Compress PDF Files Online for Free

Reduce PDF file size instantly without losing quality. No signup, no watermark.

Drag & drop your PDF here, or browse to upload

Max file size: 256 MB • Compressed files expire after 5 minutes

How to Compress Your PDF in 3 Simple Steps

  1. Upload Your PDF: Drag and drop your file into the upload box, or click to browse and select it from your computer.
  2. Wait for Processing: Our engine will automatically compress your file. This usually takes just a few seconds.
  3. Download Your File: Click the download link to save your newly compressed, smaller PDF. The link is valid for 5 minutes.


Frequently Asked Questions

How does PDF Compression work?

Our compressor scans the PDF for duplicated fonts and images, removes hidden metadata, and down-samples pictures to a web-friendly resolution — all while keeping the visible layout intact.

Does TinyPDF put a watermark on the compressed PDF files?

No. The compressed file you download is clean and watermark-free, so your documents stay professional.

Why does the compressed file look a little different?

Images may be re-encoded to reduce size, which can slightly change colors or sharpness. If fidelity is critical, try a higher-quality setting or keep a copy of the original.

What happens to my files after upload?

Your upload is securely stored while it is processed and may be retained for internal research and development to improve our compression mechanism. The compressed files are purged automatically within 5 minutes of generation. Your files never leave our servers and are never shared.

My download has expired? What do I do now?

For your safety and privacy, compressed file links are only valid for 5 minutes after processing.

It says that an error occurred. What now?

Sometimes a PDF can’t be compressed because it’s password-protected, corrupted, or saved in an uncommon format that our engine doesn’t recognize. Large scanned documents with zero text layers can also fail. First, make sure the file opens normally on your computer, remove any security/passwords, then save a fresh copy (e.g., “Print to PDF”) and try again. If it still won’t compress, drop us a note with the file size and a brief description—our team will take a look.