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Compression Level
Compress once to create all three versions and see their actual file sizes.
Page dimensions and orientation stay the same. Compression flattens each page into an image, so selectable text, links, forms, and layers will no longer be interactive.
How to compress a PDF
Your PDF stays on your device. The three output sizes are measured from the finished files, not estimated.
Open your PDF
Choose a PDF from your device or drag it into the preview area.
Create three versions
Choose Compress & compare to process Strong, Balanced, and Light compression locally.
Compare actual sizes
Review the finished file size and percentage change shown for every level.
Download your choice
Select the quality level you prefer and download that compressed PDF.
Questions about PDF compression
Results depend on the images and structure already inside the original PDF.
Will the PDF page dimensions change?
No. Each visible page keeps its original width, height, and orientation.
Why can a compressed file sometimes be larger?
A PDF that is already optimized, or mostly contains efficient text and vector graphics, may become larger when its pages are converted to images. The tool shows that result clearly before download.
Are my PDF files uploaded?
No. Opening, compressing, comparing, and downloading happen locally in your browser.
What changes during compression?
Every page is rendered as a JPEG image. This reduces image-heavy files well, but selectable text, forms, links, layers, and vector editing are flattened.