JSON Lens

A private JSON formatter, viewer and diff. Your data never leaves the browser.

JSON Lens is a private JSON formatter, tree viewer and workshop for Chrome. Paste JSON, drop a file, or send the current tab into a clean lab. Format, minify and validate with a line number. Walk a collapsible tree, search keys and values, and click any node to copy its JSONPath. Your documents are parsed on this device. They are not uploaded. • Auto-format is off until you turn it on. We do not ask to read every website just to install. • No ads, no injected scripts, no geolocation lookups, no telemetry. • The JavaScript is unminified. You can read every line. • Pro is a one-time $9 unlock, not a subscription. Free features • Format, minify, validate • Tree view, search, copy path, clickable URLs • Open this tab, a file, a drop, or a right-click selection • Dark and light themes • Keyboard command: Alt+Shift+J opens the lab Pro ($9 once) • JSONPath, including $..recursive and slices • Diff two documents • Convert to CSV, YAML, or TypeScript interfaces • Save named snippets locally Support: johnong726@gmail.com · https://lensworks-studio.pages.dev