Free JSON Formatter & Validator Alternative
JSON Formatter & Validator (jsonformatter.org) is a popular free tool for formatting, validating, and converting JSON data. It offers tree view navigation, multiple indentation options, and conversion to XML, CSV, and YAML. The tool works across all major browsers and platforms, making it accessible for developers everywhere. While JSON Formatter & Validator provides excellent JSON-to-format conversion, it doesn't support YAML or XML as input formats — you can convert JSON to YAML, but not format or validate YAML files directly. Fixie's formatter handles JSON, YAML, and XML as both input and output, with full bi-directional conversion support.
Try JSON/YAML/XML Formatter Free →JSON/YAML/XML Formatter vs JSON Formatter & Validator
| Feature | Fixie JSON/YAML/XML Formatter | JSON Formatter & Validator |
|---|---|---|
| Price | Free forever | Free |
| Signup Required | No | No (optional for saving links) |
| Privacy / Data Handling | 100% client-side — data never leaves your browser | Client-side processing |
| Input Formats | JSON, YAML, XML | JSON only |
| Output Formats | JSON, YAML, XML | JSON, XML, CSV, YAML |
| Format Conversion | Bi-directional: JSON ↔ YAML ↔ XML | One-way: JSON → XML/CSV/YAML |
| Tree View | Not available | Yes |
| URL Sharing | Not available | Yes (requires login for private links) |
| Ads | None | None |
Why Choose Fixie?
JSON Formatter & Validator is a powerful tool for JSON-centric workflows, especially if you need to convert JSON to other formats like CSV for spreadsheets or YAML for configuration files. The tree view makes it easy to navigate complex nested JSON structures, and the URL sharing feature is useful for collaboration. If you primarily work with JSON and occasionally export to other formats, JSON Formatter & Validator is an excellent free option.
However, the tool's limitation is that it only accepts JSON as input. If you receive a YAML configuration file from a teammate or need to validate an XML feed, you'll need a separate formatter. Fixie supports JSON, YAML, and XML as both input and output formats, allowing you to paste any of the three and format, validate, or convert it to another format instantly.
Fixie's bi-directional conversion also makes it more flexible. You can convert YAML to JSON for API compatibility, transform XML to YAML for cleaner configs, or switch between formats as needed — all in the same interface. While JSON Formatter & Validator offers features like tree view and URL sharing that Fixie doesn't have, Fixie's multi-format input support eliminates the need to juggle multiple formatter tools for different data types.
How to Use JSON/YAML/XML Formatter
Step 1: Open the Formatter
Visit fixie.tools/formatter in any browser — no installation or signup required.
Step 2: Choose Your Format
Select JSON, YAML, or XML from the format dropdown. Unlike JSON Formatter & Validator, which only accepts JSON input, Fixie handles all three formats.
Step 3: Paste Your Data
Copy and paste your JSON, YAML, or XML data into the editor. The tool will validate syntax in real-time and highlight any errors.
Step 4: Format or Convert
Click the format button to pretty-print your data, minify to compress it, or convert to a different format. For example, convert YAML to JSON, JSON to XML, or XML to YAML — all processing happens locally in your browser.