Supports Adobe Standard 40-bit Encryption and Adobe Advanced 128-bit Encryption. Supports AES encryption. Password protect opening of the document. Supports user password and owner password. Prevent printing of the document. Prevent copying of text/graphics. Prevent changes to the document. Supports add printing, copying and changing permissions to an encrypted PDF file. Set the document title,subject,author,keywords,creator,producer to the encrypted PDF file(s). Supports PDF1.8 protocol . Adobe Acrobat doesn?t need to be installed. Convert without any software support. Support Batch convert. Fast speed conversion. FREE upgrade.

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