Large PDF files can be difficult to upload, email, or store. PDF compression can reduce the file size while keeping the document readable and usable.
How to Compress a PDF with PDF Hub
- Open the Compress PDF tool.
- Select one PDF file or drag it into the upload area.
- Click the Compress PDF button.
- Wait while the document is optimized.
- Download the compressed PDF file.
What You Should Know Before Compressing a PDF
- The maximum total upload size is 24 MB.
- The PDF can contain up to 50 pages.
- Only PDF files are supported.
- Compression results depend on the content and structure of the original document.
- A small or previously optimized PDF may not become significantly smaller.
Why Some PDF Files Compress Better Than Others
PDF files containing large images, scans, or unoptimized resources usually offer more opportunities for compression. Documents that mainly contain text or have already been optimized may show a smaller reduction in file size.
The final result should always be reviewed before it is shared, printed, archived, or used for an important purpose.
Are Uploaded Files Stored?
Uploaded files are used only to perform the requested operation. The uploaded document and generated result are automatically deleted from the processing server after the request is completed.
When Is PDF Compression Useful?
Compressing a PDF can be useful when attaching documents to email, submitting files through an online form, reducing storage usage, or preparing documents for faster sharing and downloading.
Need a smaller PDF file? Open the free Compress PDF tool and optimize your document online.