What is the most common JSON syntax error?

Trailing commas after the last item in an array or object. Standard JSON does not allow trailing commas, though some parsers are lenient.

Can it validate JSON Schema?

This tool validates JSON syntax only. For JSON Schema validation, you will need a dedicated schema validator.

JSON up to 1 MB can be validated. For larger files, consider validating sections separately.

驗證 JSON 並取得格式化輸出，或顯示帶行號的詳細錯誤資訊。

文字輸入

驗證 JSON 並取得格式化輸出，或顯示帶行號的詳細錯誤資訊。由 JustUse.me 提供 — 免費、無廣告、保護隱私。此工具完全在你的瀏覽器中運行，你的檔案不會被上傳至任何伺服器。