{ } jsonbloom

About jsonbloom

{ } jsonbloom is a free, browser-based JSON visualizer. You paste JSON and it draws the structure as an interactive graph you can pan, zoom, and edit — no install, no account, and no data ever sent to a server.

What is jsonbloom?

It is a focused tool for one job: making JSON easy to read. API responses, configuration files, webhook payloads, and logs are all JSON, and all of them get hard to follow as plain text once they grow. { } jsonbloom turns that text into a graph of color-coded nodes so you can understand the shape of the data at a glance, then edit values right in the view.

Why we built it

We kept reaching for a quick way to inspect a JSON payload without pasting it into a service that uploads the data somewhere. So we built a visualizer that does everything locally in the browser — fast enough for everyday use, private by default, and free. { } jsonbloom is the tool we wanted on hand whenever an unfamiliar JSON blob landed on the screen.

How it works

Everything runs client-side. When you paste JSON, your browser parses it and renders the graph locally; nothing is transmitted to or stored on a server. That means you can safely inspect sensitive payloads, and the tool keeps working even on a flaky connection after the page has loaded.

How to use it in 4 steps

  • 1 — Paste your JSON. Drop it into the editor on the left. If it is invalid, you get the line and column of the error.
  • 2 — Explore the structure. The graph is drawn on the right automatically; pan with the mouse and zoom with scroll.
  • 3 — Expand and collapse. Click nodes to hide branches you do not need and focus on the part you do.
  • 4 — Format and copy. Use the toolbar to format, minify, edit values inline, or copy the result back out.

For a fuller walkthrough, see the guide on how to visualize JSON.

Who it's for

Developers reading API responses, engineers comparing config files, QA and support teams digging through webhook and log payloads, and data analysts inspecting exported records — anyone who works with JSON and would rather see it than scroll through it.

Feedback & contact

Found a bug or have an idea? Head to the contact page — feedback directly shapes what gets built next.