Best JSONLint Alternatives: Validating and formatting JSON in 2025
For anyone handling JSON data—whether you’re a developer, analyst, or just curious about how structured data works—the need for a reliable tool to validate and format JSON is critical. JSONLint has stood out as a solid choice for years, but you might be looking to explore other effective JSONLint Alternatives and best for Validating and formatting JSON in 2025. Maybe you’re searching for different features, a faster interface, or reliable bulk handling—whatever your need, this list has something for everyone.
Let’s dive right into some of the top alternatives that can help you breeze through JSON validation and formatting tasks efficiently.
Top 10+ Alternatives for JSONLint in 2025
1. JSON Formatter & Validator by Curious Concept
This simple and widely-used online tool lets you quickly check, prettify, and validate your JSON data. Its clean interface and fast checks make it ideal for quick turnarounds.
- Supports large JSON files
- Easy toggle between formatted and compact view
- Provides detailed error location and description
Visit JSON Formatter & Validator
2. JSONCompare
If you often need to compare two JSON objects, JSONCompare is a perfect pick. On top of validation and formatting, it highlights the differences, making debugging a breeze.
- Validate and compare two JSON strings side by side
- Detailed error reports and difference highlighting
- Option to merge or edit directly
3. JSON Editor Online
Looking for a more interactive experience? JSON Editor Online comes with a tree and text view for deep editing, formatting, and validation of complex JSON structures.
- Edit, view, and format JSON
- Switch easily between code and tree view
- Share JSON securely with others
4. JSON Formatter by FreeFormatter
FreeFormatter’s tool excels in quickly beautifying and validating JSON, giving you error feedback and instant results, all on one clean web page.
- Validate, format, and minify JSON
- Returns the first error with a clear message
- Supports compressed JSON as well
Visit FreeFormatter JSON Formatter
5. JSON Utils
For those who need more than just validation, JSON Utils comes loaded with conversion tools, making it easy to generate JSON code from tables or CSVs and more.
- Generate JSON from various data formats
- Validate and format with error highlighting
- Reverse conversion (JSON to table/CSV)
6. JSON Formatter by Code Beautify
This is an all-in-one free web-based toolkit for formatting, validating, visualizing, and editing your JSON strings quickly.
- Beautify and validate JSON
- Visualize JSON data structure
- URL, file, or direct input support
Visit Code Beautify JSON Formatter
7. JSON Formatter & Validator by JSONFormatter.io
Slick design and fast performance are what set this tool apart. It works well for both short and extensive JSON documents and provides instant, accurate feedback.
- Supports both formatting and validation
- Error line and character pointer
- Minify and beautify features
8. JSON Viewer by Dadroit
If you’re handling large and complex datasets, Dadroit’s JSON Viewer is powerful, letting you load, view, search, and validate JSON deeply and efficiently.
- Desktop app for Mac, Windows, Linux
- Handles very large JSON files
- Powerful search and filter features
9. JSON Parser Online by JSON Parser
This tool is straightforward: paste your code, and you can format, validate, minify, or convert between JSON and XML instantly.
- Supports format, validation, minify, and convert
- JSON to XML and XML to JSON
- Provides detailed error output
10. JSON Formatter by TutorialsPoint
Fast and efficient, this web-based formatter by TutorialsPoint is great for basic validation, formatting, and error detection in JSON documents.
- Instant JSON validation and formatting
- Highlights the exact location of errors
- No login or registration needed
Visit TutorialsPoint JSON Formatter
11. JSONViewer (Windows App)
Prefer working offline? JSONViewer is a downloadable Windows utility to view, format, and validate any JSON file, perfect for local, sensitive projects.
- Works without Internet connection
- Tree view for easy navigation
- Instant validation and formatting
Conclusion
Whether you’re working in the browser, prefer a dedicated desktop app, or need a heavy-duty JSON validator, there’s a JSONLint alternative out there for you. All these tools cover core validation and formatting but also offer unique specialties—like comparing, visualizing, or converting JSON data. Next time you’re handling a tricky data set, give one of these JSONLint Alternatives and best for Validating and formatting JSON a try!