PDF5 min readAugust 16, 2026
How to Compress a PDF Online
Learn how to reduce PDF file size while keeping your document readable and useful.
C
ClearKitPDF
PDF & document guides
PDF files are useful for sharing documents, but large files can be difficult to upload, email or store. Compressing a PDF can reduce its file size while keeping the document useful and readable.
Why compress a PDF?
Smaller PDF files are generally easier to upload, share and store. This can be especially helpful when a website or email service has a file-size limit.
What affects PDF file size?
Images, scanned pages, embedded fonts and other document resources can contribute significantly to the size of a PDF.
A simple PDF compression workflow
- Select the PDF you want to optimize.
- Choose an appropriate compression level.
- Process the document.
- Check the resulting file before sharing it.
ClearKitPDF Tool
Need to work with a PDF?
Use ClearKitPDF tools directly in your browser for common PDF and document tasks.
Continue Reading