Compress PDF guide
Compression helps when a PDF is too large for an email attachment, upload form, or storage limit. The right preset depends on whether you value maximum visual quality or the smallest practical result.
Open Compress PDFNo account required. This tool uses encrypted upload and temporary server processing.
The process
Open Compress PDF and select one PDF up to 10 MB. Start from the best-quality source available rather than a repeatedly compressed copy.
Use low compression to favor quality, medium for a balanced result, or high when reducing file size matters more than image detail.
Select Compress PDF, then compare the new file size and inspect image-heavy pages at normal viewing size before sharing it.
Medium is a practical starting point; switch to low if quality is more important or high if the result remains too large.
The document may already use compressed images, efficient fonts, or other optimizations that leave little redundant data.
No. It usually favors a smaller file, but detailed images and scans can lose clarity.
Review small text, diagrams, photographs, scanned pages, and the final file size before replacing or sending anything.