---
title: "JSON Validator: Check JSON and find the exact error"
canonical: "https://openvibe.tools/tool/jsonvalidate"
updated: null
---

# JSON Validator: Check JSON and find the exact error

HTML: [JSON Validator: Check JSON and find the exact error](https://openvibe.tools/tool/jsonvalidate)

# JSON Validator

Find out whether a document is valid JSON and, if it is not, where it breaks: the line and column of the first error, with the common causes (trailing commas, single quotes, unquoted keys, comments) called out.

- **Limits** No daily limit on the page
- **Where it runs** Runs in your browser; nothing is uploaded.
- **Cost** Free, with the limits above. No account needed.

 [Open JSON Validator](https://json-validator.openvibe.tools/) 

## Where to find it

Every address below opens the same tool. The first address is the one to bookmark and share.

- [jsonvalidate.openvibe.tools](https://jsonvalidate.openvibe.tools/)Easiest to remember
- [json-validator.openvibe.tools](https://json-validator.openvibe.tools/)Search-friendly address
- [jsonlint.openvibe.tools](https://jsonlint.openvibe.tools/)Redirects here
- [validatejson.openvibe.tools](https://validatejson.openvibe.tools/)Redirects here
- [json-lint.openvibe.tools](https://json-lint.openvibe.tools/)Redirects here
- [jsoncheck.openvibe.tools](https://jsoncheck.openvibe.tools/)Redirects here

## People also call this

**What it's for:** Check JSON and find the exact error. Find out whether a document is valid JSON and, if it is not, where it breaks: the line and column of the first error, with the common causes (trailing commas, single quotes, unquoted keys, comments) called out..

**What trips people up:** **Why is a trailing comma an error?** JSON is stricter than JavaScript. A comma after the last item in an object or array is not allowed by the JSON specification, even though most JavaScript engines accept it in code.

- json validator
- json lint
- validate json online
- json checker
- json syntax error
- jsonlint

## Use it from code

- `POST https://openvibe.tools/api/v1/tools/jsonvalidate/run`
- No account needed: anonymous calls run on the lowest quota tier; a token with `tools.tool.run` raises it.
- It answers with the result.

~~~~
curl -X POST https://openvibe.tools/api/v1/tools/jsonvalidate/run \
  -H 'Content-Type: application/json' \
  -d '{"input":{"text":"{\"a\":1,}"}}'
~~~~

Inputs: [JSON Schema](/api/v1/tools/jsonvalidate/schema) · [OpenAPI](/api/v1/openapi.json) · from JavaScript: `tools.run("jsonvalidate", …)` in [openvibe-sdk](https://github.com/OpenVibers/OpenVibe.SDK) · [How the API works](/developers)

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