Optimize PDF
Compress PDF
Reduce PDF file size with low, balanced, or high compression levels. Actual size reduction depends on the document's content.
Drag and drop files here, or click to browse
Accepted: PDF
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How Compress PDF works
- 1Upload your file — it's validated and sent to our servers over an encrypted connection.
- 2Choose your options and click the tool's action button.
- 3Your file is processed by a real conversion/processing engine in a background job — not in your browser.
- 4Download the result. Both the original and result files are automatically deleted after a short retention window.
Frequently asked questions
What does Compress PDF do?
Reduce PDF file size with low, balanced, or high compression levels. Actual size reduction depends on the document's content.
What file formats are supported?
This tool accepts PDF files.
Are my uploaded files stored?
Files are stored only long enough to process your request, then automatically deleted according to our retention settings — typically within a couple of hours. We never use your documents for anything other than fulfilling your request.
What are the limitations of this tool?
Reduction varies by content — image-heavy PDFs compress far more than text-only PDFs. Requires the mutool or qpdf system engine to be installed on the server.