M
1d agoMerge PDF
PDF · 3 files
Compress PDF Online Free
Reduce PDF file size
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How to use Compress PDF?
- Click “Select file” (or drag & drop) to add your file.
- Adjust settings if needed.
- Process and download the result.
FAQs
No. PaperStack tools run in your browser and process files locally on your device.
Yes. PaperStack tools are free to use and don’t require sign-up.
Yes. Processing runs locally in your browser on your device; files are not uploaded to PaperStack for processing or stored on our servers.
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Built for every tool
Why use PaperStack?
The same benefits apply to every tool—including Compress PDF.
Secure & private
Your files are processed in your browser on your device—not sent to our servers for processing or kept on our systems. Sensitive documents stay under your control.
100% free
No hidden fees, no premium tiers, and no usage limits. Use PaperStack for personal or business work—no account required.
Fast processing
Tasks run locally in your browser so you get results quickly—often in seconds—without waiting on a remote queue, even for larger files your device can handle.
Works everywhere
No software to install. Open PaperStack in any modern browser on Windows, Mac, Linux, iOS, or Android and use the tools you need.
PDF Tools
Other tools
Same privacy-first workflow — every tool runs in your browser.
PDF Editor
Edit PDFs: text, highlight, draw, sign, and manage pages
Merge PDF
Combine multiple PDFs into one
Split PDF
Split PDF into separate pages
JPG to PDF
Convert images to PDF
IMG to PDF
Convert images to PDF
PNG to PDF
Convert PNG to PDF
WORD to PDF
Convert Word to PDF
Dummy PDF
Download or generate dummy PDF files by page count or exact size.
Remove pages
Select and remove the PDF pages you don't need.
Extract pages
Keep only the pages you choose in a new PDF.
Extract images
Pull embedded images out of a PDF.
Organize PDF
Sort, add and delete PDF pages.
Reverse PDF
Flip the order of all pages.
Insert Blank Page
Use Insert Blank Page
HTML to PDF
Use HTML to PDF
PDF to JPG
Each page as JPEG
PDF to PNG
Each page as PNG
PDF to images
Choose JPG, PNG, or WebP
Extract Text
Use Extract Text
Rotate PDF
Use Rotate PDF
Add page numbers
Use Add page numbers
Add watermark
Use Add watermark
Crop PDF
Use Crop PDF
Unlock PDF
Remove password protection from PDFs.
Protect PDF
Add a password to your PDF to prevent unauthorized access.
Compare PDF
Use Compare PDF
Privacy-first
Safe in our hands
PaperStack takes security very seriously. Remember that your files stay on your device—processing runs in your browser, and we don’t store your documents on our servers.
No cloud uploads
Your document never leaves this device for processing.
Browser-only processing
Merge, convert, and compress run locally in your tab.
Nothing stored on our servers
We don’t keep copies of your files after you close the page.
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