🗜️ PDF Compressor Pro
Reduce PDF file size • Metadata stripping • Object compression • 100% private • No upload
Drag & Drop PDF File
or click to browse from computer
Single PDF • No file size limit
Compression Results
0% saved🔥 Need 90%+ compression?
Professional PDF tools like Adobe Acrobat, Ghostscript, or qpdf achieve 70-95% reduction through full image re-encoding. This browser tool provides 10-30% reduction while keeping files 100% private.
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.