Optimize PDF
Compress PDF Online
Compress PDF files online with light, recommended, or strong compression. Reduce document size for uploading and sharing. Free to use, no signup.
How to reduce the size of a PDF
- 1
Upload the PDF you want to compress.
- 2
Choose light, recommended, or strong compression.
- 3
Download the result and review image quality before sharing.
Try compression when a document exceeds an email or upload limit. Results depend on the original file and the processing tools available on the server. Image-heavy PDFs usually offer more room for reduction than files that are already optimized. A specific final size is not guaranteed.
Free to use, with temporary file storage
No account or installation is required. Uploads are limited to 10 MB per file. Your files are used to complete the job and deleted automatically after about one hour. Download links are temporary, so save your result before it expires. Read our privacy policy for details.
Questions about Compress PDF
Can I compress a PDF to exactly 100 KB or 1 MB?
There is no target-size setting or guaranteed output size. Try stronger compression, or remove pages you do not need.
Will compression change image quality?
Stronger compression can reduce image detail. Use light compression when readability and image quality matter most, and inspect the download.