Why is lossless mode the default?
It avoids quality surprises by optimizing structure without re-encoding pages as images.
Reduce · Compress PDF
Compress PDF files with lossless optimization
Make a bulky PDF easier to send without shipping a compressor to your customer’s browser.
- Lossless default
- Optional stronger compression
- Free tier limits apply
Smaller PDF
Secure processing, simple download.
You upload from this page (or paste input for instant tools). Utiline processes your request in the cloud and gives you a link to download the result—nothing heavy runs in your browser.
When to use Compress PDF
Built for everyday file work.
- Shrink intake forms
- Prepare email-safe attachments
- Normalize generated PDFs
Free tools default to lossless mode. Aggressive mode is exposed only when the backend capability is approved.
Run online
Run Compress PDF
Choose your files (or enter a URL when the tool allows it), then start the job. Utiline uploads securely, processes in the cloud, and shows progress here until your download is ready.
Drag and drop files here, or use the file picker below.
Download links expire after a limited time. Save your output promptly — see data retention (draft).
0 selected1 KB total8 MB per fileQueue: low
FAQ
Compress PDF questions
Can I choose high priority for compression?
No. Free sessions use the standard processing queue; priority lanes are reserved for paid automation.