# callumlocke/json-formatter

Makes JSON easy to read.

Repository: https://github.com/callumlocke/json-formatter
Canonical: https://ross.abutalabs.com/products/json-formatter
Language: TypeScript
License: BSD-3-Clause
License Family: permissive
Last push: 2026-02-26T16:33:51+00:00

## Health v2 (maintenance only)
Score: 68/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 69, release rhythm 48, longevity 100
- inputs: {"age_days": 5141, "days_push": 188, "days_rel": 348, "gap_med": 0, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4128, forks 955 (observed 2026-08-28T04:08:36.056674+00:00)

## What it is
A Chrome browser extension that formats and pretty-prints JSON API responses with syntax highlighting, collapsible trees, dark mode, and console access to parsed data. The open-source project is archived, with a final 'JSON Formatter Classic' version available for use or fork.

## Use cases
- read json api responses in chrome
- pretty print json in browser
- explore json endpoints with collapsible tree
- debug rest api responses
- inspect json in devtools console
- view large json files fast

## When to choose
- you need a lightweight, local-only JSON viewer in Chrome
- you want an open-source extension you can fork and maintain yourself
- you frequently browse JSON API endpoints and want syntax highlighting and collapsible trees

## When to avoid
- you need ongoing updates or support - the project is archived
- you want a comprehensive API-browsing tool with premium features
- you need accurate display of integers beyond JavaScript's safe number range

## Facets
- artifact type: plugin
- maturity: maintenance
- function: json, developer-tools, browser-extension
- domain: developer-tools, web-development, apis
- platform: browser, browser-extension
- tags: json-viewer, chrome-extension, syntax-highlighting, api-debugging, archived

## Member repositories
- callumlocke/json-formatter (main) score 68

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:36.056674+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 2026-08-29T18:23:03.875195+00:00, confidence not recorded.
  - readme: https://github.com/callumlocke/json-formatter (fetched 2026-08-28T04:08:36.056674+00:00, sha ad12dec99ebf)
- Data as of 2026-08-30T08:39:29.467469+00:00.