Does compressing PDF affect quality?

Unfortunately, elements in the document can balloon a PDF’s size, which can make it difficult to upload and download files. In an effort to fix the issue, most people resort to compressing the PDF file. However, this potentially degrades the file’s quality.

What happens when you reduce PDF file size?

It will resample and compresses images and subset-embeds fonts that were left embedded. It also compresses document structure and cleans up elements such as invalid bookmarks. If your file size is already as small as possible, the Reduced File Size command will have no effect on the size of your document.

What happens after compressing PDF?

For images and other graphic materials (like PDF files), this means a recreation of the original at a smaller resolution (fewer pixels). Furthermore, once a file is compressed, you may not be able to return it to its original state (unless you keep a backup).

Does compression affect the files?

File compression reduces the size of the file as much as 90\%, without losing any of the primary data. Compressing a file is also known as zipping. File compression will create a version of one or more files with the same data that’s a lot smaller than the uncompressed file.

How do I compress a PDF without losing quality?

Open your PDF file in Preview. It should be the default option, but in case it isn’t, Right Click on the PDF file, select Open with > Preview. Then, click File > Export, and in the Quartz Filter drop-down box, select Reduce File Size. The software will automatically reduce the size of the PDF file.

What does compress PDF mean?

When you reduce the size of a PDF, you are compressing it by 10 to 15 percent in something like a ZIP file. When you compress it, you are maximizing the information while reducing the file as much as 90 percent. To shrink PDF file size as much as possible, choose the Optimizer option instead of the condense PDF option.

How does PDF compression work?

PDF/A is a strict format that only allows lossless compression to reduce the file size since lossy compression tends to degrade the quality of files. Lossless compression works by removing redundancy from the data provided to extract a smaller file that contains all the same information.