Compress PDF Online Free
Reduce the file size of your PDF while maintaining optimal visual quality. 100% client-side privacy.
or drag and drop it here
How to Compress a PDF
Step 1: Upload your PDF
Drag and drop your PDF into the upload area, or click to browse for a file. Supports any PDF document, regardless of size.
Step 2: Choose a compression level
Select your preferred compression preset. "Recommended" gives the best balance. "Extreme" shrinks the file most aggressively. "Low" compresses lightly for the best visual quality.
Step 3: Download compressed file
Click "Compress PDF" and your reduced-size PDF will be downloaded automatically. The entire process runs in your browser โ nothing is uploaded.
What would you like to do next?
After compressing your PDF, explore these complementary tools:
Frequently Asked Questions
How much can I compress a PDF?
Compression results vary. PDFs with many images can be reduced by 50โ80%. Text-heavy PDFs (already optimized) may see smaller reductions of 5โ20%.
Will compression reduce the visual quality?
The "Recommended" preset is optimized to be visually indistinguishable at normal viewing sizes. "Extreme" may show slight quality reduction on high-resolution image pages.
Is there a file size limit?
There's no strict limit โ processing is done in your browser's memory. Very large PDFs (100MB+) may be slow on lower-end devices, but will still work.