What causes "SyntaxError: Unexpected end of JSON input"?

An empty string '' was passed to JSON.parse() The JSON was truncated mid-transfer (network timeout or buffer limit) A missing closing bracket ] or brace } at the end of the JSON The API response body was empty (204 No Content treated as JSON)

JSON Error2 Fixes Available

SyntaxError: Unexpected end of JSON input

SyntaxError: Unexpected end of JSON input

What does this error mean?

This error means JSON.parse() reached the end of the string before the JSON structure was complete. The input is either empty, truncated, or has unclosed brackets/braces.

Common Causes

An empty string '' was passed to JSON.parse()
The JSON was truncated mid-transfer (network timeout or buffer limit)
A missing closing bracket ] or brace } at the end of the JSON
The API response body was empty (204 No Content treated as JSON)

How to Fix It (2 Solutions)

Check for empty input

Guard against empty strings before parsing.

Code

const text = await res.text();
const data = text ? JSON.parse(text) : null;

Validate the JSON structure

Paste your JSON into our formatter to find missing brackets or braces.

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