Base64 Encoder / Decoder
Encode Unicode text as Base64 and decode it back.
DeveloperDeveloper tools
JSON Formatter & Validator
Validate JSON and format it for reading or compact transfer.
Your workspaceProcessed in your browser
Loading workspace…
How to use json formatter & validator
- Paste valid JSON into Input.
- Choose Pretty (2 spaces), Pretty (4 spaces), or Compact in Formatting.
- Select Process input and inspect or download formatted.json.
Work through an example
Validate JSON syntax, choose readable indentation, and recognize precision and schema limits before copying an API response.
Format an API response without changing identifier meaning →Formats, privacy, and practical limits
This tool processes the values you enter in your browser. No account or upload to ERITHRA is required.
Files and generated results exist only for this tab session. Download any result you want to keep before leaving the page. Browsers may use temporary memory or disk cache while processing.
Frequently asked questions
Does successful formatting validate my API schema?
No. It validates JSON syntax, while required fields and application rules need separate schema validation.
Can formatting preserve every large numeric identifier?
Large integer literals may lose precision in the browser parser. Represent identifiers as JSON strings before parsing.