The error says "unexpected token" but I can't see anything wrong

check for invisible characters. Copy-pasting from rich text editors, PDFs, or Slack can introduce zero-width spaces, smart quotes (`""` instead of `""`), or em dashes. Paste into a plain text editor first.

"Unexpected end of JSON input"

your JSON is truncated. You're probably missing a closing `}` or `]`. Count your opening and closing brackets.

The error points to a line that looks fine

the actual mistake is usually on the line above. A missing comma after a property causes the parser to choke on the next line.

My JSON has a BOM (byte order mark)

some editors prepend `\uFEFF` to files. The JSON parser sees it as an unexpected character at position 0. Strip it.

Everything validates but my code still can't parse it

check encoding. If the file is UTF-16 and your parser expects UTF-8, it'll fail silently or produce garbage.

All Tools

toolzy.dev / JSON & Data / JSON-Validator

T

JSON Validator

Validate, format, and pretty-print JSON data.