# JSON Dev Tools

> A suite of free, privacy-first JSON and developer tools that run entirely in the browser. Your data — JSON, tokens, manifests — is parsed locally and never uploaded to a server. No signup, no tracking of the content you paste.

## Core tools
- [JSON Formatter](https://jsondevtools.org/formatter.html): Pretty-print, beautify, validate, and minify JSON in the browser.
- [JSON Validator](https://jsondevtools.org/json-validator.html): Validate JSON syntax and locate errors using the browser's native parser.
- [JSON Schema Validator](https://jsondevtools.org/json-schema-validator.html): Validate JSON against a JSON Schema.
- [JSON Schema Generator](https://jsondevtools.org/json-schema-generator.html): Infer a draft-07 JSON Schema from sample JSON.
- [JSON Diff](https://jsondevtools.org/json-diff.html): Compare two JSON objects key by key.
- [JWT Decoder](https://jsondevtools.org/jwt-decoder.html): Decode a JSON Web Token's header and payload locally — the token is never transmitted.
- [Base64 Encoder & Decoder](https://jsondevtools.org/base64.html): Encode and decode Base64 in the browser.
- [JSON to YAML](https://jsondevtools.org/json-to-yaml.html): Convert JSON to YAML, including for Kubernetes manifests.

## Reference
- [HTTP Status Codes for JSON & REST APIs](https://jsondevtools.org/http-status.html): Searchable reference of all HTTP status codes with example JSON error responses and troubleshooting checklists.

## Key guides
- [Is It Safe to Paste JSON Into an Online Formatter?](https://jsondevtools.org/blog/is-it-safe-to-paste-json-online.html): Browser-only vs server-based tools, and how to verify which one you're using.
- [Is It Safe to Decode a JWT Online?](https://jsondevtools.org/blog/is-it-safe-to-decode-jwt-online.html): Why a JWT is a credential, decoding vs verifying, and how to decode safely.
- [How to Read a Minified JSON API Response](https://jsondevtools.org/blog/read-ugly-json-api-response.html): Five methods compared — browser formatter, DevTools, jq, Python, Postman.
- [JSON to YAML for Kubernetes](https://jsondevtools.org/blog/json-to-yaml-kubernetes.html): The string-boolean trap and other manifest conversion gotchas.

## Key facts
- All tools run client-side in the browser; the content you paste is never sent to a server.
- Free to use, no account required.
- Built by Pasindu Ishan, a software developer. About: https://jsondevtools.org/about.html