xtekky/gpt4free · error · ValueError

Invalid image format (from magic code).

Error message

Invalid image format (from magic code).

What it means

Error "Invalid image format (from magic code)." thrown in xtekky/gpt4free.

Source

Thrown at g4f/image/__init__.py:270

        binary_data (bytes): The binary data to check.

    Raises:
        ValueError: If the image format is not allowed.
    """
    if binary_data.startswith(b"\xFF\xD8\xFF"):
        return "image/jpeg"
    elif binary_data.startswith(b"\x89PNG\r\n\x1a\n"):
        return "image/png"
    elif binary_data.startswith(b"GIF87a") or binary_data.startswith(b"GIF89a"):
        return "image/gif"
    elif binary_data.startswith(b"\x89JFIF") or binary_data.startswith(b"JFIF\x00"):
        return "image/jpeg"
    elif binary_data.startswith(b"\xFF\xD8"):
        return "image/jpeg"
    elif binary_data.startswith(b"RIFF") and binary_data[8:12] == b"WEBP":
        return "image/webp"
    else:
        raise ValueError("Invalid image format (from magic code).")


def detect_file_type(binary_data: bytes) -> tuple[str, str] | None:
    """
    Detect file type from magic number / header signature.

    Args:
        binary_data (bytes): File binary data

    Returns:
        tuple: (extension, MIME type)

    Raises:
        ValueError: If file type is unknown
    """

    # ---- Images ----
    if binary_data.startswith(b"\xff\xd8\xff"):

View on GitHub (pinned to 973504e177)

Solutions

1. Provide a valid image file whose magic bytes match a supported format (png, jpeg, gif, webp).

When it happens

Trigger: Thrown at g4f/image/__init__.py:270 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of xtekky/gpt4free@973504e177 (2026-08-14). Data as JSON: /api/errors/bfc9ac4ab4d1dc12. Report an issue: GitHub.