NodalJSON – Fast and Beautiful JSON viewer and formatter

A fast, beautiful JSON viewer with tree navigation, JSONC support, color swatches, epoch hints, and smart copy actions.

NodalJSON transforms raw JSON responses into a beautifully formatted, interactive tree — right in your browser tab. No copy-pasting into external tools, no context switching. Made by developers handling JSON files every day, this extension offers advanced features like on other. Read on to learn about the features, or click install to find out on your own! FEATURES • Interactive tree view — expand and collapse any node with a click • JSONC support — parses single-line (//) and multi-line (/* */) comments natively • Smart copy actions — hover any row to instantly copy its value, key, key:value pair, or full dot-notation path • Color swatches — renders a live color preview next to any HEX or RGB string • Epoch timestamp hints — automatically converts Unix timestamps to human-readable dates inline • Stringified JSON parsing — detects embedded JSON strings and lets you expand them in place • Raw view toggle — switch between the interactive tree and the original plain text instantly • Viewport navigation — skip-to-next and scroll-to-start helpers for massive files • Dark / Light / System theme — follows your OS or pick manually • Custom fonts — choose from several monospace options • Configurable hover actions — choose exactly which copy buttons appear per row • JSONL / NDJSON support — renders newline-delimited JSON streams line by line • Seamless select/copy/paste — the things you don't notice, are the things that work well because they've been well thought through while making this extension. • Download button — save the formatted JSON directly to disk • Paste your own JSON — click on the extension followed by the "Paste Your Own JSON" button, to type or paste your JSON from the clipboard to render it! Works automatically on any URL returning JSON — API endpoints, local files, and more! Note: to enable this extension on local files, enable "Allow access to file URLs" from the Extension Settings page.