Compress PDF Online
Reduce PDF file size while maintaining readability. Choose between visual downsampling for scanned documents or structural stream optimization. 100% private in your browser.
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Frequently Asked Questions
How do I compress a PDF file for government exam portals (SSC, UPSC, State PSC)?
Upload your PDF document, select "Visual & Image Compression" with the "Recommended" (120 DPI) or "High Compression" (96 DPI) preset, and click "Compress & Optimize PDF". This significantly downsamples image streams and scanned paperwork so it meets the strict 500KB or 1MB upload thresholds on official recruitment portals.
Does compressing a PDF guarantee a smaller file size?
Not always. If your PDF is already composed of clean vector text, subset fonts, or heavily compressed JPEG images, further compression may produce negligible reduction or even a slight increase in header metadata. SizeSnap provides honest before/after metrics so you can verify the exact file size before downloading.
What is the difference between "Visual & Image Compression" and "Structural Stream Optimizer"?
Structural Stream Optimizer strips redundant metadata and reorganizes cross-reference tables while keeping selectable text, fonts, and vector paths untouched. Visual & Image Compression renders each page to an optimized raster image, which achieves huge file reductions on scanned paperwork, photographs, and certificates, but flattens selectable text.
Are my confidential documents, bank statements, or certificates safe?
Yes, 100%. All PDF decoding, stream compression, and rendering are executed strictly inside your local web browser. Your confidential files never touch an external cloud server.
Can I compress password-protected or encrypted PDF documents?
Encrypted PDFs must be unlocked before compression because browser security sandboxes cannot parse password-protected stream objects without valid credentials.