Free PDF Tool
Compress PDF Online, Free
Reduce your PDF file size instantly. No signup, no upload to servers, no size limits. Your file never leaves your device.
Drop a PDF here or click to browse
One PDF at a time. Your file is never uploaded.
Upload your PDF
Drop a PDF above or click to browse. It is processed entirely in your browser.
Click Compress
Our tool removes redundant data and optimizes the PDF structure to reduce file size.
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Get your smaller PDF instantly. Nothing is uploaded or stored anywhere.
How to compress a PDF online
Why compress PDF files?
Large PDF files cause problems in everyday workflows. Email attachments get rejected when they exceed size limits. Fax services often cap file sizes at a few megabytes. Cloud storage fills up faster. Compressing a PDF removes redundant data and optimizes its internal structure so you get a smaller, faster file without losing content.
Is my data private?
Yes. FaxDrop's PDF compressor runs entirely in your browser. Your PDF file is never uploaded to any server, never stored, and never transmitted over the internet. The compression happens locally on your device, so your documents stay completely private from start to finish.
What kinds of PDFs compress best?
PDFs with embedded fonts, metadata, form fields, and duplicate object references see the biggest size reductions. PDFs that are already highly optimized or primarily made up of raw image data may see smaller gains. If your PDF was created from a Word document or contains a lot of text, you will likely see meaningful compression.
Need to fax the compressed PDF?
FaxDrop can fax your compressed PDF in under 90 seconds. Just click the "Send as Fax" button after compressing, enter the recipient's fax number, and hit send. Two free faxes per month with no account required. HIPAA-compliant for healthcare and legal use.
Need to fax your PDF?
FaxDrop delivers faxes in under 90 seconds. Free to start. No fax machine needed.
Send a Fax FreeSecurity & Compliance
HIPAA Compliant
Signed BAA on file · No document retention
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End-to-end TLS 1.2+ encryption in transit
Zero Retention
Files deleted immediately after transmission completes