Compress PDF (Free, Private, No Upload)
Large PDFs can be difficult to email or upload. This compressor reduces file size directly in your browser while keeping readability. It optimizes images and removes unnecessary data without sending your document anywhere. Drag in a PDF, choose a compression level, and get a smaller file instantly. Because processing is local, private reports and scanned IDs stay on your device. It's helpful when submitting online forms, archiving large scans, or sharing documents over limited connections. The tool avoids watermarks and doesn't alter text content. Results depend on images and fonts in the original; huge high-resolution scans will shrink more than text-only files. You can experiment with different levels to balance size and quality. There's no limit beyond your device's memory, so you can compress multiple files in succession. It's a quick way to slim down PDFs without relying on slow server-side services.
- Click Choose PDF and open your file.
- Select a compression level.
- Press Compress to download the smaller PDF.
Related tools: Merge PDF, Split PDF, PDF to Word
FAQ
Is it private?
Yes—everything runs in your browser; files aren’t uploaded.
Will text remain searchable?
Yes, compression preserves text layers so you can still search and copy.
How much can it shrink a PDF?
Size reduction depends on images and fonts; scans shrink more than text-only files.
Does compression reduce quality?
Images are resampled to smaller sizes; choose a higher quality level if needed.
Can I compress multiple PDFs?
You can process files one at a time without any limit.