Upload Files
Upload a PDF to compress
How it works
- Renders each page at optimized resolution
- Converts to compressed JPEG images
- Rebuilds PDF with smaller file size
- 100% client-side processing
Compress PDF
Compress PDF documents to make them easier to email, upload, and store. The tool re-renders PDF pages to optimized images, which can significantly reduce size for image-heavy files.
Why Use This Tool
- Offers low, medium, and high compression levels.
- Helpful for scanned PDFs and image-heavy files.
- Runs locally in the browser without sending documents away.
Best For
- Scanned PDFs and image-heavy documents that are too large for upload or email.
- Quick size reduction attempts before sharing a file externally.
What to Check Before Downloading
- Compare the final file size against the original instead of assuming compression helped.
- Open the output and zoom into text or screenshots to confirm readability.
- Keep a copy of the original PDF in case the compressed version is larger or too blurry.
Current Limitations
- This method rebuilds pages as images, so text-heavy or already optimized PDFs can become larger instead of smaller.
- Compression can reduce sharpness, especially at higher settings or on scanned pages with fine detail.
Helpful Guides
Common Questions
Will compressing a PDF reduce quality?
Compression can reduce image quality depending on the level you choose. High compression gives the smallest file size, while low compression keeps more detail.
Which PDFs benefit most from compression?
Scanned documents and PDFs with many images usually shrink the most because they contain large image data.