Compress PDF file size without reducing readability or image quality. Free online PDF file shrinker.
Try to reduce a PDF's size by rewriting its document structure. Choose low, medium, or high optimization, upload the PDF, and compare the before/after sizes. This processor does not downsample embedded pictures, and some PDFs will not become smaller.
Step-by-Step Walkthrough
Step 1
Select a PDF and choose an optimization level.
Step 2
Process the file through the online compression endpoint.
Step 3
Compare sizes and download the returned PDF.
Pro Tip for Best Output Quality
The server upload limit is 80 MB. No percentage reduction is guaranteed.
Image-heavy PDFs may show little or no reduction. Keep an original copy if metadata matters.
Key Capabilities & Features
Three levels
Select low, medium, or high optimization.
Document cleanup
Rewrite PDF storage and remove selected metadata at stronger levels.
Size comparison
See original size, output size, and whether optimization helped.
Original-size fallback
Return the original bytes when rewriting would make the file larger.
Recommended Creative Use Cases
Frequently Asked Questions
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