扫描仪 连续pdf

Nearly all software has a particular format that it automatically defaults to when creating a new document or file, but occasionally the chosen format does not seem to intuitively make sense. With that in mind, today’s SuperUser Q&A post has the answer to a curious reader’s question.

几乎所有软件都有一种特定的格式，在创建新文档或文件时，该格式会自动默认为默认格式，但有时所选格式似乎在直观上没有意义。 考虑到这一点，今天的SuperUser Q＆A帖子回答了一个好奇的读者的问题。

Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.

今天的“问答”环节由SuperUser提供，它是Stack Exchange的一个分支，该社区是由社区驱动的Q＆A网站分组。

问题 (The Question)

SuperUser reader vico wants to know why scanners use PDF as the default save format:

SuperUser阅读器vico想知道为什么扫描仪使用PDF作为默认保存格式：

A lot of scanning software has PDF set as the default format for newly created documents. Why is this?

许多扫描软件都将PDF设置为新创建文档的默认格式。 为什么是这样？

As I understand it, scanned documents are pixel based pictures like those in cameras. I am unaware of any cameras that store pictures using the PDF format.

据我了解，扫描文档是像照相机中一样的基于像素的图片。 我不知道任何使用PDF格式存储图片的相机。

What does the PDF format bring to the table such that it is often set as the default?

PDF格式带来了什么，因此通常被设置为默认格式？

Why do scanners use PDF as the default format?

为什么扫描仪将PDF用作默认格式？

答案 (The Answer)

SuperUser contributor Atzmon has the answer for us:

超级用户贡献者Atzmon为我们提供了答案：

There are several advantages to PDF files versus JPG or other graphic formats:

与JPG或其他图形格式相比，PDF文件有几个优点：

• Self contained; you can OCR the text and keep the searchable text with the original bitmap (which is something most scanners can try to do automatically as part of the scan process)自给自足 您可以对文本进行OCR并将原始文本保留在可搜索文本中(大多数扫描仪会在扫描过程中尝试自动执行此操作)
• Securable at the file level itself without using additional tools or relying on operating system specific features可在文件级别本身进行保护，而无需使用其他工具或依赖于操作系统的特定功能
• Cannot be altered without leaving digital footprints不留下数字足迹就无法更改
• Can include metadata, which helps with filing and searching可以包含元数据，这有助于归档和搜索
• Compressible with good control over the compression type and level可压缩，可以很好地控制压缩类型和级别
• Supports multiple pages支持多页

Have something to add to the explanation? Sound off in the comments. Want to read more answers from other tech-savvy Stack Exchange users? Check out the full discussion thread here.

有什么补充说明吗？ 在评论中听起来不错。 是否想从其他精通Stack Exchange的用户那里获得更多答案？ 在此处查看完整的讨论线程 。

Image Credit: npslibrarian (Flickr)

图片来源： npslibrarian(Flickr)

翻译自: https://www.howtogeek.com/276603/why-do-scanners-use-pdf-as-the-default-file-format/

扫描仪 连续pdf