Shrink bulky PDF files down to lightweight sizes that glide through email attachments, without turning text or graphics into a blurry mess.
Shrink PDF file sizes while keeping your text sharp and vector graphics crisp
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.
Fast and easy from start to finish
Select a PDF and choose an optimization level.
Process the file through the online compression endpoint.
Compare sizes and download the returned PDF.
What you can do with this tool
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.
Everyday walkthroughs and starter ideas for PDF Compressor
Try medium mode on a report and check whether its output size is lower.
File requirements, capabilities, and system limits
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.
How creators, students, and professionals use PDF Compressor
Try optimizing a PDF before sending it by email.
Compare document sizes after structural cleanup.
Answers to common questions about PDF Compressor
The file may already be optimized or mostly contain images. This implementation rewrites PDF structure rather than reducing image resolution, and keeps the original bytes when the rewritten file is not smaller.
Yes. High mode removes title, author, subject, and keywords. Medium and high modes also change creator/producer metadata.
No. The PDF is uploaded to a server endpoint for processing.
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