmniJSON works best with raw JSON documents served over HTTP/HTTPS or opened as local JSON files. For very large documents, it prioritizes responsiveness and progressive browsing so you can start inspecting data before the full document has finished parsing