WPS Reduce File Size on iOS FAQ

This FAQ covers common questions about compression results, file quality, entry points, and original-file backup; it includes 4 common questions and 3 glossary terms.

FAQ

Will Reduce File Size affect PDF quality?

1. Reduce File Size mainly works by compressing images and cleaning redundant data.
2. Text content usually remains available after compression, but image clarity may change.
3. If you need to keep the original version, back up the original file before starting compression.

Why is the size reduction not obvious?

1. Reduce File Size mainly targets images and redundant data.
2. If the PDF has few images, or the original file is already small, the available compression space may be limited.
3. Image-heavy PDFs usually show a more visible size change.

What is the difference between Reduce File Size and a ZIP archive?

1. Reduce File Size directly optimizes the internal content structure and image data of the PDF.
2. A ZIP archive compresses the whole file as a package, and the file usually returns to its original size after extraction.
3. If your goal is to get a smaller PDF file itself, use Reduce File Size.

What should I do if I cannot find Reduce File Size?

1. First, make sure the file you opened is a PDF.
2. Check More → All Services, More → More Output Conversion, More → Document Processing, and the bottom Tools area.
3. If the entry point still does not appear, update WPS Office to the latest version and try again.

Glossary