Compress PDF
Reduce PDF size without losing quality — set a target size in KB and let Compress PDF do the rest, in your browser.
Popular PDF Tools
YOYOPDF provides browser-based tools for common PDF and image tasks. Fast, easy and free.
Powerful Tools to Work with PDFs
YOYOPDF provides browser-based tools for common PDF and image tasks. Fast, easy and free.
Local by Design
Document contents stay on your device while tools process them in the browser; YOYOPDF does not upload your files.
Blazing Fast
Our tools are optimized for speed to save your time and increase productivity.
Works Across Devices
Use YOYOPDF in a modern desktop, tablet or mobile browser. No installation required.
Always Free
All tools are completely free to use. No hidden charges, no sign up needed.
Everything You Need. All in One Place.
Use YOYOPDF for common PDF and image tasks while keeping document processing on your own device.
Explore YOYOPDF Tools
View all tools →Why use Compress PDF?
Compression matters whenever a file's size, not its content, is the problem.
Email attachment limits
Most inboxes cap attachments around 20–25MB. A scanned PDF over that limit needs to shrink before it can be sent at all.
Government and portal uploads
Application portals and government forms frequently cap file size — sometimes as low as 1–2MB per document.
Storage add up fast
A folder of full-resolution scans can quietly use up far more space than the same documents compressed to a reasonable target.
How it works
Upload
Add the PDF you want to shrink. Nothing is sent anywhere at this step.
Set a target size
Enter the exact KB size you need to hit — for an email limit, a form upload cap, or just general storage saving.
Compress
Images and content are re-encoded locally toward your target, entirely in your browser.
Download
Save the smaller file. Your original PDF is untouched.
Key features
Exact KB target
Choose the size you need to hit instead of a vague 'high/medium/low' setting.
Runs in your browser
Compression happens locally — nothing is uploaded to a server.
No sign-up
Open the tool and start compressing — no account, no email, no waiting.
Works on any device
Set a KB target from a laptop, tablet, or phone — the slider works the same everywhere.
No file limit
Compress as many files as you need, one after another, at no charge.
Free
Compress as many files as you need — no watermark, no per-file fee.
Who uses Compress PDF?
Email attachments
Shrink a scanned document below your email provider's attachment size limit.
Government uploads
Meet strict file-size caps on government and institutional application portals.
Online forms
Fit a supporting document under a web form's upload limit without cutting content.
Storage saving
Reduce the space a large archive of scanned PDFs takes up on disk or cloud storage.
Job applications
Keep a resume and portfolio PDF under the size caps some application systems enforce.
Sharing on mobile
Make a large PDF small enough to send smoothly over a mobile data connection.
Frequently asked questions
Can I choose exactly how small the file becomes?
Yes, set a target file size in KB and Compress PDF works toward that size.
Does compression reduce image quality?
Images are re-encoded to hit the target size, so very aggressive targets can visibly reduce image quality.
Is there a file size limit for compressing?
No hard limit is enforced, though very large files depend on your browser's available memory.