JSONOVA - JSON Formatter and Viewer

Displays and formats JSON directly in the current tab.

⚡️ JSONOVA ⚡️ is a free Chrome extension for anyone who works with JSON every day and wants a faster, cleaner way to inspect structured data directly in the browser. Open a JSON response and JSONOVA turns it into a readable, interactive workspace with fast navigation, folding controls, global search, and a polished interface designed for heavy API workflows. 😍 Why JSONOVA 😍 1️⃣ Very fast with large JSON files JSONOVA is built to stay responsive on heavy payloads and deeply nested documents, so you can inspect data without the browser feeling overloaded. 2️⃣ Works with local JSON files Open `file://` JSON files directly in Chrome and inspect them without uploading, converting, or switching to another tool. 3️⃣ Handles big numbers in JSON JSONOVA is well suited for JSON payloads containing large numeric values and keeps them easy to inspect in a structured view. 4️⃣ Low memory usage on big files The viewer is designed to keep memory usage lean, even when the JSON file is large or deeply nested. 5️⃣ Global search and tree navigation Find values quickly, move through nested structures, and collapse or expand branches when you need a clearer view of the data. 6️⃣ Dark, light, and system theme support Match the extension to your browser or operating system theme, or choose a fixed appearance that fits your workflow. 7️⃣ Unique CSS customization JSONOVA lets you customize the output styling with your own CSS, which makes the viewer flexible for advanced personal setups. ✨ Everyday Features - RAW and formatted view switching - Expand all and collapse all controls - Copy to clipboard - Download JSON with a generated filename - Line numbers and structure settings - Automatic saving of preferences - In-page viewing without switching to a separate app 🔥 Built for Real Work JSONOVA is a practical tool for developers, QA engineers, API consumers, and anyone who needs to inspect JSON responses quickly and repeatedly. It is especially useful when you want a no-friction workflow for: - API debugging - response inspection - large payload review - local JSON analysis - structured data navigation json viewer, json formatter, json tree viewer, chrome json viewer, local json viewer, large json viewer, api response viewer, json search, json pretty print, dark mode json viewer, css customizable json viewer, free json extension