Quick Summary
JSON Online Viewer is a 100% client-side web utility for parsing, formatting, inspecting interactive tree nodes, unescaping strings, and converting JSON payloads into YAML directly inside your browser memory.
JSON Online Viewer, Tree Formatter & YAML Converter
Parse, format, minify, unescape, convert to YAML, and inspect JSON payloads with zero server uploads.
Interactive Tree Mode
Expand and collapse deeply nested object hierarchies and array nodes seamlessly with single-click key/value copying.
JSON to YAML Converter
Convert structured JSON data into clean YAML configurations for Docker, Kubernetes, and OpenAPI specs.
JSON Unescaper
Automatically fix and unescape stringified JSON payloads containing escaped quotes and slashes.
Frequently Asked Questions (FAQ)
What is a JSON Online Viewer?
A JSON Online Viewer is a browser-based developer tool used to parse, format, minify, and inspect JSON (JavaScript Object Notation) data structures visually.
Is my JSON data kept private?
Yes. OnlineViewer Dev runs 100% locally in your browser memory. Your JSON payload is never transmitted to any external backend server or logged remotely.
How do I convert JSON to YAML?
Paste your JSON code into the editor and click the 'JSON to YAML' button (or press Alt+5) to convert your JSON structure into clean YAML syntax instantly.