Compress PDF
Reduce PDF file sizes locally. Choose Standard mode to preserve text, or Extreme mode to hit strict KB limits.
How to use Compress PDF
- 1
Upload your PDF
Select or drag-and-drop the PDF file you want to compress. The original size is displayed instantly.
- 2
Choose a Mode
Select 'Standard' to preserve text quality, or 'Extreme' to hit a strict target file size by flattening the document.
- 3
Compress & Download
Set your desired compression level or target size and click Compress. The optimized PDF is generated instantly in your browser.
Frequently asked questions
How do I compress a PDF file online?
Upload your file, select a compression level (Low, Medium, or High), and click 'Compress PDF' to reduce its size.
What compression presets are available in this tool?
We offer three presets: Low (High Quality), Medium (Good Quality), and High (Maximum Compression).
How does the Low compression preset work?
Low compression applies minimal optimization, keeping image quality very high while slightly reducing file size.
What does the High compression preset do?
High compression aggressively scales down images and assets, resulting in a very small file size suitable for email or web uploads.
Will text remain sharp and readable after compression?
Yes, text and vector graphics are preserved perfectly; only embedded images are compressed.
Can I compress scanned PDF documents?
Yes, scanned PDFs, which consist mostly of images, see the most significant file size reductions.
Is this online PDF compression tool completely free?
Yes, it is 100% free with no limits on file processing.
Can I reduce PDF file sizes to meet email attachment limits?
Absolutely, using the Medium or High preset will usually shrink files enough to bypass strict email size limits.
How much file size reduction can I expect?
Reductions range from 20% to over 80% depending on how many images the PDF contains.
Are my PDF files uploaded to an external server?
No, all compression happens securely within your browser's local memory.
Does compression remove embedded links or bookmarks?
No, links, bookmarks, and structural metadata are preserved during compression.
Can I compress password-secured PDF documents?
You must first remove the password using our Unlock PDF tool.
Does the tool support compressing multi-page PDFs?
Yes, multi-page PDFs are fully supported.
Will compressing a PDF add watermarks to my document?
No, your document will be completely watermark-free.
Can I view the output file size before downloading?
Yes, the tool displays the new file size and the percentage saved before you download.
How long does it take to compress a PDF file?
Processing typically takes only a few seconds, depending on the file size and your device speed.
Is any software installation required to use the compressor?
No, you only need a modern web browser.
Can I run this tool on macOS Safari and iOS?
Yes, DocuVerse is fully compatible with Apple devices and Safari.
Will page orientation change after file compression?
No, the layout and orientation of your pages remain identical.
Can I compress the same PDF document multiple times?
Yes, but repeated compression yields diminishing returns and may overly degrade image quality.