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  2. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    Enterprise-level creator to create, review, edit, share or archive PDF and XPS documents. After 30 days shareware version places a watermark on documents. HelpNDoc: Proprietary: Yes: Manual and documentation authoring tool with native PDF export. Free for personal use. Mathcad: Proprietary: No: Mathcad worksheets can be saved as PDF files.

  3. PDF24 Creator - Wikipedia

    en.wikipedia.org/wiki/PDF24_Creator

    The commands sent are then used to create a PDF file. PDF24 Creator uses PDFBox , QPDF and Ghostscript , which are automatically installed as a private instances for the PDF24 Creator. After printing a document on the PDF printer, a wizard opens automatically, where the created PDF file can be edited or further worked on.

  4. Watermark - Wikipedia

    en.wikipedia.org/wiki/Watermark

    Another type of watermark is called the cylinder mould watermark. It is a shaded watermark first used in 1848 that incorporates tonal depth and creates a greyscale image. Instead of using a wire covering for the dandy roll, the shaded watermark is created by areas of relief on the roll's own surface.

  5. Smallpdf.com - Wikipedia

    en.wikipedia.org/wiki/Smallpdf.com

    Smallpdf is a Swiss online web-based PDF software, founded in 2013. [2] It offers free version with limited features to compress, convert and edit PDF documents. [ 3 ] And its paid version offers advanced features like OCR, compress, and more [ 4 ] .

  6. Printer tracking dots - Wikipedia

    en.wikipedia.org/wiki/Printer_tracking_dots

    Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...

  7. Digital watermarking - Wikipedia

    en.wikipedia.org/wiki/Digital_watermarking

    Watermarks are identification marks produced during the paper-making process. The first watermarks appeared in Italy during the 13th century, but their use rapidly spread across Europe. They were used as a means to identify the paper maker or the trade guild that manufactured the paper. The marks often were created by a wire sewn onto the paper ...