Reduce the size of your PDF
Select a PDF, choose an optimization level, and create a smaller document whenever possible inside your private Kukureku workspace.
Private
Files stay on your device
Fast
Built for quick results
Browser-based
No software installation
Simple
Upload, process, download
Select one PDF file
Choose or drag the PDF document you want to optimize.
Supported format: PDF ยท Maximum file size: 25 MB
You can also press Enter or Space to browse files.
Helpful tips
Get the best result
Choose the right level
Medium is recommended for most documents. High may provide better optimization but can require more processing time.
Some PDFs are already optimized
A PDF that is already compressed may show little or no additional size reduction.
Review the downloaded file
Open the result once to confirm that the document remains clear and readable.
Frequently asked
Common questions
Why did the PDF size not decrease?+
The PDF may already be optimized, or it may contain content that cannot be reduced further by the current browser-based compression engine.
Which optimization level should I select?+
Medium is recommended for most files. Low prioritizes compatibility, while High attempts maximum optimization.
Is my PDF uploaded?+
No. The PDF is processed locally inside your browser.
Keep working
Need another PDF tool?
Continue with another document task from the Kukureku PDF workspace.