Compress PDF
— smaller file, same content.
Drop in a PDF. Its embedded images and internal streams are recompressed to shrink the file size, without changing the page count or layout.
Why use Compress PDF?
Scanned and photographed documents often carry much larger images than the page actually needs, which can make a PDF too big to email or slow to upload elsewhere. This tool downsamples and recompresses those images and tightens up the file's internal streams, shrinking the file while keeping every page intact.
Key Features
Fast Conversion
Finishes in seconds, with no manual cleanup required afterward.
Secure Processing
Files are processed and deleted immediately after conversion — nothing is kept in long-term storage.
Free Online Tool
No cost, no hidden tiers, no artificial limits.
No Registration
No account, no email, no login. Upload a file and get your result back immediately.
Instant Download
Your finished file is ready the moment conversion completes — no waiting, no email delivery.
Works Anywhere
Runs entirely in your browser tab, on any device, no software to install.
How It Works
Upload
Drop in your file, or click to browse.
Processing
The file is read and converted automatically.
Review Results
See a short summary of what was found, and anything worth a quick double-check.
Download
Download your finished file, ready to use.
Security & Privacy
Encrypted connection. When served over HTTPS, all data traveling between your browser and the server is encrypted in transit using standard TLS encryption.
Automatic file deletion. Uploaded files are deleted immediately after conversion completes; they are never kept in long-term storage.
No data sharing. Your files and extracted data are never shared with third parties or sold.
Frequently Asked Questions
Will this reduce the quality of my document?
Images are recompressed at a quality level built for normal viewing and printing - most documents look effectively identical, though very close zooming may show some softening.
Will the page count or layout change?
No - every page stays exactly where it is; only the underlying file size shrinks.
What if my PDF is already small?
If there's nothing meaningful left to save, you get back the same file with a note that it's already optimized.
Can I compress multiple PDFs at once?
No - Compress PDF handles one document at a time.
Is my data secure?
Files are processed and deleted immediately after conversion. Nothing is stored long-term.
Is it free?
Yes, there's no cost and no signup required.