Compress PDF
Smaller file, same content, ready to email or upload.
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
Smart Recompression
Embedded images and internal streams are recompressed to cut file size without touching page count or layout.
Quality Built for Real Use
Tuned for normal viewing and printing, not just squeezing bytes at the cost of legibility.
Already-Optimized Detection
If there's nothing meaningful left to shrink, you get the same file back with a note instead of a pointless re-save.
Layout Untouched
Every page stays exactly where it is - only the underlying file size shrinks.
Common Uses for Compress PDF
Compressing a PDF is useful anywhere file size gets in the way of sending, uploading, or storing a document.
Emailing Large Attachments
Shrink a scanned or photo-heavy PDF below an email provider's attachment size limit.
Faster Uploads to Portals and Forms
Reduce file size before uploading to application portals, job sites, or online forms with strict size caps.
Saving Storage Space
Shrink a large archive of scanned documents to take up less space in cloud storage or on a shared drive.
Speeding Up Shared Documents
Make a PDF faster to open and download for anyone you share it with, especially on a slow connection.
Compression works best on scanned or photographed PDFs with large embedded images - a PDF that's mostly text may already be close to its smallest size.
How to Compress a PDF
Upload Your PDF
Select the PDF you want to shrink - scanned documents and photo-heavy files benefit the most.
Images and Streams Recompressed
Embedded images are downsampled and recompressed, and internal file streams are tightened up.
Quality Checked
The result is tuned for normal viewing and printing - if there's nothing meaningful left to save, you get the original back with a note.
Download Your Smaller PDF
Download the compressed file, ready to email, upload, or store.
Tip: results vary by document - a scan-heavy PDF often shrinks dramatically, while a mostly-text PDF may see little change since there's less to recompress.
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.
Which PDFs compress the most?
Scanned or photographed documents with large embedded images typically shrink the most. PDFs that are mostly text have less to recompress and may see only a small reduction.
How much smaller will my file be?
It depends on the document - image-heavy scans often shrink significantly, while text-based PDFs may see a modest reduction since there's less image data to recompress.
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.