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Json Viewer

Pretty-print JSON.

What is the Json Viewer?

The Json Viewer is a free online json tools from Markvibe. Pretty-print JSON. It runs entirely in your browser — your data never gets uploaded — and works on desktop, tablet and mobile with no sign-up.

Reviewed by The Markvibe Team · Last updated 2026-06-28

Example

A worked example so you know exactly what to expect.

Input
(your input goes here)
Output
(the Json Viewer runs in your browser and shows the result instantly)

How to use Json Viewer

  1. 1Open the Json Viewer on this page — it loads instantly with no sign-up.
  2. 2Paste or enter your input into the field above. You can paste, type, drag-and-drop, or upload depending on the tool.
  3. 3Set any options (format, size, mode) to match exactly what you need.
  4. 4Click the run button to run Json Viewer in your browser.
  5. 5Review the result, then copy it to your clipboard or download the output file.

Why use our Json Viewer

  • ✓ 100% free Json Viewer — no sign-up, no watermark, no hidden limits
  • ✓ Runs entirely in your browser so your data never leaves your device
  • ✓ Blazing-fast results — built for speed by Markvibe
  • ✓ Mobile-friendly: use Json Viewer on phone, tablet, or desktop
  • ✓ One of 184+ json tools utilities under one roof
  • ✓ Privacy-first: no tracking of inputs, no accounts, no ads in the tool area

Json Viewer — frequently asked questions

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