Communicating ideas in digital documents can often be made much clearer through the use of layers. Layers have been supported in PDF documents since version 1.5 through optional content groups (OCGs), also known as PDF layers. “Optional” is key here. OCGs allow us to group [...]
Previously in our PDF Optimization In-depth Series: 1. Introduction to the Optimization of Existing PDF files: Methods 2. Lossless Methods: Optimization of Document Content 3. Lossless Methods: Compression of Streams and Fonts 4. Methods with Losses: JPEG 2000 and JBIG2 5. Methods with losses: resizing, [...]
Previously in the PDf Optimization In-depth Series. 1. Introduction to the Optimization of Existing PDF files: Methods 2. Lossless Methods: Optimization of Document Content 3. Lossless Methods: Compression of Streams and Fonts 4. Methods with Losses: JPEG 2000 and JBIG2 Resizing images Resizing images can [...]
Previously published in the PDf Optimization In-depth Series: 1. Introduction to the Optimization of Existing PDF files: Methods 2. Lossless Methods: Optimization of Document Content 3. Lossless Methods: Compression of Streams and Fonts Sometimes, when acceptable or necessary, it may be interesting to recompress images [...]
Here are the links for the two previous articles of the series: https://www.gdpicture.com/blog/pdf-optimization-series-part1-methods/ https://www.gdpicture.com/blog/pdf-optimization-series-part2-lossless-methods/ A PDF document is composed of various data structures, described as different objects. In the scope of optimization, one is particularly important: the stream object. This object aims to store [...]
The first article of our PDF Optimization In-depth Series is available here. The PDF format is interactive. During the release cycle of a PDF document, different people will use tools such as forms, annotations, attachments, and more. Archived PDF documents generally do not have the [...]
This paper was originally a presentation in French delivered at the PDF Day – France by Loïc Carrère, CEO of ORPALIS, in April 2019. Organized by the PDF Association, the PDF days are the meeting place of the PDF industry, where experts conduct educational (non-commercial) [...]
ZUGFeRD and Factur-X - do you know these words? They both represent standardized e-invoices formats used widely on the European market, especially in Germany and German-speaking countries for ZUGFeRD, and Germany and France for Factur-X. If you are wondering, like one of our users: “ [...]
Hi everyone, It’s been some time since the ISO (International Organization for Standards) has released PDF 2.0 (ISO 32000-2:2017), a long-awaited update of the standardized version of the PDF format, PDF 1.7 (ISO 32000-1:2008). The “next generation of PDF” introduces a wide range of much-awaited [...]
Hi everyone, We continue our PDF Optimization series (started with two articles about fonts, Pack and Optimize Fonts in PDF and Fonts Optimization in PDF with a broader overview of what you can do to optimize PDFs. It’s not news, electronic documents are everywhere. Electronic [...]
