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How does handwriting scanning to pdf differ from editing pdf directly?

First of all, there is no difference in formatting or root directory

The purpose of PDF is to keep the format uniform and difficult to modify. See this article for details.

Do PDFs have their own unique advantages and benefits? Do young student teachers want us to only toss: PDF exists,combine pdfs for free windows does it have any advantages of its own?

In all but two areas, there are problems

Firstly, why does PDF need a uniform format maintenance feature?

To ensure that others can see your text/slides, you reformat them

How do you adjust the line spacing and paragraph widths like in Word.......

There is a possibility that some of the students in question have studied Chinese calligraphy, but this is a minority.

In summary, handwritten pdfs look bad and don't read well, either in format or font.

Handwritten PDFs are difficult to scan

A scanned PDF file contains images, while a document PDF file contains graphics, tables, and characters. The latter can be copied and pasted into other text editors, while the former requires OCR recognition.

In terms of file size, the former file is larger, possibly due to scanning resolution, which is unclear. The latter text and tables are vector format, can be infinitely enlarged without distortion, and print output is good.

The conversion of PDFs is also popular among many people themselves

It is almost impossible to convert a PDF scanned by hand into text.

A lot of PDF conversion systems are designed to view the quality of the source PDF, so the converter can output anything that is not so awesome.

Some features are better than others at best