PDF Compressor
PDF Compressor reduces the size of PDF files online for free — directly in your browser, with no sign-up, no watermark, and no quality loss at smart compression levels. Drop your PDF, pick a target size, and download a smaller version. Great for emailing documents, web uploads, and saving cloud storage.
Drag and drop PDF files here
or click to browse
Compressing...
Compression Complete
No sign-up required. Your files never leave your browser.
How to Compress a PDF Online (3 Easy Steps)
- Upload your file using the area above.
- Adjust any settings or options if necessary.
- Click the process button to start the tool.
- Wait while your file is securely processed.
- Download your resulting file immediately.
Why Compress PDF Files? (And When You Need To)
- 100% Free — No hidden fees or limits.
- Fast Processing — Get your result in seconds.
- Private & Secure — Your files stay on your device.
- Cross-Platform — Works seamlessly on desktop, tablet, and mobile.
PDF Compressor — Frequently Asked Questions
Yes. PDF Compressor is 100% free with no registration required. Process PDFs with no watermark added and no daily limit on file count. There is no paid tier hiding behind a paywall.
Yes. Files are processed entirely in your browser — they never leave your device. Nothing is uploaded to a server, and nothing is stored after you close the tab.
You can upload PDFs up to 100MB. For optimal performance, files under 25MB process fastest in the browser.
Yes. Process PDFs on iPhone, iPad, or Android directly in Safari or Chrome. Upload from your Files app and download the result straight back to your device. The interface adapts to small screens with thumb-friendly buttons and clear file previews.
For text-based PDFs, quality is not visually affected. For image-heavy PDFs, minor quality reduction may occur at higher compression. Toolzspan uses smart compression to balance size and quality.
No — you must remove the password first. Use the Toolzspan Remove Password from PDF tool, then compress the unlocked file.
Results vary by content. Text-only PDFs typically reduce by 20–50%. Image-heavy PDFs can reduce by 60–80%. Scanned PDFs see the largest reductions.
No. All processing happens in your browser. Your file is never uploaded to a server, and nothing is stored or retained after you close the tab.