If you're tired of endlessly looking online for the right tool, or to find again that website of which you don't recall the name to do a quick conversion, this is the right app for you.
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Linux
- Flathub
- Flatpak


+1
A free, fast, and clean web-based tool to format, validate, and minify JSON. No sign-ups, no ads, and no distractions — just paste your JSON and get instant results.



A powerful online JSON formatter, editor and validator with multiple visualization modes including code, tree, table and graph views, making JSON debugging and manipulation effortless.
Cost / License
- Free
- Proprietary
Platforms
- Online


+2
Easily convert JSON to YAML, right in your browser. No ads, no remote servers, and completely private!
Cost / License
- Free
- Proprietary
Platforms
- Online
A free web app providing 200+ online tools for developers, including JSON formatters, PDF mergers, code converters, data generators, and more—no signup required.
Cost / License
- Free
- Proprietary
Platforms
- Online
Every tool you need to use JSONs, at your fingertips. All are 100% FREE and easy to use! Format, validate, convert, compare and generate JSONs with just a few clicks.Free, no signup.
Cost / License
- Free
- Proprietary (MIT)
Platforms
- Online


StringFlux is a free online tool for developers to simplify string transformations like JSON escape, Base64 encode, URL encode, and more — all in one streamlined, privacy-friendly interface.
Cost / License
- Free
- Proprietary
Platforms
- Online

Free online tool to convert between various data formats including Javascript, JSON, HTTP Query String and more.
Cost / License
- Free
- Proprietary
Platforms
- Online
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Linux
- Flathub
- Flatpak


+1
DataLensia is a privacy-first, browser-based data toolkit that lets you visualize CSV datasets and work with JSON/NDJSON using tools like a JSON comparator, schema generator, editor, and converter — all processed locally.


+13
JSONReader provides a suite of powerful tools to manipulate, format, validate, and beautify JSON data efficiently. Whether you're a developer, data analyst, or just working with JSON, our tools ensure a seamless experience.



































