PDF Compressor
Online & free tool to reduce PDF size for sharing and web use


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Higher compression reduces file size and may lower image quality inside the PDF.
Original size
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Estimated size
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Potential savings
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How to compress a PDF online

STEP 1

Upload one or more PDF files from your device.

STEP 2

Click Compress to shrink the file for email, forms, and faster downloads.

STEP 3

Download when processing finishes. Each file stays available for up to 5 downloads.

Built for sharing

Compressed PDFs stay readable for email, forms, and the web while cutting attachment and upload size.

Works anywhere

Browser-based compression on Windows, Mac, Linux, and mobile. No app install required.

Private by design

Uploads use encrypted connections. Finished files stay available for limited downloads, then expire.

When to compress a PDF

Use compression before emailing large reports, uploading to job or school portals, or hosting documents on a website. Image-heavy and scanned PDFs usually shrink the most; text-only files may shrink less but still send more reliably.

Quality vs file size

Text and vector content usually stay sharp. Photos and scans may look slightly softer after aggressive compression. Spot-check a page if you need print quality.

Related PDF and compress tools

Will PDF compression make text unreadable?

Text-heavy PDFs usually stay clear. Scanned pages and large embedded images shrink more and may look slightly softer. Check a page after download if print quality matters.

Why compress a PDF before emailing it?

Many mail systems and upload forms reject large PDFs. Compression reduces attachment size so the document sends and opens more reliably.

Can I compress multiple PDFs at once?

Yes. Upload a batch within the plan limits on the page, compress in one job, and download each optimized PDF.

Does compressing a PDF remove pages or passwords?

No. Compression targets file size. Use split, remove-pages, or unlock tools if you need those changes.