security_level

Type: int security_level;

This parameter specifies the security level - i.e. the amount of redundancy built in to the barcode image to allow for errors to be corrected. The greater the security level the larger the barcode image. See 2D-Barcodes Help for details.

Allowed values are 0 - 8 for PDF417.

Allowed values for Aztec codes depend on the mode, and are 0-99 for Normal mode, 1-4 for Compact mode, and 1-32 for Full range mode (the value is ignored for Runes). Note that for Compact and Full range the security level is actually the required number of Aztec layers in the symbol.

For Datamatrix symbols the allowed values are 0 – 23 for Square symbols, or 0 – 6 for Rectangular symbols.

For QR Codes the allowed security levels are 0 – 3. (0-2 for Micro QR Code).

For other barcode types this parameter should be 0.

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aspect_ratio