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🗜️ PDF Compressor Pro

Reduce PDF file size • Metadata stripping • Object compression • 100% private • No upload

Metadata Removal Object Streams 10-30% Reduction 100% Private
⚠️ Technical Note: Pure browser-based compression cannot match desktop software (Ghostscript) which achieves 90%+ reduction [citation:8]. This tool performs metadata stripping, object stream compression, and font deduplication — typically 10-30% size reduction. For maximum compression, use dedicated desktop tools. Files stay 100% private on your device.

Drag & Drop PDF File

or click to browse from computer

Single PDF • No file size limit

✓ Files never leave your device • ✓ No registration • ✓ Free forever

Frequently Asked Questions

🔒 Is my PDF secure?

100% secure. Your PDF never leaves your device. All compression happens locally in your browser. No files are ever uploaded to any server [citation:1][citation:5].

📉 Why only 10-30% reduction?

Browser JavaScript cannot re-encode images or apply full compression algorithms like Ghostscript or Adobe Acrobat. This tool strips metadata, removes duplicates, and compresses object streams — the maximum possible without server-side processing [citation:8].

⚙️ What actually gets compressed?

✓ Document metadata (author, title, producer) • ✓ Duplicate fonts • ✓ Redundant objects • ✓ Object stream compression (PDF 1.5+) • ❌ Images are NOT re-encoded (browser limitation) [citation:4][citation:7].

💰 Is this really free?

Completely free forever. No watermarks, no registration, no hidden costs, no daily limits. Just a professional tool that respects your privacy [citation:3][citation:5].

📱 Does it work on mobile?

Yes! Fully responsive and works on iPhone, iPad, Android, and all modern mobile devices. The interface adapts to your screen size [citation:5].

🚀 How do I get 90% compression?

Use Ghostscript (free), Adobe Acrobat Pro, or Smallpdf (paid). These tools re-encode images. Our tool prioritizes privacy and convenience over maximum compression [citation:8].

🧩 Does quality degrade?

Since we do not re-encode images, visual quality remains identical. Only metadata and redundant data are removed. The document looks exactly the same [citation:1].

📊 What's the file size limit?

No artificial limits. Since processing is client-side, only your device's memory (RAM) matters. For very large files (500MB+), desktop software is recommended.