Side by side
JSON Formatter vs JSON Viewer
Both stand on json tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Web
JSON Formatter combines everyday formatting and validation with repair, JSONPath filtering, and command-body extraction. Its in-browser processing and share links that carry the JSON may suit users who want to avoid server-side storage, while larger documents depend on the capacity of their machine.
Visit JSON Formatter Free plan Mac
JSON Viewer focuses on straightforward local JSON inspection with validation and formatting controls. Its small download, offline operation, and free pricing are balanced by macOS version requirements.
Visit JSON ViewerThe facts
| JSON Formatter | JSON Viewer | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | Mac |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | json-formatter.org | jsonviewer.app |
| On json tools | #21 of 29 | #25 of 29 |
JSON Formatter: what it does well
- Validates against four listed JSON standards
- Reports syntax errors by line and column
- Repairs several common invalid JSON patterns
- JSONPath can extract selected fields
- Free plan; no sign-up required
What to know first
- Web platform only
- Practical file capacity depends on your machine
JSON Viewer: what it does well
- Syntax highlighting for JSON
- Expand and collapse large data nodes
- Prettify or minify in one click
- Automatic invalid-syntax highlighting
- Offline local processing
What to know first
- Version 2.0.0 requires macOS 26 or later
- Only macOS is listed
- No free trial is offered
Alternatives to JSON Formatter Alternatives to JSON Viewer The whole list