# tulios/json-viewer

It is a Chrome extension for printing JSON and JSONP.

Repository: https://github.com/tulios/json-viewer
Canonical: https://ross.abutalabs.com/products/json-viewer
Homepage: https://chrome.google.com/webstore/detail/json-viewer/gbmdgpbipfallnflgajpaliibnhdgobh
Language: HTML
License: MIT
License Family: permissive
Topics: json-viewer, chrome, jsonp, chrome-extension, javascript, json, highlighter
Last push: 2024-08-20T05:45:16+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4744, "days_push": 743, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3455, forks 726 (observed 2026-08-28T04:08:05.486667+00:00)

## What it is
A Chrome browser extension that pretty-prints and syntax-highlights JSON and JSONP responses directly in the browser. It offers 27 themes, collapsible nodes, clickable URLs, line numbers, sorting, and a scratch pad for formatting pasted JSON.

## Use cases
- view formatted json in chrome
- highlight json api responses in browser
- pretty print jsonp
- collapse and expand json nodes
- paste json and format it in a scratch pad
- read large json files in the browser

## When to choose
- you frequently inspect JSON APIs in Chrome and want automatic highlighting
- you need themes, collapsible trees, or line numbers for JSON
- you want to format pasted JSON via an omnibox scratch pad

## When to avoid
- you use Firefox or a non-Chromium browser
- you already run another JSON highlighter that may conflict
- you need programmatic JSON parsing rather than viewing

## Facets
- artifact type: plugin
- maturity: active
- function: json, developer-tools, browser-extension
- domain: developer-tools, web-development, apis
- platform: browser, browser-extension
- tags: json-viewer, syntax-highlighting, jsonp, chrome-extension, json-formatter

## Member repositories
- tulios/json-viewer (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:05.486667+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:37:30.952498+00:00, confidence not recorded.
  - readme: https://github.com/tulios/json-viewer (fetched 2026-08-28T04:08:05.486667+00:00, sha c047286c4b49)
  - homepage: https://chrome.google.com/webstore/detail/json-viewer/gbmdgpbipfallnflgajpaliibnhdgobh (fetched 2026-08-29T09:31:07.419348+00:00, sha fe43a8b87f7d)
- Data as of 2026-08-30T08:39:29.467469+00:00.