Compress PDF File
Reduce PDF file size by removing redundant data. Free, fast, and efficient.
Drag & drop files here, or click to browse
Accepts: PDF
Batch conversion supported — add multiple files at once
Private & Secure
Files never leave your device. All processing happens locally in your browser.
Completely Free
No subscription, no watermarks, no file limits. Free forever.
Batch Conversion
Convert dozens of files at once with individual progress tracking.
Lightning Fast
Powered by your device's hardware. No server round-trips.
Frequently Asked Questions
Are my files uploaded to a server?↓
Most conversions happen entirely in your browser using JavaScript — your files never leave your device. A small number of advanced formats (HEIC, TIFF, ICO output, and AVIF output) are processed by a secure local server on the same machine as this website, used only for the conversion itself. No files, data, or personal information are ever stored or collected. Your privacy and security are our highest priority.
Is this service free?↓
Yes, completely free with no limits, no registration, and no watermarks.
Can I convert multiple files at once?↓
Yes. You can add as many files as you like and they will all be converted in parallel.
What quality are the output images?↓
PDF pages are rendered at 150 DPI by default (high quality). Image conversions are lossless where the format allows.
Is there a file size limit?↓
There is no hard limit set by us, but very large files may be slow since conversion runs in your browser's memory.