Compress PDF

Reduce the file size of your PDF. Free, private, browser-based — your file is never uploaded.

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Only PDF files accepted

Note: This tool compresses PDFs by removing unused objects and optimizing internal structure. For image-heavy PDFs, the reduction may be modest. Scanned PDFs with large embedded images see the biggest size difference.

Frequently Asked Questions

Why is my PDF not getting smaller?

PDFs that already contain compressed images or are already optimized may not shrink further with this method. Text-heavy PDFs compress best.

Is quality lost when compressing?

Text quality is not affected. This tool does not reduce image resolution — it only removes internal redundancy.

My PDF is still too large — what should I do?

For PDFs with many large images, consider reducing image resolution before creating the PDF. Adobe Acrobat's "Save as Optimized PDF" feature offers the deepest compression.