PDF Tools
Compress PDF Files Online for Free
Compress PDF files online for free. Reduce PDF file size while keeping pages readable. Fast, secure, and no software or registration required.
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About Compress PDF Tool
Compress PDF Tool reduces .pdf file size so documents fit email limits, upload forms, and shared drives. Upload a PDF, pick a compression level, preview savings, and download a smaller file while keeping pages readable — no software or registration required.
How to compress a PDF for free?
- 1
Upload your PDF
Select the
.pdfyou want to shrink. The tool shows the original file size before compression. - 2
Choose compression level
Pick a preset or quality slider. Higher compression saves more space; lower compression preserves finer detail.
- 3
Download the smaller PDF
Review estimated savings, then download the compressed
.pdfto your device — free, with no account required.
Why compress PDF files?
Scanned reports, photo-heavy brochures, and multi-page exports can exceed attachment limits. Compression shrinks the file without forcing you to recreate the document.
Email-friendly attachments
Bring oversized .pdf files under common 10–25 MB mailbox limits.
Faster uploads
Smaller files upload quicker to job portals, LMS systems, and cloud storage.
Keep text legible
Adjust compression strength to balance size savings with readable body text and diagrams.
Features of this PDF Compress Tool
Quick size reduction
Compress .pdf files in seconds for email and web uploads.
Adjustable quality
Tune compression strength to match text-heavy or image-heavy documents.
Before/after size
See original and compressed file sizes side by side.
Browser-based
No desktop license required — compress from any modern browser.
Mobile support
Shrink .pdf attachments from a phone when a portal rejects a large upload.
Frequently asked questions - FAQs
Quick answers about PDF Compressor.
Yes. Reduce .pdf file size online for free.
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