Enhance/Improve PDF quality

PDF (Portable Document Format) is a file format created by Adobe in 1993 to enable the sharing of documents across different systems without needing the original software or formatting changes. A PDF file keeps the original layout, images, fonts, and colors intact, making it ideal for documents that need to look the same on all devices.

Interesting Facts about PDFs:

1. Universal Format: PDFs are one of the few formats that look identical on any operating system (Windows, Mac, Linux) or device (PCs, smartphones, tablets).
2. Archival Standard: PDF/A, a version of PDF, is specifically designed for long-term document preservation, following strict guidelines to ensure files are accessible in the future.
3. Security Features: PDFs can be encrypted, password-protected, and set with specific permissions, such as preventing others from editing or printing.
4. Interactive Elements: A PDF can contain not only text and images but also hyperlinks, videos, forms, and buttons, making it more dynamic than most document formats.
5. NASA Uses PDFs in Space: Since PDFs don’t depend on any particular system to render correctly, they’re used in space for astronaut manuals and data sheets.