A product of Lensworks Studio

JSON Lens

A private formatter, tree viewer and workshop for software developers. Format, search and explore JSON on your own device. There is no account, no ads, and no telemetry. Pro is a one-time US$9 unlock — not a subscription.

See pricing Privacy policy Coming soon to the Chrome Web Store

The JSON Lens lab showing a formatted JSON tree, a valid badge, and a JSONPath on the status bar — The JSON Lens lab: format, validate and walk a collapsible tree on your machine.

What it does

JSON Lens is a Chrome extension (Manifest V3). Your documents are parsed in the browser. They are not uploaded to Lensworks Studio.

Format and inspect

Format, minify and validate with a line number. Walk a collapsible tree, search keys and values, click a node to copy its path, and open clickable URLs.

Works from where you are

Paste JSON, drop a file, send the current tab into the lab, or right-click a selection. Alt+Shift+J opens the lab. Dark and light themes are included.

Permission-light

Auto-format is off until you turn it on. The extension does not ask to read every website just to install. “Format this tab” only runs when you click it.

Readable source

The JavaScript is unminified, so you can open the extension folder and read every line. Nothing phones home, and we will never inject prompts into a checkout page.

Pricing

Start for free. Unlock Pro once, for US$9. There is no subscription and no recurring charge.

Free

US$0

Already useful as a daily formatter.

Format, minify and validate
Collapsible tree, search, and click-to-copy path
Clickable URLs, file drop, and “open this tab”
Dark and light themes

JSON Lens Pro

US$9 once

A one-time digital licence, paid online through Stripe. A signed licence key unlocks Pro in the extension.

Everything in Free
JSONPath queries, including $..recursive and slices
Two-pane diff of two documents
Export to CSV, YAML, or TypeScript interfaces
Named snippets saved locally on this browser

No physical goods are shipped. Refunds are available for 14 days on request — see the terms of sale.

JSON Lens Pro two-pane diff comparing two JSON documents — Pro: a two-pane diff of two JSON documents, running locally in the lab.

About Lensworks Studio

Lensworks Studio is a software publisher operated by John Ong in Western Australia. It sells JSON Lens, a browser extension for software developers. Customers who want Pro features pay a one-time US$9 fee online. The licence is delivered instantly as a digital licence key. There are no physical shipments and no subscription.

The Chrome Web Store listing is being prepared and is not live yet. This website is the official business site for Lensworks Studio and for JSON Lens.