# JSON Viewer

> JSON viewer, formatter and validator with collapsible tree, prettify and minify.

Canonical page: [https://chrome-stats.com/d/com.tooltoolnam.json\_viewer](https://chrome-stats.com/d/com.tooltoolnam.json_viewer)

## Overview

- **ID:** `com.tooltoolnam.json_viewer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** ToolToolNam
- **Category:** TOOLS
- **Downloads:** 41
- **Version:** 1.0.3
- **Last updated:** 2026-08-28
- **First published:** 2026-05-29
- **Publisher country:** KR
- **Size:** 21 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.tooltoolnam.json_viewer)
- **Website:** [https://tooltoolnam.github.io/](https://tooltoolnam.github.io/)
- **Privacy policy:** [https://tooltoolnam.github.io/tooltoolnam-privacy/privacy-policy.html](https://tooltoolnam.github.io/tooltoolnam-privacy/privacy-policy.html)

## Description

JSON Viewer is a clean, offline developer tool that turns raw JSON into a collapsible tree you can actually read. Paste a payload, format it, validate it, and walk through it node by node — no login, no upload, no clutter.<br><br>Whether you are debugging an API response, inspecting a config file, or cleaning up a messy log dump, JSON Viewer gives you the parser, formatter, and tree explorer in one focused screen.<br><br>KEY FEATURES<br>• Tree view with collapse and expand at every level<br>• Syntax highlighting (keys blue, strings green, numbers orange, null and booleans red)<br>• Prettify with 2 or 4 space indent<br>• Minify to a single compact line<br>• Validate JSON with clear, line-aware error messages<br>• Paste from clipboard and copy results with one tap<br>• Adjustable font size from 10 to 24 pt<br>• Dark mode plus automatic system theme follow<br>• 37 languages with full RTL support for Arabic<br>• 100% offline, no account, no tracking, no analytics<br><br>WHO IT IS FOR<br>• Backend, frontend and full-stack developers<br>• Mobile engineers working with Android, iOS, Flutter, or React Native<br>• API integrators debugging REST and GraphQL responses<br>• Data analysts cleaning JSON exports and datasets<br>• DevOps and SRE engineers reading configs and structured logs<br><br>WHY THIS ONE<br>Privacy first. Every byte of JSON you paste stays on your device. Nothing is uploaded to a server, nothing is shared, nothing is logged.<br><br>No bloat. This is not a 50 MB IDE pretending to be a viewer. It launches fast, does JSON well, and stays out of your way.<br><br>Truly multilingual. The interface ships in 37 hand-localized languages, not machine-translated fragments, so the tool feels native wherever you work.<br><br>Supported by a single small banner ad to keep development sustainable. No paywall, no subscription, no upsell popups.<br><br>TYPICAL USE CASES<br>• Inspecting Stripe and PayPal webhook payloads<br>• Reading Firebase Remote Config and Firestore exports<br>• Debugging GraphQL and REST API responses<br>• Formatting messy server log JSON into something readable<br>• Reading package.json, tsconfig.json, and other project configs<br><br>Works with JSON from APIs, config files, package.json, tsconfig, Firebase, Stripe, GitHub, and any REST or GraphQL endpoint.<br><br>Install JSON Viewer and keep a proper JSON formatter, validator and tree explorer in your pocket.

## Rankings

- #2,325,820 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.tooltoolnam.json_viewer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.tooltoolnam.json_viewer)