Free online Compress PDF: Reduce PDF file size. No software installation, works right in your browser, completely free.
Compress PDF reduces the file size of your PDF while keeping text crisp and images visually clean. It re-encodes embedded images intelligently instead of stripping content, so you can email large documents, upload them to portals with size limits, or store them without eating up disk space.
Shrink a 40MB portfolio or catalog under the 25MB email attachment limit in one pass.
Compress a thesis or grant proposal to fit university and government submission systems with strict caps.
Archive old contracts and reports as smaller PDFs without losing readable quality.
Choose Light for documents that will be printed or reviewed closely, such as thesis drafts or legal contracts. Choose Strong for email attachments or upload portals with strict size limits. Text stays sharp at every level — compression mainly affects embedded images.
If a PDF contains mostly text and vector graphics with no images, there is little to compress. The tool will tell you when the file is already at its optimal size.
No. Text content is preserved perfectly — compression only re-encodes the embedded images, so searchable text and layout stay intact.
Completely free. All tools on this site are free to use — no sign-up and no usage limits. Ads shown on the site help cover server and development costs.
Yes. Files are processed entirely in your browser and never uploaded to any server. Data is cleared when you close the page.
No. Output files contain no watermark and stay consistent with the original.