PDF Compressor — Compress PDF to 200KB
Compress PDF files and shrink large documents down to an emailable size.
Drag and drop a PDF, or click to browse
Up to 100 MB — the file is never uploaded
How to Use PDF Compressor
Drop a PDF onto the upload area or click to browse — files up to 100 MB are supported. Once loaded, the PDF Compressor shows the document name and its current size, then offers three compression levels: High quality keeps pages crisp for printing, Balanced is the sweet spot for email and web uploads, and Smallest file pushes the size down hardest when you have a strict attachment limit to hit. Pick a level and click compress. The tool renders each page, re-encodes it at the chosen quality, and rebuilds the document at its original page dimensions, showing progress as it works through the pages. When it finishes you see the new file size and the percentage saved, and a download button gives you the compressed copy. If the result is still too large, switch to a stronger level and run it again — the original file is untouched, so you can experiment freely. All of this happens locally, letting you compress PDF online free of charge with nothing uploaded: the document is read into memory in your browser, processed there, and discarded when you leave the page.
Why Use Our PDF Compressor?
Email systems reject attachments over 10 or 25 MB, government and university portals often cap uploads at 2 MB, and a scanned document can easily be ten times that. Being able to reduce PDF size on the spot turns a blocked submission into a finished one. Because every page is re-encoded as an optimised image, the savings are largest exactly where people struggle most — scans, photographed documents, and slide decks full of screenshots, which routinely drop by 60 to 90 percent. There is no page limit, no daily quota, and no watermark on the output, which is unusual among free compressors. It is also the private option: your file is never uploaded, so payslips, tax returns, and signed agreements stay on your own machine instead of passing through a stranger's server. The three presets mean you do not need to understand DPI or JPEG quality settings to get a sensible result — pick one, look at the number, and adjust if you need to.
Frequently Asked Questions
Is the PDF Compressor free to use?
Yes. The PDF Compressor is completely free with no usage limits, no signup, and no hidden fees.
Do I need to create an account?
No account or signup is required. Just open the tool and start using it immediately.
Is my data safe when using this tool?
Yes. All processing happens directly in your browser, so your data is never uploaded to a server or stored anywhere.
Does the PDF Compressor work on mobile devices?
Yes, the tool is fully responsive and works on any modern browser, including mobile phones and tablets.
How does compress pdf online free work?
Drop a PDF onto the upload area or click to browse — files up to 100 MB are supported. Once loaded, the PDF Compressor shows the document name and its current size, then offers three compression levels: High quality keeps pages crisp for printing, Balanced is the sweet spot for email and web uploads, and Smallest file pushes the size down hardest when you have a strict attachment limit to hit. Everything runs directly in your browser, so compress pdf online free takes only a few seconds.
What about reduce pdf size?
Email systems reject attachments over 10 or 25 MB, government and university portals often cap uploads at 2 MB, and a scanned document can easily be ten times that. That covers reduce pdf size too — the same tool handles it with no extra steps, settings, or downloads.