Working with JSON is an unavoidable part of development today — whether you’re building APIs, integrating third-party services, or debugging data. While modern editors offer basic JSON support, dedicated tools can significantly speed up your workflow and reduce errors.
Here are 6 must-try JSON tools that every developer should have bookmarked 👇
🧼 1. FormatJSONOnline.com
A clean, ad-free JSON formatter and validator you can use without any distractions. It handles formatting, validation, and even minification in a single click — all in the browser.
🔹 No login
🔹 No ads
🔹 Lightning fast
🔹 Mobile-friendly
If you're tired of bloated tools or copy-pasting into formatters filled with popups, this one is for you.
🧰 2. JSON Formatter Chrome Extension
This browser extension highlights and formats JSON directly when opening .json files — ideal for debugging APIs on the fly.
- Developer: Callum Locke
- Works in Chrome/Brave/Edge
🧪 3. JSONLint
A classic online validator that catches structural issues in your JSON and gives line-specific errors.
🧾 4. Postman
More than just a JSON tool — Postman is perfect for testing, formatting, and visualizing API responses.
- Format JSON instantly in the response body tab.
- Easy to switch between pretty/raw views.
✂️ 5. JSON Minify
Minifies your JSON to make it lighter — useful for embedding in scripts or reducing payload size.
🔗 https://codebeautify.org/jsonminifier
🔧 6. jq (Command Line JSON Processor)
If you're a terminal power-user, jq is a must-have for parsing and formatting JSON in your CLI scripts.
bash
cat data.json | jq '.users[0].name'
Great list, I would like to add one more to this: toolifyx.com/json-formatter.
I have built this as tool suite for devs to have most commonly used tools at one place so that they have to juggle between sites for easing their workflow, I myself have faced this issue so I have built one.