JSON Formatter Pro
Extension Actions
Auto-format and validate JSON & API responses instantly. Syntax highlighting, tree view, dark mode. Data never leaves your browser.
JSON Formatter Pro - JSON Viewer, Beautifier, Validator, Tree View & Editor. The most powerful JSON tool for Chrome.
Stop pasting sensitive API responses into online JSON formatters. JSON Formatter Pro runs 100% locally - your data never leaves your browser. No servers, no tracking, no risk.
KEY FEATURES
Format & Beautify - Transform minified JSON into clean, indented, syntax-highlighted code. Customizable 2/4/8 space indent.
Validate & Debug - Pinpoint JSON syntax errors with exact line numbers. Catch missing brackets, trailing commas instantly.
Tree View Explorer - Navigate deeply nested JSON with collapsible, interactive tree. Expand/collapse nodes visually.
Minify - Compress JSON payloads for APIs and config files. One-click production-ready output.
Auto-Paste - Detects JSON in clipboard when you open the extension. Zero friction workflow.
Convert (Pro) - JSON to YAML for Kubernetes/Docker. JSON to CSV for Excel/Sheets. JSON diff. Schema validation.
100% Local - All processing on your device. API keys, tokens, credentials never touch a server.
BUILT FOR
Frontend devs debugging REST API & GraphQL responses
Backend engineers validating JSON payloads
DevOps/SRE teams editing Kubernetes, Terraform, Docker configs
Data analysts exploring JSON datasets
QA engineers validating API schemas
Anyone using Postman, cURL, DevTools, or log files
HOW IT WORKS
1. Copy JSON from any source
2. Click JSON Formatter Pro icon - auto-pastes from clipboard
3. Click Format - instant beautification with syntax highlighting
4. Switch to Tree View to explore nested objects
Shortcuts: Ctrl+Shift+F (Cmd+Shift+F Mac) to format
PRIVACY: All local. No servers. No analytics. No tracking. No account. Unlike jsonformatter.org or jsonlint.com, your sensitive data stays on your device.
https://zovo.one/privacy/json-formatter-pro
FREE: Format, beautify, minify, validate, tree view, copy, download
PRO: YAML conversion, CSV export, JSON diff, schema validation
Built by Zovo - Developer tools crafted by developers.
https://zovo.one | [email protected]
Latest reviews
- Nakshatra Nahar
- Great Extensions The one of the most useful stuff found on internet
- Asifur Rahman
- This JSON formatter is a clean tool that does exactly what you need by running locally so no sensitive tokens or credentials ever leave your computer. The auto paste from clipboard is such a nice touch because your data is already there the moment you open the extension while the tree view makes navigating messy nested responses super helpful. It cleans up messy data fast and makes everything easy to read which is essential when you are working with API responses all day. Anyone who deals with JSON will find this simple and reliable tool very useful for their daily workflow.
- Oyagi Akuma
- This helps me validate, edit, and beautify JSON in one click, the most powerful JSON tool on chrome.JSON fommerter runs 100% localy, as my data never leaves my browser, no server, no tracking, no risk. why i choose this over the others is that I get more than a viewer, as I can format, validate, minify, convert, and diff JSON. It has 100% local processing, as my API keys, tokens, and config data stay safe
- Daniel Traynor
- Finally stopped pasting API responses into random online formatters. The fact that everything runs locally is a huge deal when your working with tokens and credentials all day. Auto-paste from clipboard is such a nice touch, just open it and your JSON is already there. Tree view is super helpful for navigating messy nested responses too. Clean tool, does exactly what you need.
- Sourav Vinodkumar
- This JSON formatter has been very helpful for my work. It cleans up messy data fast and makes everything easy to read. I like that it runs locally, so nothing important leaves my computer. The tool is simple, quick, and reliable, which makes it easy to use every day. Anyone who deals with JSON will find it very useful.
- Deniz
- This extension from Zovo is just as useful as the other ones I have used made by Zovo. it has made my work with json data so much easier than before by formatting raw data into a simple readable version. It's essential for anyone who works with json data frequently in addition to all that it also does everything local so your critical information stays completely safe.
- SkillSet Nest
- Excellent tool to format JSON. It really saves time and it is easy to use.
- عبدالعليم اسماعيل
- Good, excellent, and speeds up the work.
- khang phan
- Really nice extension. Works really well.
- Fargin tech
- I’ve tried several JSON formatting tools, but JSON Formatter Pro stands out as one of the most reliable and efficient extensions I’ve used. It makes working with raw JSON incredibly easy by instantly transforming messy data into a clean, readable format.
- Contextly
- This extension is exactly what I was looking for, and then some! The UI is incredibly smooth, and it offers far more value than I anticipated. It has officially earned a permanent spot in my Chrome browser. Truly impressive work.
- Lazar Antic
- I’ve been using JSON Formatter Pro for handling raw JSON data, and it’s been a great addition to my workflow. It instantly formats messy JSON into a clean, readable structure, which makes debugging much easier. I also like how fast and responsive it is. Simple, reliable, and very helpful for anyone working with APIs or structured data regularly.
- Gimme Video
- Handy JSON tool for developers who work with APIs regularly. The formatting is instant and the syntax highlighting makes it easy to spot structure at a glance. I really like the validation feature that points out exactly where a JSON error is located rather than just saying it is invalid. The compare mode is useful when debugging response differences between environments. Everything runs locally in the browser which is important when working with sensitive data. The side panel integration keeps the formatter accessible without switching tabs. Clean and focused utility that does its job well.
- Степан Медведев
- good extension !
- Siim Liimand
- Now all my JSON files are properly formatted
- Orion Ventures
- Simple and effective. No unnecessary bloat, just the features I needed. Love the clean design.
- Yuval Rokni
- Very useful plugin!, I love it! Very useful, highly recommend trying it.